eventespresso / event-espresso-core

core/db_classes/EE_Datetime.class.php

Doc Comments +3 added lines, -3 removed lines

@@ -615,7 +615,7 @@ 
      * @param string $dt_frmt     string representation of date format defaults to WP settings
      * @param string $conjunction conjunction junction what's your function ?
      *                            this string joins the start date with the end date ie: Jan 01 "to" Dec 31
-     * @return mixed              string on success, FALSE on fail
+     * @return string              string on success, FALSE on fail
      * @throws ReflectionException
      * @throws InvalidArgumentException
      * @throws InvalidInterfaceException
@@ -723,7 +723,7 @@ 
      * @param string $tm_format   string representation of time format defaults to 'g:i a'
      * @param string $conjunction conjunction junction what's your function ?
      *                            this string joins the start date with the end date ie: Jan 01 "to" Dec 31
-     * @return mixed              string on success, FALSE on fail
+     * @return string              string on success, FALSE on fail
      * @throws ReflectionException
      * @throws InvalidArgumentException
      * @throws InvalidInterfaceException
@@ -1077,7 +1077,7 @@ 
      * before any were sold
      *
      * @param array $query_params @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
-     * @return int
+     * @return double
      * @throws ReflectionException
      * @throws InvalidArgumentException
      * @throws InvalidInterfaceException

Indentation +1404 added lines, -1404 removed lines

@@ -13,1412 +13,1412 @@
 class EE_Datetime extends EE_Soft_Delete_Base_Class
 {
 
-    /**
-     * constant used by get_active_status, indicates datetime has no more available spaces
-     */
-    const sold_out = 'DTS';
-
-    /**
-     * constant used by get_active_status, indicating datetime is still active (even is not over, can be registered-for)
-     */
-    const active = 'DTA';
-
-    /**
-     * constant used by get_active_status, indicating the datetime cannot be used for registrations yet, but has not
-     * expired
-     */
-    const upcoming = 'DTU';
-
-    /**
-     * Datetime is postponed
-     */
-    const postponed = 'DTP';
-
-    /**
-     * Datetime is cancelled
-     */
-    const cancelled = 'DTC';
-
-    /**
-     * constant used by get_active_status, indicates datetime has expired (event is over)
-     */
-    const expired = 'DTE';
-
-    /**
-     * constant used in various places indicating that an event is INACTIVE (not yet ready to be published)
-     */
-    const inactive = 'DTI';
-
-
-    /**
-     * @param array  $props_n_values    incoming values
-     * @param string $timezone          incoming timezone (if not set the timezone set for the website will be used.)
-     * @param array  $date_formats      incoming date_formats in an array where the first value is the date_format
-     *                                  and the second value is the time format
-     * @return EE_Datetime
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public static function new_instance($props_n_values = array(), $timezone = '', $date_formats = array())
-    {
-        $has_object = parent::_check_for_object(
-            $props_n_values,
-            __CLASS__,
-            $timezone,
-            $date_formats
-        );
-        return $has_object
-            ? $has_object
-            : new self($props_n_values, false, $timezone, $date_formats);
-    }
-
-
-    /**
-     * @param array  $props_n_values  incoming values from the database
-     * @param string $timezone        incoming timezone as set by the model.  If not set the timezone for
-     *                                the website will be used.
-     * @return EE_Datetime
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public static function new_instance_from_db($props_n_values = array(), $timezone = '')
-    {
-        return new self($props_n_values, true, $timezone);
-    }
-
-
-    /**
-     * @param $name
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function set_name($name)
-    {
-        $this->set('DTT_name', $name);
-    }
-
-
-    /**
-     * @param $description
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function set_description($description)
-    {
-        $this->set('DTT_description', $description);
-    }
-
-
-    /**
-     * Set event start date
-     * set the start date for an event
-     *
-     * @param string $date a string representation of the event's date ex:  Dec. 25, 2025 or 12-25-2025
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function set_start_date($date)
-    {
-        $this->_set_date_for($date, 'DTT_EVT_start');
-    }
-
-
-    /**
-     * Set event start time
-     * set the start time for an event
-     *
-     * @param string $time a string representation of the event time ex:  9am  or  7:30 PM
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function set_start_time($time)
-    {
-        $this->_set_time_for($time, 'DTT_EVT_start');
-    }
-
-
-    /**
-     * Set event end date
-     * set the end date for an event
-     *
-     * @param string $date a string representation of the event's date ex:  Dec. 25, 2025 or 12-25-2025
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function set_end_date($date)
-    {
-        $this->_set_date_for($date, 'DTT_EVT_end');
-    }
-
-
-    /**
-     * Set event end time
-     * set the end time for an event
-     *
-     * @param string $time a string representation of the event time ex:  9am  or  7:30 PM
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function set_end_time($time)
-    {
-        $this->_set_time_for($time, 'DTT_EVT_end');
-    }
-
-
-    /**
-     * Set registration limit
-     * set the maximum number of attendees that can be registered for this datetime slot
-     *
-     * @param int $reg_limit
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function set_reg_limit($reg_limit)
-    {
-        $this->set('DTT_reg_limit', $reg_limit);
-    }
-
-
-    /**
-     * get the number of tickets sold for this datetime slot
-     *
-     * @return mixed int on success, FALSE on fail
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function sold()
-    {
-        return $this->get_raw('DTT_sold');
-    }
-
-
-    /**
-     * @param int $sold
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function set_sold($sold)
-    {
-        // sold can not go below zero
-        $sold = max(0, $sold);
-        $this->set('DTT_sold', $sold);
-    }
-
-
-    /**
-     * Increments sold by amount passed by $qty, and persists it immediately to the database.
-     * Simultaneously decreases the reserved count, unless $also_decrease_reserved is false.
-     *
-     * @param int $qty
-     * @param boolean $also_decrease_reserved
-     * @return boolean indicating success
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function increaseSold($qty = 1, $also_decrease_reserved = true)
-    {
-        $qty = absint($qty);
-        if ($also_decrease_reserved) {
-            $success = $this->adjustNumericFieldsInDb(
-                [
-                    'DTT_reserved' => $qty * -1,
-                    'DTT_sold' => $qty
-                ]
-            );
-        } else {
-            $success = $this->adjustNumericFieldsInDb(
-                [
-                    'DTT_sold' => $qty
-                ]
-            );
-        }
-
-        do_action(
-            'AHEE__EE_Datetime__increase_sold',
-            $this,
-            $qty,
-            $this->sold(),
-            $success
-        );
-        return $success;
-    }
-
-
-    /**
-     * Decrements (subtracts) sold amount passed by $qty directly in the DB and on the model object. (Ie, no need
-     * to save afterwards.)
-     *
-     * @param int $qty
-     * @return boolean indicating success
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function decreaseSold($qty = 1)
-    {
-        $qty = absint($qty);
-        $success = $this->adjustNumericFieldsInDb(
-            [
-                'DTT_sold' => $qty * -1
-            ]
-        );
-        do_action(
-            'AHEE__EE_Datetime__decrease_sold',
-            $this,
-            $qty,
-            $this->sold(),
-            $success
-        );
-        return $success;
-    }
-
-
-    /**
-     * Gets qty of reserved tickets for this datetime
-     *
-     * @return int
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function reserved()
-    {
-        return $this->get_raw('DTT_reserved');
-    }
-
-
-    /**
-     * Sets qty of reserved tickets for this datetime
-     *
-     * @param int $reserved
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function set_reserved($reserved)
-    {
-        // reserved can not go below zero
-        $reserved = max(0, (int) $reserved);
-        $this->set('DTT_reserved', $reserved);
-    }
-
-
-    /**
-     * Increments reserved by amount passed by $qty, and persists it immediately to the database.
-     *
-     * @param int $qty
-     * @return boolean indicating success
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function increaseReserved($qty = 1)
-    {
-        $qty = absint($qty);
-        $success = $this->incrementFieldConditionallyInDb(
-            'DTT_reserved',
-            'DTT_sold',
-            'DTT_reg_limit',
-            $qty
-        );
-        do_action(
-            'AHEE__EE_Datetime__increase_reserved',
-            $this,
-            $qty,
-            $this->reserved(),
-            $success
-        );
-        return $success;
-    }
-
-
-    /**
-     * Decrements (subtracts) reserved by amount passed by $qty, and persists it immediately to the database.
-     *
-     * @param int $qty
-     * @return boolean indicating success
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function decreaseReserved($qty = 1)
-    {
-        $qty = absint($qty);
-        $success = $this->adjustNumericFieldsInDb(
-            [
-                'DTT_reserved' => $qty * -1
-            ]
-        );
-        do_action(
-            'AHEE__EE_Datetime__decrease_reserved',
-            $this,
-            $qty,
-            $this->reserved(),
-            $success
-        );
-        return $success;
-    }
-
-
-    /**
-     * total sold and reserved tickets
-     *
-     * @return int
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function sold_and_reserved()
-    {
-        return $this->sold() + $this->reserved();
-    }
-
-
-    /**
-     * returns the datetime name
-     *
-     * @return string
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function name()
-    {
-        return $this->get('DTT_name');
-    }
-
-
-    /**
-     * returns the datetime description
-     *
-     * @return string
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function description()
-    {
-        return $this->get('DTT_description');
-    }
-
-
-    /**
-     * This helper simply returns whether the event_datetime for the current datetime is a primary datetime
-     *
-     * @return boolean  TRUE if is primary, FALSE if not.
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function is_primary()
-    {
-        return $this->get('DTT_is_primary');
-    }
-
-
-    /**
-     * This helper simply returns the order for the datetime
-     *
-     * @return int  The order of the datetime for this event.
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function order()
-    {
-        return $this->get('DTT_order');
-    }
-
-
-    /**
-     * This helper simply returns the parent id for the datetime
-     *
-     * @return int
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function parent()
-    {
-        return $this->get('DTT_parent');
-    }
-
-
-    /**
-     * show date and/or time
-     *
-     * @param string $date_or_time    whether to display a date or time or both
-     * @param string $start_or_end    whether to display start or end datetimes
-     * @param string $dt_frmt
-     * @param string $tm_frmt
-     * @param bool   $echo            whether we echo or return (note echoing uses "pretty" formats,
-     *                                otherwise we use the standard formats)
-     * @return string|bool  string on success, FALSE on fail
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    private function _show_datetime(
-        $date_or_time = null,
-        $start_or_end = 'start',
-        $dt_frmt = '',
-        $tm_frmt = '',
-        $echo = false
-    ) {
-        $field_name = "DTT_EVT_{$start_or_end}";
-        $dtt = $this->_get_datetime(
-            $field_name,
-            $dt_frmt,
-            $tm_frmt,
-            $date_or_time,
-            $echo
-        );
-        if (! $echo) {
-            return $dtt;
-        }
-        return '';
-    }
-
-
-    /**
-     * get event start date.  Provide either the date format, or NULL to re-use the
-     * last-used format, or '' to use the default date format
-     *
-     * @param string $dt_frmt string representation of date format defaults to 'F j, Y'
-     * @return mixed            string on success, FALSE on fail
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function start_date($dt_frmt = '')
-    {
-        return $this->_show_datetime('D', 'start', $dt_frmt);
-    }
-
-
-    /**
-     * Echoes start_date()
-     *
-     * @param string $dt_frmt
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function e_start_date($dt_frmt = '')
-    {
-        $this->_show_datetime('D', 'start', $dt_frmt, null, true);
-    }
-
-
-    /**
-     * get end date. Provide either the date format, or NULL to re-use the
-     * last-used format, or '' to use the default date format
-     *
-     * @param string $dt_frmt string representation of date format defaults to 'F j, Y'
-     * @return mixed            string on success, FALSE on fail
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function end_date($dt_frmt = '')
-    {
-        return $this->_show_datetime('D', 'end', $dt_frmt);
-    }
-
-
-    /**
-     * Echoes the end date. See end_date()
-     *
-     * @param string $dt_frmt
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function e_end_date($dt_frmt = '')
-    {
-        $this->_show_datetime('D', 'end', $dt_frmt, null, true);
-    }
-
-
-    /**
-     * get date_range - meaning the start AND end date
-     *
-     * @access public
-     * @param string $dt_frmt     string representation of date format defaults to WP settings
-     * @param string $conjunction conjunction junction what's your function ?
-     *                            this string joins the start date with the end date ie: Jan 01 "to" Dec 31
-     * @return mixed              string on success, FALSE on fail
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function date_range($dt_frmt = '', $conjunction = ' - ')
-    {
-        $dt_frmt = ! empty($dt_frmt) ? $dt_frmt : $this->_dt_frmt;
-        $start = str_replace(
-            ' ',
-            ' ',
-            $this->get_i18n_datetime('DTT_EVT_start', $dt_frmt)
-        );
-        $end = str_replace(
-            ' ',
-            ' ',
-            $this->get_i18n_datetime('DTT_EVT_end', $dt_frmt)
-        );
-        return $start !== $end ? $start . $conjunction . $end : $start;
-    }
-
-
-    /**
-     * @param string $dt_frmt
-     * @param string $conjunction
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function e_date_range($dt_frmt = '', $conjunction = ' - ')
-    {
-        echo $this->date_range($dt_frmt, $conjunction);
-    }
-
-
-    /**
-     * get start time
-     *
-     * @param string $tm_format - string representation of time format defaults to 'g:i a'
-     * @return mixed        string on success, FALSE on fail
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function start_time($tm_format = '')
-    {
-        return $this->_show_datetime('T', 'start', null, $tm_format);
-    }
-
-
-    /**
-     * @param string $tm_format
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function e_start_time($tm_format = '')
-    {
-        $this->_show_datetime('T', 'start', null, $tm_format, true);
-    }
-
-
-    /**
-     * get end time
-     *
-     * @param string $tm_format string representation of time format defaults to 'g:i a'
-     * @return mixed                string on success, FALSE on fail
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function end_time($tm_format = '')
-    {
-        return $this->_show_datetime('T', 'end', null, $tm_format);
-    }
-
-
-    /**
-     * @param string $tm_format
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function e_end_time($tm_format = '')
-    {
-        $this->_show_datetime('T', 'end', null, $tm_format, true);
-    }
-
-
-    /**
-     * get time_range
-     *
-     * @access public
-     * @param string $tm_format   string representation of time format defaults to 'g:i a'
-     * @param string $conjunction conjunction junction what's your function ?
-     *                            this string joins the start date with the end date ie: Jan 01 "to" Dec 31
-     * @return mixed              string on success, FALSE on fail
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function time_range($tm_format = '', $conjunction = ' - ')
-    {
-        $tm_format = ! empty($tm_format) ? $tm_format : $this->_tm_frmt;
-        $start = str_replace(
-            ' ',
-            ' ',
-            $this->get_i18n_datetime('DTT_EVT_start', $tm_format)
-        );
-        $end = str_replace(
-            ' ',
-            ' ',
-            $this->get_i18n_datetime('DTT_EVT_end', $tm_format)
-        );
-        return $start !== $end ? $start . $conjunction . $end : $start;
-    }
-
-
-    /**
-     * @param string $tm_format
-     * @param string $conjunction
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function e_time_range($tm_format = '', $conjunction = ' - ')
-    {
-        echo $this->time_range($tm_format, $conjunction);
-    }
-
-
-    /**
-     * This returns a range representation of the date and times.
-     * Output is dependent on the difference (or similarity) between DTT_EVT_start and DTT_EVT_end.
-     * Also, the return value is localized.
-     *
-     * @param string $dt_format
-     * @param string $tm_format
-     * @param string $conjunction used between two different dates or times.
-     *                            ex: Dec 1{$conjunction}}Dec 6, or 2pm{$conjunction}3pm
-     * @param string $separator   used between the date and time formats.
-     *                            ex: Dec 1, 2016{$separator}2pm
-     * @return string
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function date_and_time_range(
-        $dt_format = '',
-        $tm_format = '',
-        $conjunction = ' - ',
-        $separator = ' '
-    ) {
-        $dt_format = ! empty($dt_format) ? $dt_format : $this->_dt_frmt;
-        $tm_format = ! empty($tm_format) ? $tm_format : $this->_tm_frmt;
-        $full_format = $dt_format . $separator . $tm_format;
-        // the range output depends on various conditions
-        switch (true) {
-            // start date timestamp and end date timestamp are the same.
-            case ($this->get_raw('DTT_EVT_start') === $this->get_raw('DTT_EVT_end')):
-                $output = $this->get_i18n_datetime('DTT_EVT_start', $full_format);
-                break;
-            // start and end date are the same but times are different
-            case ($this->start_date() === $this->end_date()):
-                $output = $this->get_i18n_datetime('DTT_EVT_start', $full_format)
-                          . $conjunction
-                          . $this->get_i18n_datetime('DTT_EVT_end', $tm_format);
-                break;
-            // all other conditions
-            default:
-                $output = $this->get_i18n_datetime('DTT_EVT_start', $full_format)
-                          . $conjunction
-                          . $this->get_i18n_datetime('DTT_EVT_end', $full_format);
-                break;
-        }
-        return $output;
-    }
-
-
-    /**
-     * This echos the results of date and time range.
-     *
-     * @see date_and_time_range() for more details on purpose.
-     * @param string $dt_format
-     * @param string $tm_format
-     * @param string $conjunction
-     * @return void
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function e_date_and_time_range($dt_format = '', $tm_format = '', $conjunction = ' - ')
-    {
-        echo $this->date_and_time_range($dt_format, $tm_format, $conjunction);
-    }
-
-
-    /**
-     * get start date and start time
-     *
-     * @param    string $dt_format - string representation of date format defaults to 'F j, Y'
-     * @param    string $tm_format - string representation of time format defaults to 'g:i a'
-     * @return    mixed    string on success, FALSE on fail
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function start_date_and_time($dt_format = '', $tm_format = '')
-    {
-        return $this->_show_datetime('', 'start', $dt_format, $tm_format);
-    }
-
-
-    /**
-     * @param string $dt_frmt
-     * @param string $tm_format
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function e_start_date_and_time($dt_frmt = '', $tm_format = '')
-    {
-        $this->_show_datetime('', 'start', $dt_frmt, $tm_format, true);
-    }
-
-
-    /**
-     * Shows the length of the event (start to end time).
-     * Can be shown in 'seconds','minutes','hours', or 'days'.
-     * By default, rounds up. (So if you use 'days', and then event
-     * only occurs for 1 hour, it will return 1 day).
-     *
-     * @param string $units 'seconds','minutes','hours','days'
-     * @param bool   $round_up
-     * @return float|int|mixed
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function length($units = 'seconds', $round_up = false)
-    {
-        $start = $this->get_raw('DTT_EVT_start');
-        $end = $this->get_raw('DTT_EVT_end');
-        $length_in_units = $end - $start;
-        switch ($units) {
-            // NOTE: We purposefully don't use "break;" in order to chain the divisions
-            /** @noinspection PhpMissingBreakStatementInspection */
-            // phpcs:disable PSR2.ControlStructures.SwitchDeclaration.TerminatingComment
-            case 'days':
-                $length_in_units /= 24;
-            /** @noinspection PhpMissingBreakStatementInspection */
-            case 'hours':
-                // fall through is intentional
-                $length_in_units /= 60;
-            /** @noinspection PhpMissingBreakStatementInspection */
-            case 'minutes':
-                // fall through is intentional
-                $length_in_units /= 60;
-            case 'seconds':
-            default:
-                $length_in_units = ceil($length_in_units);
-        }
-        // phpcs:enable
-        if ($round_up) {
-            $length_in_units = max($length_in_units, 1);
-        }
-        return $length_in_units;
-    }
-
-
-    /**
-     *        get end date and time
-     *
-     * @param string $dt_frmt   - string representation of date format defaults to 'F j, Y'
-     * @param string $tm_format - string representation of time format defaults to 'g:i a'
-     * @return    mixed                string on success, FALSE on fail
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function end_date_and_time($dt_frmt = '', $tm_format = '')
-    {
-        return $this->_show_datetime('', 'end', $dt_frmt, $tm_format);
-    }
-
-
-    /**
-     * @param string $dt_frmt
-     * @param string $tm_format
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function e_end_date_and_time($dt_frmt = '', $tm_format = '')
-    {
-        $this->_show_datetime('', 'end', $dt_frmt, $tm_format, true);
-    }
-
-
-    /**
-     *        get start timestamp
-     *
-     * @return        int
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function start()
-    {
-        return $this->get_raw('DTT_EVT_start');
-    }
-
-
-    /**
-     *        get end timestamp
-     *
-     * @return        int
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function end()
-    {
-        return $this->get_raw('DTT_EVT_end');
-    }
-
-
-    /**
-     *    get the registration limit for this datetime slot
-     *
-     * @return        mixed        int on success, FALSE on fail
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function reg_limit()
-    {
-        return $this->get_raw('DTT_reg_limit');
-    }
-
-
-    /**
-     *    have the tickets sold for this datetime, met or exceed the registration limit ?
-     *
-     * @return        boolean
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function sold_out()
-    {
-        return $this->reg_limit() > 0 && $this->sold() >= $this->reg_limit();
-    }
-
-
-    /**
-     * return the total number of spaces remaining at this venue.
-     * This only takes the venue's capacity into account, NOT the tickets available for sale
-     *
-     * @param bool $consider_tickets Whether to consider tickets remaining when determining if there are any spaces left
-     *                               Because if all tickets attached to this datetime have no spaces left,
-     *                               then this datetime IS effectively sold out.
-     *                               However, there are cases where we just want to know the spaces
-     *                               remaining for this particular datetime, hence the flag.
-     * @return int
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function spaces_remaining($consider_tickets = false)
-    {
-        // tickets remaining available for purchase
-        // no need for special checks for infinite, because if DTT_reg_limit == EE_INF, then EE_INF - x = EE_INF
-        $dtt_remaining = $this->reg_limit() - $this->sold_and_reserved();
-        if (! $consider_tickets) {
-            return $dtt_remaining;
-        }
-        $tickets_remaining = $this->tickets_remaining();
-        return min($dtt_remaining, $tickets_remaining);
-    }
-
-
-    /**
-     * Counts the total tickets available
-     * (from all the different types of tickets which are available for this datetime).
-     *
-     * @param array $query_params @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
-     * @return int
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function tickets_remaining($query_params = array())
-    {
-        $sum = 0;
-        $tickets = $this->tickets($query_params);
-        if (! empty($tickets)) {
-            foreach ($tickets as $ticket) {
-                if ($ticket instanceof EE_Ticket) {
-                    // get the actual amount of tickets that can be sold
-                    $qty = $ticket->qty('saleable');
-                    if ($qty === EE_INF) {
-                        return EE_INF;
-                    }
-                    // no negative ticket quantities plz
-                    if ($qty > 0) {
-                        $sum += $qty;
-                    }
-                }
-            }
-        }
-        return $sum;
-    }
-
-
-    /**
-     * Gets the count of all the tickets available at this datetime (not ticket types)
-     * before any were sold
-     *
-     * @param array $query_params @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
-     * @return int
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function sum_tickets_initially_available($query_params = array())
-    {
-        return $this->sum_related('Ticket', $query_params, 'TKT_qty');
-    }
-
-
-    /**
-     * Returns the lesser-of-the two: spaces remaining at this datetime, or
-     * the total tickets remaining (a sum of the tickets remaining for each ticket type
-     * that is available for this datetime).
-     *
-     * @return int
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function total_tickets_available_at_this_datetime()
-    {
-        return $this->spaces_remaining(true);
-    }
-
-
-    /**
-     * This simply compares the internal dtt for the given string with NOW
-     * and determines if the date is upcoming or not.
-     *
-     * @access public
-     * @return boolean
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function is_upcoming()
-    {
-        return ($this->get_raw('DTT_EVT_start') > time());
-    }
-
-
-    /**
-     * This simply compares the internal datetime for the given string with NOW
-     * and returns if the date is active (i.e. start and end time)
-     *
-     * @return boolean
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function is_active()
-    {
-        return ($this->get_raw('DTT_EVT_start') < time() && $this->get_raw('DTT_EVT_end') > time());
-    }
-
-
-    /**
-     * This simply compares the internal dtt for the given string with NOW
-     * and determines if the date is expired or not.
-     *
-     * @return boolean
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function is_expired()
-    {
-        return ($this->get_raw('DTT_EVT_end') < time());
-    }
-
-
-    /**
-     * This returns the active status for whether an event is active, upcoming, or expired
-     *
-     * @return int return value will be one of the EE_Datetime status constants.
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function get_active_status()
-    {
-        $total_tickets_for_this_dtt = $this->total_tickets_available_at_this_datetime();
-        if ($total_tickets_for_this_dtt !== false && $total_tickets_for_this_dtt < 1) {
-            return EE_Datetime::sold_out;
-        }
-        if ($this->is_expired()) {
-            return EE_Datetime::expired;
-        }
-        if ($this->is_upcoming()) {
-            return EE_Datetime::upcoming;
-        }
-        if ($this->is_active()) {
-            return EE_Datetime::active;
-        }
-        return null;
-    }
-
-
-    /**
-     * This returns a nice display name for the datetime that is contingent on the span between the dates and times.
-     *
-     * @param  boolean $use_dtt_name if TRUE then we'll use DTT->name() if its not empty.
-     * @return string
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function get_dtt_display_name($use_dtt_name = false)
-    {
-        if ($use_dtt_name) {
-            $dtt_name = $this->name();
-            if (! empty($dtt_name)) {
-                return $dtt_name;
-            }
-        }
-        // first condition is to see if the months are different
-        if (
-            date('m', $this->get_raw('DTT_EVT_start')) !== date('m', $this->get_raw('DTT_EVT_end'))
-        ) {
-            $display_date = $this->start_date('M j\, Y g:i a') . ' - ' . $this->end_date('M j\, Y g:i a');
-            // next condition is if its the same month but different day
-        } else {
-            if (
-                date('m', $this->get_raw('DTT_EVT_start')) === date('m', $this->get_raw('DTT_EVT_end'))
-                && date('d', $this->get_raw('DTT_EVT_start')) !== date('d', $this->get_raw('DTT_EVT_end'))
-            ) {
-                $display_date = $this->start_date('M j\, g:i a') . ' - ' . $this->end_date('M j\, g:i a Y');
-            } else {
-                $display_date = $this->start_date('F j\, Y')
-                                . ' @ '
-                                . $this->start_date('g:i a')
-                                . ' - '
-                                . $this->end_date('g:i a');
-            }
-        }
-        return $display_date;
-    }
-
-
-    /**
-     * Gets all the tickets for this datetime
-     *
-     * @param array $query_params @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
-     * @return EE_Base_Class[]|EE_Ticket[]
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function tickets($query_params = array())
-    {
-        return $this->get_many_related('Ticket', $query_params);
-    }
-
-
-    /**
-     * Gets all the ticket types currently available for purchase
-     *
-     * @param array $query_params @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
-     * @return EE_Ticket[]
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function ticket_types_available_for_purchase($query_params = array())
-    {
-        // first check if datetime is valid
-        if ($this->sold_out() || ! ($this->is_upcoming() || $this->is_active())) {
-            return array();
-        }
-        if (empty($query_params)) {
-            $query_params = array(
-                array(
-                    'TKT_start_date' => array('<=', EEM_Ticket::instance()->current_time_for_query('TKT_start_date')),
-                    'TKT_end_date'   => array('>=', EEM_Ticket::instance()->current_time_for_query('TKT_end_date')),
-                    'TKT_deleted'    => false,
-                ),
-            );
-        }
-        return $this->tickets($query_params);
-    }
-
-
-    /**
-     * @return EE_Base_Class|EE_Event
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function event()
-    {
-        return $this->get_first_related('Event');
-    }
-
-
-    /**
-     * Updates the DTT_sold attribute (and saves) based on the number of registrations for this datetime
-     * (via the tickets).
-     *
-     * @return int
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function update_sold()
-    {
-        $count_regs_for_this_datetime = EEM_Registration::instance()->count(
-            array(
-                array(
-                    'STS_ID'                 => EEM_Registration::status_id_approved,
-                    'REG_deleted'            => 0,
-                    'Ticket.Datetime.DTT_ID' => $this->ID(),
-                ),
-            )
-        );
-        $this->set_sold($count_regs_for_this_datetime);
-        $this->save();
-        return $count_regs_for_this_datetime;
-    }
-
-
-    /*******************************************************************
+	/**
+	 * constant used by get_active_status, indicates datetime has no more available spaces
+	 */
+	const sold_out = 'DTS';
+
+	/**
+	 * constant used by get_active_status, indicating datetime is still active (even is not over, can be registered-for)
+	 */
+	const active = 'DTA';
+
+	/**
+	 * constant used by get_active_status, indicating the datetime cannot be used for registrations yet, but has not
+	 * expired
+	 */
+	const upcoming = 'DTU';
+
+	/**
+	 * Datetime is postponed
+	 */
+	const postponed = 'DTP';
+
+	/**
+	 * Datetime is cancelled
+	 */
+	const cancelled = 'DTC';
+
+	/**
+	 * constant used by get_active_status, indicates datetime has expired (event is over)
+	 */
+	const expired = 'DTE';
+
+	/**
+	 * constant used in various places indicating that an event is INACTIVE (not yet ready to be published)
+	 */
+	const inactive = 'DTI';
+
+
+	/**
+	 * @param array  $props_n_values    incoming values
+	 * @param string $timezone          incoming timezone (if not set the timezone set for the website will be used.)
+	 * @param array  $date_formats      incoming date_formats in an array where the first value is the date_format
+	 *                                  and the second value is the time format
+	 * @return EE_Datetime
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public static function new_instance($props_n_values = array(), $timezone = '', $date_formats = array())
+	{
+		$has_object = parent::_check_for_object(
+			$props_n_values,
+			__CLASS__,
+			$timezone,
+			$date_formats
+		);
+		return $has_object
+			? $has_object
+			: new self($props_n_values, false, $timezone, $date_formats);
+	}
+
+
+	/**
+	 * @param array  $props_n_values  incoming values from the database
+	 * @param string $timezone        incoming timezone as set by the model.  If not set the timezone for
+	 *                                the website will be used.
+	 * @return EE_Datetime
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public static function new_instance_from_db($props_n_values = array(), $timezone = '')
+	{
+		return new self($props_n_values, true, $timezone);
+	}
+
+
+	/**
+	 * @param $name
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function set_name($name)
+	{
+		$this->set('DTT_name', $name);
+	}
+
+
+	/**
+	 * @param $description
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function set_description($description)
+	{
+		$this->set('DTT_description', $description);
+	}
+
+
+	/**
+	 * Set event start date
+	 * set the start date for an event
+	 *
+	 * @param string $date a string representation of the event's date ex:  Dec. 25, 2025 or 12-25-2025
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function set_start_date($date)
+	{
+		$this->_set_date_for($date, 'DTT_EVT_start');
+	}
+
+
+	/**
+	 * Set event start time
+	 * set the start time for an event
+	 *
+	 * @param string $time a string representation of the event time ex:  9am  or  7:30 PM
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function set_start_time($time)
+	{
+		$this->_set_time_for($time, 'DTT_EVT_start');
+	}
+
+
+	/**
+	 * Set event end date
+	 * set the end date for an event
+	 *
+	 * @param string $date a string representation of the event's date ex:  Dec. 25, 2025 or 12-25-2025
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function set_end_date($date)
+	{
+		$this->_set_date_for($date, 'DTT_EVT_end');
+	}
+
+
+	/**
+	 * Set event end time
+	 * set the end time for an event
+	 *
+	 * @param string $time a string representation of the event time ex:  9am  or  7:30 PM
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function set_end_time($time)
+	{
+		$this->_set_time_for($time, 'DTT_EVT_end');
+	}
+
+
+	/**
+	 * Set registration limit
+	 * set the maximum number of attendees that can be registered for this datetime slot
+	 *
+	 * @param int $reg_limit
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function set_reg_limit($reg_limit)
+	{
+		$this->set('DTT_reg_limit', $reg_limit);
+	}
+
+
+	/**
+	 * get the number of tickets sold for this datetime slot
+	 *
+	 * @return mixed int on success, FALSE on fail
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function sold()
+	{
+		return $this->get_raw('DTT_sold');
+	}
+
+
+	/**
+	 * @param int $sold
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function set_sold($sold)
+	{
+		// sold can not go below zero
+		$sold = max(0, $sold);
+		$this->set('DTT_sold', $sold);
+	}
+
+
+	/**
+	 * Increments sold by amount passed by $qty, and persists it immediately to the database.
+	 * Simultaneously decreases the reserved count, unless $also_decrease_reserved is false.
+	 *
+	 * @param int $qty
+	 * @param boolean $also_decrease_reserved
+	 * @return boolean indicating success
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function increaseSold($qty = 1, $also_decrease_reserved = true)
+	{
+		$qty = absint($qty);
+		if ($also_decrease_reserved) {
+			$success = $this->adjustNumericFieldsInDb(
+				[
+					'DTT_reserved' => $qty * -1,
+					'DTT_sold' => $qty
+				]
+			);
+		} else {
+			$success = $this->adjustNumericFieldsInDb(
+				[
+					'DTT_sold' => $qty
+				]
+			);
+		}
+
+		do_action(
+			'AHEE__EE_Datetime__increase_sold',
+			$this,
+			$qty,
+			$this->sold(),
+			$success
+		);
+		return $success;
+	}
+
+
+	/**
+	 * Decrements (subtracts) sold amount passed by $qty directly in the DB and on the model object. (Ie, no need
+	 * to save afterwards.)
+	 *
+	 * @param int $qty
+	 * @return boolean indicating success
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function decreaseSold($qty = 1)
+	{
+		$qty = absint($qty);
+		$success = $this->adjustNumericFieldsInDb(
+			[
+				'DTT_sold' => $qty * -1
+			]
+		);
+		do_action(
+			'AHEE__EE_Datetime__decrease_sold',
+			$this,
+			$qty,
+			$this->sold(),
+			$success
+		);
+		return $success;
+	}
+
+
+	/**
+	 * Gets qty of reserved tickets for this datetime
+	 *
+	 * @return int
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function reserved()
+	{
+		return $this->get_raw('DTT_reserved');
+	}
+
+
+	/**
+	 * Sets qty of reserved tickets for this datetime
+	 *
+	 * @param int $reserved
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function set_reserved($reserved)
+	{
+		// reserved can not go below zero
+		$reserved = max(0, (int) $reserved);
+		$this->set('DTT_reserved', $reserved);
+	}
+
+
+	/**
+	 * Increments reserved by amount passed by $qty, and persists it immediately to the database.
+	 *
+	 * @param int $qty
+	 * @return boolean indicating success
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function increaseReserved($qty = 1)
+	{
+		$qty = absint($qty);
+		$success = $this->incrementFieldConditionallyInDb(
+			'DTT_reserved',
+			'DTT_sold',
+			'DTT_reg_limit',
+			$qty
+		);
+		do_action(
+			'AHEE__EE_Datetime__increase_reserved',
+			$this,
+			$qty,
+			$this->reserved(),
+			$success
+		);
+		return $success;
+	}
+
+
+	/**
+	 * Decrements (subtracts) reserved by amount passed by $qty, and persists it immediately to the database.
+	 *
+	 * @param int $qty
+	 * @return boolean indicating success
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function decreaseReserved($qty = 1)
+	{
+		$qty = absint($qty);
+		$success = $this->adjustNumericFieldsInDb(
+			[
+				'DTT_reserved' => $qty * -1
+			]
+		);
+		do_action(
+			'AHEE__EE_Datetime__decrease_reserved',
+			$this,
+			$qty,
+			$this->reserved(),
+			$success
+		);
+		return $success;
+	}
+
+
+	/**
+	 * total sold and reserved tickets
+	 *
+	 * @return int
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function sold_and_reserved()
+	{
+		return $this->sold() + $this->reserved();
+	}
+
+
+	/**
+	 * returns the datetime name
+	 *
+	 * @return string
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function name()
+	{
+		return $this->get('DTT_name');
+	}
+
+
+	/**
+	 * returns the datetime description
+	 *
+	 * @return string
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function description()
+	{
+		return $this->get('DTT_description');
+	}
+
+
+	/**
+	 * This helper simply returns whether the event_datetime for the current datetime is a primary datetime
+	 *
+	 * @return boolean  TRUE if is primary, FALSE if not.
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function is_primary()
+	{
+		return $this->get('DTT_is_primary');
+	}
+
+
+	/**
+	 * This helper simply returns the order for the datetime
+	 *
+	 * @return int  The order of the datetime for this event.
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function order()
+	{
+		return $this->get('DTT_order');
+	}
+
+
+	/**
+	 * This helper simply returns the parent id for the datetime
+	 *
+	 * @return int
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function parent()
+	{
+		return $this->get('DTT_parent');
+	}
+
+
+	/**
+	 * show date and/or time
+	 *
+	 * @param string $date_or_time    whether to display a date or time or both
+	 * @param string $start_or_end    whether to display start or end datetimes
+	 * @param string $dt_frmt
+	 * @param string $tm_frmt
+	 * @param bool   $echo            whether we echo or return (note echoing uses "pretty" formats,
+	 *                                otherwise we use the standard formats)
+	 * @return string|bool  string on success, FALSE on fail
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	private function _show_datetime(
+		$date_or_time = null,
+		$start_or_end = 'start',
+		$dt_frmt = '',
+		$tm_frmt = '',
+		$echo = false
+	) {
+		$field_name = "DTT_EVT_{$start_or_end}";
+		$dtt = $this->_get_datetime(
+			$field_name,
+			$dt_frmt,
+			$tm_frmt,
+			$date_or_time,
+			$echo
+		);
+		if (! $echo) {
+			return $dtt;
+		}
+		return '';
+	}
+
+
+	/**
+	 * get event start date.  Provide either the date format, or NULL to re-use the
+	 * last-used format, or '' to use the default date format
+	 *
+	 * @param string $dt_frmt string representation of date format defaults to 'F j, Y'
+	 * @return mixed            string on success, FALSE on fail
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function start_date($dt_frmt = '')
+	{
+		return $this->_show_datetime('D', 'start', $dt_frmt);
+	}
+
+
+	/**
+	 * Echoes start_date()
+	 *
+	 * @param string $dt_frmt
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function e_start_date($dt_frmt = '')
+	{
+		$this->_show_datetime('D', 'start', $dt_frmt, null, true);
+	}
+
+
+	/**
+	 * get end date. Provide either the date format, or NULL to re-use the
+	 * last-used format, or '' to use the default date format
+	 *
+	 * @param string $dt_frmt string representation of date format defaults to 'F j, Y'
+	 * @return mixed            string on success, FALSE on fail
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function end_date($dt_frmt = '')
+	{
+		return $this->_show_datetime('D', 'end', $dt_frmt);
+	}
+
+
+	/**
+	 * Echoes the end date. See end_date()
+	 *
+	 * @param string $dt_frmt
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function e_end_date($dt_frmt = '')
+	{
+		$this->_show_datetime('D', 'end', $dt_frmt, null, true);
+	}
+
+
+	/**
+	 * get date_range - meaning the start AND end date
+	 *
+	 * @access public
+	 * @param string $dt_frmt     string representation of date format defaults to WP settings
+	 * @param string $conjunction conjunction junction what's your function ?
+	 *                            this string joins the start date with the end date ie: Jan 01 "to" Dec 31
+	 * @return mixed              string on success, FALSE on fail
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function date_range($dt_frmt = '', $conjunction = ' - ')
+	{
+		$dt_frmt = ! empty($dt_frmt) ? $dt_frmt : $this->_dt_frmt;
+		$start = str_replace(
+			' ',
+			'&nbsp;',
+			$this->get_i18n_datetime('DTT_EVT_start', $dt_frmt)
+		);
+		$end = str_replace(
+			' ',
+			'&nbsp;',
+			$this->get_i18n_datetime('DTT_EVT_end', $dt_frmt)
+		);
+		return $start !== $end ? $start . $conjunction . $end : $start;
+	}
+
+
+	/**
+	 * @param string $dt_frmt
+	 * @param string $conjunction
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function e_date_range($dt_frmt = '', $conjunction = ' - ')
+	{
+		echo $this->date_range($dt_frmt, $conjunction);
+	}
+
+
+	/**
+	 * get start time
+	 *
+	 * @param string $tm_format - string representation of time format defaults to 'g:i a'
+	 * @return mixed        string on success, FALSE on fail
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function start_time($tm_format = '')
+	{
+		return $this->_show_datetime('T', 'start', null, $tm_format);
+	}
+
+
+	/**
+	 * @param string $tm_format
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function e_start_time($tm_format = '')
+	{
+		$this->_show_datetime('T', 'start', null, $tm_format, true);
+	}
+
+
+	/**
+	 * get end time
+	 *
+	 * @param string $tm_format string representation of time format defaults to 'g:i a'
+	 * @return mixed                string on success, FALSE on fail
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function end_time($tm_format = '')
+	{
+		return $this->_show_datetime('T', 'end', null, $tm_format);
+	}
+
+
+	/**
+	 * @param string $tm_format
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function e_end_time($tm_format = '')
+	{
+		$this->_show_datetime('T', 'end', null, $tm_format, true);
+	}
+
+
+	/**
+	 * get time_range
+	 *
+	 * @access public
+	 * @param string $tm_format   string representation of time format defaults to 'g:i a'
+	 * @param string $conjunction conjunction junction what's your function ?
+	 *                            this string joins the start date with the end date ie: Jan 01 "to" Dec 31
+	 * @return mixed              string on success, FALSE on fail
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function time_range($tm_format = '', $conjunction = ' - ')
+	{
+		$tm_format = ! empty($tm_format) ? $tm_format : $this->_tm_frmt;
+		$start = str_replace(
+			' ',
+			'&nbsp;',
+			$this->get_i18n_datetime('DTT_EVT_start', $tm_format)
+		);
+		$end = str_replace(
+			' ',
+			'&nbsp;',
+			$this->get_i18n_datetime('DTT_EVT_end', $tm_format)
+		);
+		return $start !== $end ? $start . $conjunction . $end : $start;
+	}
+
+
+	/**
+	 * @param string $tm_format
+	 * @param string $conjunction
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function e_time_range($tm_format = '', $conjunction = ' - ')
+	{
+		echo $this->time_range($tm_format, $conjunction);
+	}
+
+
+	/**
+	 * This returns a range representation of the date and times.
+	 * Output is dependent on the difference (or similarity) between DTT_EVT_start and DTT_EVT_end.
+	 * Also, the return value is localized.
+	 *
+	 * @param string $dt_format
+	 * @param string $tm_format
+	 * @param string $conjunction used between two different dates or times.
+	 *                            ex: Dec 1{$conjunction}}Dec 6, or 2pm{$conjunction}3pm
+	 * @param string $separator   used between the date and time formats.
+	 *                            ex: Dec 1, 2016{$separator}2pm
+	 * @return string
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function date_and_time_range(
+		$dt_format = '',
+		$tm_format = '',
+		$conjunction = ' - ',
+		$separator = ' '
+	) {
+		$dt_format = ! empty($dt_format) ? $dt_format : $this->_dt_frmt;
+		$tm_format = ! empty($tm_format) ? $tm_format : $this->_tm_frmt;
+		$full_format = $dt_format . $separator . $tm_format;
+		// the range output depends on various conditions
+		switch (true) {
+			// start date timestamp and end date timestamp are the same.
+			case ($this->get_raw('DTT_EVT_start') === $this->get_raw('DTT_EVT_end')):
+				$output = $this->get_i18n_datetime('DTT_EVT_start', $full_format);
+				break;
+			// start and end date are the same but times are different
+			case ($this->start_date() === $this->end_date()):
+				$output = $this->get_i18n_datetime('DTT_EVT_start', $full_format)
+						  . $conjunction
+						  . $this->get_i18n_datetime('DTT_EVT_end', $tm_format);
+				break;
+			// all other conditions
+			default:
+				$output = $this->get_i18n_datetime('DTT_EVT_start', $full_format)
+						  . $conjunction
+						  . $this->get_i18n_datetime('DTT_EVT_end', $full_format);
+				break;
+		}
+		return $output;
+	}
+
+
+	/**
+	 * This echos the results of date and time range.
+	 *
+	 * @see date_and_time_range() for more details on purpose.
+	 * @param string $dt_format
+	 * @param string $tm_format
+	 * @param string $conjunction
+	 * @return void
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function e_date_and_time_range($dt_format = '', $tm_format = '', $conjunction = ' - ')
+	{
+		echo $this->date_and_time_range($dt_format, $tm_format, $conjunction);
+	}
+
+
+	/**
+	 * get start date and start time
+	 *
+	 * @param    string $dt_format - string representation of date format defaults to 'F j, Y'
+	 * @param    string $tm_format - string representation of time format defaults to 'g:i a'
+	 * @return    mixed    string on success, FALSE on fail
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function start_date_and_time($dt_format = '', $tm_format = '')
+	{
+		return $this->_show_datetime('', 'start', $dt_format, $tm_format);
+	}
+
+
+	/**
+	 * @param string $dt_frmt
+	 * @param string $tm_format
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function e_start_date_and_time($dt_frmt = '', $tm_format = '')
+	{
+		$this->_show_datetime('', 'start', $dt_frmt, $tm_format, true);
+	}
+
+
+	/**
+	 * Shows the length of the event (start to end time).
+	 * Can be shown in 'seconds','minutes','hours', or 'days'.
+	 * By default, rounds up. (So if you use 'days', and then event
+	 * only occurs for 1 hour, it will return 1 day).
+	 *
+	 * @param string $units 'seconds','minutes','hours','days'
+	 * @param bool   $round_up
+	 * @return float|int|mixed
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function length($units = 'seconds', $round_up = false)
+	{
+		$start = $this->get_raw('DTT_EVT_start');
+		$end = $this->get_raw('DTT_EVT_end');
+		$length_in_units = $end - $start;
+		switch ($units) {
+			// NOTE: We purposefully don't use "break;" in order to chain the divisions
+			/** @noinspection PhpMissingBreakStatementInspection */
+			// phpcs:disable PSR2.ControlStructures.SwitchDeclaration.TerminatingComment
+			case 'days':
+				$length_in_units /= 24;
+			/** @noinspection PhpMissingBreakStatementInspection */
+			case 'hours':
+				// fall through is intentional
+				$length_in_units /= 60;
+			/** @noinspection PhpMissingBreakStatementInspection */
+			case 'minutes':
+				// fall through is intentional
+				$length_in_units /= 60;
+			case 'seconds':
+			default:
+				$length_in_units = ceil($length_in_units);
+		}
+		// phpcs:enable
+		if ($round_up) {
+			$length_in_units = max($length_in_units, 1);
+		}
+		return $length_in_units;
+	}
+
+
+	/**
+	 *        get end date and time
+	 *
+	 * @param string $dt_frmt   - string representation of date format defaults to 'F j, Y'
+	 * @param string $tm_format - string representation of time format defaults to 'g:i a'
+	 * @return    mixed                string on success, FALSE on fail
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function end_date_and_time($dt_frmt = '', $tm_format = '')
+	{
+		return $this->_show_datetime('', 'end', $dt_frmt, $tm_format);
+	}
+
+
+	/**
+	 * @param string $dt_frmt
+	 * @param string $tm_format
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function e_end_date_and_time($dt_frmt = '', $tm_format = '')
+	{
+		$this->_show_datetime('', 'end', $dt_frmt, $tm_format, true);
+	}
+
+
+	/**
+	 *        get start timestamp
+	 *
+	 * @return        int
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function start()
+	{
+		return $this->get_raw('DTT_EVT_start');
+	}
+
+
+	/**
+	 *        get end timestamp
+	 *
+	 * @return        int
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function end()
+	{
+		return $this->get_raw('DTT_EVT_end');
+	}
+
+
+	/**
+	 *    get the registration limit for this datetime slot
+	 *
+	 * @return        mixed        int on success, FALSE on fail
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function reg_limit()
+	{
+		return $this->get_raw('DTT_reg_limit');
+	}
+
+
+	/**
+	 *    have the tickets sold for this datetime, met or exceed the registration limit ?
+	 *
+	 * @return        boolean
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function sold_out()
+	{
+		return $this->reg_limit() > 0 && $this->sold() >= $this->reg_limit();
+	}
+
+
+	/**
+	 * return the total number of spaces remaining at this venue.
+	 * This only takes the venue's capacity into account, NOT the tickets available for sale
+	 *
+	 * @param bool $consider_tickets Whether to consider tickets remaining when determining if there are any spaces left
+	 *                               Because if all tickets attached to this datetime have no spaces left,
+	 *                               then this datetime IS effectively sold out.
+	 *                               However, there are cases where we just want to know the spaces
+	 *                               remaining for this particular datetime, hence the flag.
+	 * @return int
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function spaces_remaining($consider_tickets = false)
+	{
+		// tickets remaining available for purchase
+		// no need for special checks for infinite, because if DTT_reg_limit == EE_INF, then EE_INF - x = EE_INF
+		$dtt_remaining = $this->reg_limit() - $this->sold_and_reserved();
+		if (! $consider_tickets) {
+			return $dtt_remaining;
+		}
+		$tickets_remaining = $this->tickets_remaining();
+		return min($dtt_remaining, $tickets_remaining);
+	}
+
+
+	/**
+	 * Counts the total tickets available
+	 * (from all the different types of tickets which are available for this datetime).
+	 *
+	 * @param array $query_params @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
+	 * @return int
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function tickets_remaining($query_params = array())
+	{
+		$sum = 0;
+		$tickets = $this->tickets($query_params);
+		if (! empty($tickets)) {
+			foreach ($tickets as $ticket) {
+				if ($ticket instanceof EE_Ticket) {
+					// get the actual amount of tickets that can be sold
+					$qty = $ticket->qty('saleable');
+					if ($qty === EE_INF) {
+						return EE_INF;
+					}
+					// no negative ticket quantities plz
+					if ($qty > 0) {
+						$sum += $qty;
+					}
+				}
+			}
+		}
+		return $sum;
+	}
+
+
+	/**
+	 * Gets the count of all the tickets available at this datetime (not ticket types)
+	 * before any were sold
+	 *
+	 * @param array $query_params @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
+	 * @return int
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function sum_tickets_initially_available($query_params = array())
+	{
+		return $this->sum_related('Ticket', $query_params, 'TKT_qty');
+	}
+
+
+	/**
+	 * Returns the lesser-of-the two: spaces remaining at this datetime, or
+	 * the total tickets remaining (a sum of the tickets remaining for each ticket type
+	 * that is available for this datetime).
+	 *
+	 * @return int
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function total_tickets_available_at_this_datetime()
+	{
+		return $this->spaces_remaining(true);
+	}
+
+
+	/**
+	 * This simply compares the internal dtt for the given string with NOW
+	 * and determines if the date is upcoming or not.
+	 *
+	 * @access public
+	 * @return boolean
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function is_upcoming()
+	{
+		return ($this->get_raw('DTT_EVT_start') > time());
+	}
+
+
+	/**
+	 * This simply compares the internal datetime for the given string with NOW
+	 * and returns if the date is active (i.e. start and end time)
+	 *
+	 * @return boolean
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function is_active()
+	{
+		return ($this->get_raw('DTT_EVT_start') < time() && $this->get_raw('DTT_EVT_end') > time());
+	}
+
+
+	/**
+	 * This simply compares the internal dtt for the given string with NOW
+	 * and determines if the date is expired or not.
+	 *
+	 * @return boolean
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function is_expired()
+	{
+		return ($this->get_raw('DTT_EVT_end') < time());
+	}
+
+
+	/**
+	 * This returns the active status for whether an event is active, upcoming, or expired
+	 *
+	 * @return int return value will be one of the EE_Datetime status constants.
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function get_active_status()
+	{
+		$total_tickets_for_this_dtt = $this->total_tickets_available_at_this_datetime();
+		if ($total_tickets_for_this_dtt !== false && $total_tickets_for_this_dtt < 1) {
+			return EE_Datetime::sold_out;
+		}
+		if ($this->is_expired()) {
+			return EE_Datetime::expired;
+		}
+		if ($this->is_upcoming()) {
+			return EE_Datetime::upcoming;
+		}
+		if ($this->is_active()) {
+			return EE_Datetime::active;
+		}
+		return null;
+	}
+
+
+	/**
+	 * This returns a nice display name for the datetime that is contingent on the span between the dates and times.
+	 *
+	 * @param  boolean $use_dtt_name if TRUE then we'll use DTT->name() if its not empty.
+	 * @return string
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function get_dtt_display_name($use_dtt_name = false)
+	{
+		if ($use_dtt_name) {
+			$dtt_name = $this->name();
+			if (! empty($dtt_name)) {
+				return $dtt_name;
+			}
+		}
+		// first condition is to see if the months are different
+		if (
+			date('m', $this->get_raw('DTT_EVT_start')) !== date('m', $this->get_raw('DTT_EVT_end'))
+		) {
+			$display_date = $this->start_date('M j\, Y g:i a') . ' - ' . $this->end_date('M j\, Y g:i a');
+			// next condition is if its the same month but different day
+		} else {
+			if (
+				date('m', $this->get_raw('DTT_EVT_start')) === date('m', $this->get_raw('DTT_EVT_end'))
+				&& date('d', $this->get_raw('DTT_EVT_start')) !== date('d', $this->get_raw('DTT_EVT_end'))
+			) {
+				$display_date = $this->start_date('M j\, g:i a') . ' - ' . $this->end_date('M j\, g:i a Y');
+			} else {
+				$display_date = $this->start_date('F j\, Y')
+								. ' @ '
+								. $this->start_date('g:i a')
+								. ' - '
+								. $this->end_date('g:i a');
+			}
+		}
+		return $display_date;
+	}
+
+
+	/**
+	 * Gets all the tickets for this datetime
+	 *
+	 * @param array $query_params @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
+	 * @return EE_Base_Class[]|EE_Ticket[]
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function tickets($query_params = array())
+	{
+		return $this->get_many_related('Ticket', $query_params);
+	}
+
+
+	/**
+	 * Gets all the ticket types currently available for purchase
+	 *
+	 * @param array $query_params @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
+	 * @return EE_Ticket[]
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function ticket_types_available_for_purchase($query_params = array())
+	{
+		// first check if datetime is valid
+		if ($this->sold_out() || ! ($this->is_upcoming() || $this->is_active())) {
+			return array();
+		}
+		if (empty($query_params)) {
+			$query_params = array(
+				array(
+					'TKT_start_date' => array('<=', EEM_Ticket::instance()->current_time_for_query('TKT_start_date')),
+					'TKT_end_date'   => array('>=', EEM_Ticket::instance()->current_time_for_query('TKT_end_date')),
+					'TKT_deleted'    => false,
+				),
+			);
+		}
+		return $this->tickets($query_params);
+	}
+
+
+	/**
+	 * @return EE_Base_Class|EE_Event
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function event()
+	{
+		return $this->get_first_related('Event');
+	}
+
+
+	/**
+	 * Updates the DTT_sold attribute (and saves) based on the number of registrations for this datetime
+	 * (via the tickets).
+	 *
+	 * @return int
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function update_sold()
+	{
+		$count_regs_for_this_datetime = EEM_Registration::instance()->count(
+			array(
+				array(
+					'STS_ID'                 => EEM_Registration::status_id_approved,
+					'REG_deleted'            => 0,
+					'Ticket.Datetime.DTT_ID' => $this->ID(),
+				),
+			)
+		);
+		$this->set_sold($count_regs_for_this_datetime);
+		$this->save();
+		return $count_regs_for_this_datetime;
+	}
+
+
+	/*******************************************************************
      ***********************  DEPRECATED METHODS  **********************
      *******************************************************************/
 
 
-    /**
-     * Increments sold by amount passed by $qty, and persists it immediately to the database.
-     *
-     * @deprecated 4.9.80.p
-     * @param int $qty
-     * @return boolean
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function increase_sold($qty = 1)
-    {
-        EE_Error::doing_it_wrong(
-            __FUNCTION__,
-            esc_html__('Please use EE_Datetime::increaseSold() instead', 'event_espresso'),
-            '4.9.80.p',
-            '5.0.0.p'
-        );
-        return $this->increaseSold($qty);
-    }
-
-
-    /**
-     * Decrements (subtracts) sold amount passed by $qty directly in the DB and on the model object. (Ie, no need
-     * to save afterwards.)
-     *
-     * @deprecated 4.9.80.p
-     * @param int $qty
-     * @return boolean
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function decrease_sold($qty = 1)
-    {
-        EE_Error::doing_it_wrong(
-            __FUNCTION__,
-            esc_html__('Please use EE_Datetime::decreaseSold() instead', 'event_espresso'),
-            '4.9.80.p',
-            '5.0.0.p'
-        );
-        return $this->decreaseSold($qty);
-    }
-
-
-    /**
-     * Increments reserved by amount passed by $qty, and persists it immediately to the database.
-     *
-     * @deprecated 4.9.80.p
-     * @param int $qty
-     * @return boolean indicating success
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function increase_reserved($qty = 1)
-    {
-        EE_Error::doing_it_wrong(
-            __FUNCTION__,
-            esc_html__('Please use EE_Datetime::increaseReserved() instead', 'event_espresso'),
-            '4.9.80.p',
-            '5.0.0.p'
-        );
-        return $this->increaseReserved($qty);
-    }
-
-
-    /**
-     * Decrements (subtracts) reserved by amount passed by $qty, and persists it immediately to the database.
-     *
-     * @deprecated 4.9.80.p
-     * @param int $qty
-     * @return boolean
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function decrease_reserved($qty = 1)
-    {
-        EE_Error::doing_it_wrong(
-            __FUNCTION__,
-            esc_html__('Please use EE_Datetime::decreaseReserved() instead', 'event_espresso'),
-            '4.9.80.p',
-            '5.0.0.p'
-        );
-        return $this->decreaseReserved($qty);
-    }
+	/**
+	 * Increments sold by amount passed by $qty, and persists it immediately to the database.
+	 *
+	 * @deprecated 4.9.80.p
+	 * @param int $qty
+	 * @return boolean
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function increase_sold($qty = 1)
+	{
+		EE_Error::doing_it_wrong(
+			__FUNCTION__,
+			esc_html__('Please use EE_Datetime::increaseSold() instead', 'event_espresso'),
+			'4.9.80.p',
+			'5.0.0.p'
+		);
+		return $this->increaseSold($qty);
+	}
+
+
+	/**
+	 * Decrements (subtracts) sold amount passed by $qty directly in the DB and on the model object. (Ie, no need
+	 * to save afterwards.)
+	 *
+	 * @deprecated 4.9.80.p
+	 * @param int $qty
+	 * @return boolean
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function decrease_sold($qty = 1)
+	{
+		EE_Error::doing_it_wrong(
+			__FUNCTION__,
+			esc_html__('Please use EE_Datetime::decreaseSold() instead', 'event_espresso'),
+			'4.9.80.p',
+			'5.0.0.p'
+		);
+		return $this->decreaseSold($qty);
+	}
+
+
+	/**
+	 * Increments reserved by amount passed by $qty, and persists it immediately to the database.
+	 *
+	 * @deprecated 4.9.80.p
+	 * @param int $qty
+	 * @return boolean indicating success
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function increase_reserved($qty = 1)
+	{
+		EE_Error::doing_it_wrong(
+			__FUNCTION__,
+			esc_html__('Please use EE_Datetime::increaseReserved() instead', 'event_espresso'),
+			'4.9.80.p',
+			'5.0.0.p'
+		);
+		return $this->increaseReserved($qty);
+	}
+
+
+	/**
+	 * Decrements (subtracts) reserved by amount passed by $qty, and persists it immediately to the database.
+	 *
+	 * @deprecated 4.9.80.p
+	 * @param int $qty
+	 * @return boolean
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function decrease_reserved($qty = 1)
+	{
+		EE_Error::doing_it_wrong(
+			__FUNCTION__,
+			esc_html__('Please use EE_Datetime::decreaseReserved() instead', 'event_espresso'),
+			'4.9.80.p',
+			'5.0.0.p'
+		);
+		return $this->decreaseReserved($qty);
+	}
 }

core/db_classes/EE_Answer.class.php

Doc Comments +1 added lines, -1 removed lines

@@ -64,7 +64,7 @@
     /**
      * Set Answer value
      *
-     * @param mixed $ANS_value
+     * @param string $ANS_value
      * @throws EE_Error
      * @throws ReflectionException
      */

Indentation +149 added lines, -149 removed lines

@@ -10,153 +10,153 @@
 class EE_Answer extends EE_Base_Class
 {
 
-    /**
-     * @param array $props_n_values
-     * @return EE_Answer
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function new_instance($props_n_values = [])
-    {
-        $has_object = parent::_check_for_object($props_n_values, __CLASS__);
-        return $has_object ? $has_object : new self($props_n_values);
-    }
-
-
-    /**
-     * @param array $props_n_values
-     * @return EE_Answer
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function new_instance_from_db($props_n_values = [])
-    {
-        return new self($props_n_values, true);
-    }
-
-
-    /**
-     * Set Question ID
-     *
-     * @param int $QST_ID
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_question($QST_ID = 0)
-    {
-        $this->set('QST_ID', $QST_ID);
-    }
-
-
-    /**
-     * Set Registration ID
-     *
-     * @param int $REG_ID
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_registration($REG_ID = 0)
-    {
-        $this->set('REG_ID', $REG_ID);
-    }
-
-
-    /**
-     * Set Answer value
-     *
-     * @param mixed $ANS_value
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_value($ANS_value = '')
-    {
-        $this->set('ANS_value', $ANS_value);
-    }
-
-
-    /**
-     * get Attendee First Name
-     *
-     * @return        int
-     * @throws EE_Error
-     */
-    public function registration_ID()
-    {
-        return $this->get('REG_ID');
-    }
-
-
-    /**
-     * get Attendee Last Name
-     *
-     * @return        int
-     * @throws EE_Error
-     */
-    public function question_ID()
-    {
-        return $this->get('QST_ID');
-    }
-
-
-    /**
-     * get Attendee Address
-     *
-     * @return        string
-     * @throws EE_Error
-     */
-    public function value()
-    {
-        return $this->get('ANS_value');
-    }
-
-
-    /**
-     * Gets a pretty form of the value (mostly applies to answers that have multiple answers)
-     *
-     * @param null $schema
-     * @return string
-     * @throws EE_Error
-     */
-    public function pretty_value($schema = null)
-    {
-        return $this->get_pretty('ANS_value', $schema);
-    }
-
-
-    /**
-     * Echoes out a pretty value (even for multi-choice options)
-     *
-     * @param string $schema
-     * @throws EE_Error
-     */
-    public function e_value($schema = null)
-    {
-        $this->e('ANS_value', $schema);
-    }
-
-
-    /**
-     * Gets the related EE_Question to this EE_Answer
-     *
-     * @return EE_Base_Class|EE_Question
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function question()
-    {
-        return $this->get_first_related('Question');
-    }
-
-
-    /**
-     * Gets the related EE_Registration to this EE_Answer
-     *
-     * @return EE_Base_Class|EE_Registration
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function registration()
-    {
-        return $this->get_first_related('Registration');
-    }
+	/**
+	 * @param array $props_n_values
+	 * @return EE_Answer
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function new_instance($props_n_values = [])
+	{
+		$has_object = parent::_check_for_object($props_n_values, __CLASS__);
+		return $has_object ? $has_object : new self($props_n_values);
+	}
+
+
+	/**
+	 * @param array $props_n_values
+	 * @return EE_Answer
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function new_instance_from_db($props_n_values = [])
+	{
+		return new self($props_n_values, true);
+	}
+
+
+	/**
+	 * Set Question ID
+	 *
+	 * @param int $QST_ID
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_question($QST_ID = 0)
+	{
+		$this->set('QST_ID', $QST_ID);
+	}
+
+
+	/**
+	 * Set Registration ID
+	 *
+	 * @param int $REG_ID
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_registration($REG_ID = 0)
+	{
+		$this->set('REG_ID', $REG_ID);
+	}
+
+
+	/**
+	 * Set Answer value
+	 *
+	 * @param mixed $ANS_value
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_value($ANS_value = '')
+	{
+		$this->set('ANS_value', $ANS_value);
+	}
+
+
+	/**
+	 * get Attendee First Name
+	 *
+	 * @return        int
+	 * @throws EE_Error
+	 */
+	public function registration_ID()
+	{
+		return $this->get('REG_ID');
+	}
+
+
+	/**
+	 * get Attendee Last Name
+	 *
+	 * @return        int
+	 * @throws EE_Error
+	 */
+	public function question_ID()
+	{
+		return $this->get('QST_ID');
+	}
+
+
+	/**
+	 * get Attendee Address
+	 *
+	 * @return        string
+	 * @throws EE_Error
+	 */
+	public function value()
+	{
+		return $this->get('ANS_value');
+	}
+
+
+	/**
+	 * Gets a pretty form of the value (mostly applies to answers that have multiple answers)
+	 *
+	 * @param null $schema
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function pretty_value($schema = null)
+	{
+		return $this->get_pretty('ANS_value', $schema);
+	}
+
+
+	/**
+	 * Echoes out a pretty value (even for multi-choice options)
+	 *
+	 * @param string $schema
+	 * @throws EE_Error
+	 */
+	public function e_value($schema = null)
+	{
+		$this->e('ANS_value', $schema);
+	}
+
+
+	/**
+	 * Gets the related EE_Question to this EE_Answer
+	 *
+	 * @return EE_Base_Class|EE_Question
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function question()
+	{
+		return $this->get_first_related('Question');
+	}
+
+
+	/**
+	 * Gets the related EE_Registration to this EE_Answer
+	 *
+	 * @return EE_Base_Class|EE_Registration
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function registration()
+	{
+		return $this->get_first_related('Registration');
+	}
 }

core/db_classes/EE_Attendee.class.php

Doc Comments +3 added lines, -3 removed lines

@@ -451,7 +451,7 @@ 
      * Gets registrations of this attendee
      *
      * @param array $query_params
-     * @return array[]|EE_Base_Class[]|EE_Registration[]
+     * @return EE_Base_Class[]
      * @throws EE_Error
      * @throws ReflectionException
      */
@@ -497,7 +497,7 @@ 
     /**
      * returns any events attached to this attendee ($_Event property);
      *
-     * @return array
+     * @return EE_Base_Class[]
      * @throws EE_Error
      * @throws ReflectionException
      */
@@ -523,7 +523,7 @@ 
      * and keys are their cleaned values.
      *
      * @param EE_Payment_Method $payment_method the _gateway_name property on the gateway class
-     * @return EE_Form_Section_Proper|null
+     * @return null|EE_Billing_Info_Form
      * @throws EE_Error
      * @see EE_Attendee::save_and_clean_billing_info_for_payment_method() which was
      *                                          used to save the billing info

Indentation +803 added lines, -803 removed lines

@@ -13,807 +13,807 @@
 class EE_Attendee extends EE_CPT_Base implements EEI_Contact, EEI_Address, EEI_Admin_Links, EEI_Attendee
 {
 
-    /**
-     * Sets some dynamic defaults
-     *
-     * @param array  $fieldValues
-     * @param bool   $bydb
-     * @param string $timezone
-     * @param array  $date_formats
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    protected function __construct($fieldValues = null, $bydb = false, $timezone = '', $date_formats = [])
-    {
-        if (! isset($fieldValues['ATT_full_name'])) {
-            $fname                        = isset($fieldValues['ATT_fname']) ? $fieldValues['ATT_fname'] . ' ' : '';
-            $lname                        = isset($fieldValues['ATT_lname']) ? $fieldValues['ATT_lname'] : '';
-            $fieldValues['ATT_full_name'] = $fname . $lname;
-        }
-        if (! isset($fieldValues['ATT_slug'])) {
-            // $fieldValues['ATT_slug'] = sanitize_key(wp_generate_password(20));
-            $fieldValues['ATT_slug'] = sanitize_title($fieldValues['ATT_full_name']);
-        }
-        if (! isset($fieldValues['ATT_short_bio']) && isset($fieldValues['ATT_bio'])) {
-            $fieldValues['ATT_short_bio'] = substr($fieldValues['ATT_bio'], 0, 50);
-        }
-        parent::__construct($fieldValues, $bydb, $timezone, $date_formats);
-    }
-
-
-    /**
-     * @param array  $props_n_values    incoming values
-     * @param string $timezone          incoming timezone
-     *                                  (if not set the timezone set for the website will be used.)
-     * @param array  $date_formats      incoming date_formats in an array where the first value is the
-     *                                  date_format and the second value is the time format
-     * @return EE_Attendee
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function new_instance($props_n_values = [], $timezone = '', $date_formats = [])
-    {
-        $has_object = parent::_check_for_object($props_n_values, __CLASS__, $timezone, $date_formats);
-        return $has_object ? $has_object : new self($props_n_values, false, $timezone, $date_formats);
-    }
-
-
-    /**
-     * @param array  $props_n_values  incoming values from the database
-     * @param string $timezone        incoming timezone as set by the model.
-     *                                If not set the timezone for the website will be used.
-     * @return EE_Attendee
-     * @throws EE_Error
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function new_instance_from_db($props_n_values = [], $timezone = '')
-    {
-        return new self($props_n_values, true, $timezone);
-    }
-
-
-    /**
-     * Set Attendee First Name
-     *
-     * @param string $fname
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_fname($fname = '')
-    {
-        $this->set('ATT_fname', $fname);
-    }
-
-
-    /**
-     * Set Attendee Last Name
-     *
-     * @param string $lname
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_lname($lname = '')
-    {
-        $this->set('ATT_lname', $lname);
-    }
-
-
-    /**
-     * Set Attendee Address
-     *
-     * @param string $address
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_address($address = '')
-    {
-        $this->set('ATT_address', $address);
-    }
-
-
-    /**
-     * Set Attendee Address2
-     *
-     * @param string $address2
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_address2($address2 = '')
-    {
-        $this->set('ATT_address2', $address2);
-    }
-
-
-    /**
-     * Set Attendee City
-     *
-     * @param string $city
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_city($city = '')
-    {
-        $this->set('ATT_city', $city);
-    }
-
-
-    /**
-     * Set Attendee State ID
-     *
-     * @param int $STA_ID
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_state($STA_ID = 0)
-    {
-        $this->set('STA_ID', $STA_ID);
-    }
-
-
-    /**
-     * Set Attendee Country ISO Code
-     *
-     * @param string $CNT_ISO
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_country($CNT_ISO = '')
-    {
-        $this->set('CNT_ISO', $CNT_ISO);
-    }
-
-
-    /**
-     * Set Attendee Zip/Postal Code
-     *
-     * @param string $zip
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_zip($zip = '')
-    {
-        $this->set('ATT_zip', $zip);
-    }
-
-
-    /**
-     * Set Attendee Email Address
-     *
-     * @param string $email
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_email($email = '')
-    {
-        $this->set('ATT_email', $email);
-    }
-
-
-    /**
-     * Set Attendee Phone
-     *
-     * @param string $phone
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_phone($phone = '')
-    {
-        $this->set('ATT_phone', $phone);
-    }
-
-
-    /**
-     * set deleted
-     *
-     * @param bool $ATT_deleted
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_deleted($ATT_deleted = false)
-    {
-        $this->set('ATT_deleted', $ATT_deleted);
-    }
-
-
-    /**
-     * Returns the value for the post_author id saved with the cpt
-     *
-     * @return int
-     * @throws EE_Error
-     * @since 4.5.0
-     */
-    public function wp_user()
-    {
-        return $this->get('ATT_author');
-    }
-
-
-    /**
-     * echoes out the attendee's first name
-     *
-     * @return void
-     * @throws EE_Error
-     */
-    public function e_full_name()
-    {
-        echo $this->full_name();
-    }
-
-
-    /**
-     * Returns the first and last name concatenated together with a space.
-     *
-     * @param bool $apply_html_entities
-     * @return string
-     * @throws EE_Error
-     */
-    public function full_name($apply_html_entities = false)
-    {
-        $full_name = [
-            $this->fname(),
-            $this->lname(),
-        ];
-        $full_name = array_filter($full_name);
-        $full_name = implode(' ', $full_name);
-        return $apply_html_entities
-            ? htmlentities($full_name, ENT_QUOTES, 'UTF-8')
-            : $full_name;
-    }
-
-
-    /**
-     * get Attendee First Name
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function fname()
-    {
-        return $this->get('ATT_fname');
-    }
-
-
-    /**
-     * get Attendee Last Name
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function lname()
-    {
-        return $this->get('ATT_lname');
-    }
-
-
-    /**
-     * get Attendee Email Address
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function email()
-    {
-        return $this->get('ATT_email');
-    }
-
-
-    /**
-     * get Attendee Phone #
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function phone()
-    {
-        return $this->get('ATT_phone');
-    }
-
-
-    /**
-     * This returns the value of the `ATT_full_name` field
-     * which is usually equivalent to calling `full_name()`
-     * unless the post_title field has been directly modified
-     * in the db for the post (espresso_attendees post type)
-     * for this attendee.
-     *
-     * @param bool $apply_html_entities
-     * @return string
-     * @throws EE_Error
-     */
-    public function ATT_full_name($apply_html_entities = false)
-    {
-        return $apply_html_entities
-            ? htmlentities(
-                $this->get('ATT_full_name'),
-                ENT_QUOTES,
-                'UTF-8'
-            )
-            : $this->get('ATT_full_name');
-    }
-
-
-    /**
-     * get Attendee bio
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function bio()
-    {
-        return $this->get('ATT_bio');
-    }
-
-
-    /**
-     * get Attendee short bio
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function short_bio()
-    {
-        return $this->get('ATT_short_bio');
-    }
-
-
-    /**
-     * Gets the attendee's full address as an array
-     * so client code can decide hwo to display it
-     *
-     * @return array numerically indexed,
-     *               with each part of the address that is known.
-     *               Eg, if the user only responded to state and country,
-     *               it would be array(0=>'Alabama',1=>'USA')
-     * @return array
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function full_address_as_array()
-    {
-        $full_address_array     = [];
-        $initial_address_fields = ['ATT_address', 'ATT_address2', 'ATT_city',];
-        foreach ($initial_address_fields as $address_field_name) {
-            $address_fields_value = $this->get($address_field_name);
-            if (! empty($address_fields_value)) {
-                $full_address_array[] = $address_fields_value;
-            }
-        }
-        // now handle state and country
-        $state_obj = $this->state_obj();
-        if ($state_obj instanceof EE_State) {
-            $full_address_array[] = $state_obj->name();
-        }
-        $country_obj = $this->country_obj();
-        if ($country_obj instanceof EE_Country) {
-            $full_address_array[] = $country_obj->name();
-        }
-        // lastly get the xip
-        $zip_value = $this->zip();
-        if (! empty($zip_value)) {
-            $full_address_array[] = $zip_value;
-        }
-        return $full_address_array;
-    }
-
-
-    /**
-     * Gets the state set to this attendee
-     *
-     * @return EE_Base_Class|EE_State
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function state_obj()
-    {
-        return $this->get_first_related('State');
-    }
-
-
-    /**
-     * Gets country set for this attendee
-     *
-     * @return EE_Base_Class|EE_Country
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function country_obj()
-    {
-        return $this->get_first_related('Country');
-    }
-
-
-    /**
-     * get Attendee Zip/Postal Code
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function zip()
-    {
-        return $this->get('ATT_zip');
-    }
-
-
-    /**
-     * get deleted
-     *
-     * @return        bool
-     * @throws EE_Error
-     */
-    public function deleted()
-    {
-        return $this->get('ATT_deleted');
-    }
-
-
-    /**
-     * Gets registrations of this attendee
-     *
-     * @param array $query_params
-     * @return array[]|EE_Base_Class[]|EE_Registration[]
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function get_registrations($query_params = [])
-    {
-        return $this->get_many_related('Registration', $query_params);
-    }
-
-
-    /**
-     * Gets the most recent registration of this attendee
-     *
-     * @return EE_Base_Class|EE_Registration
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function get_most_recent_registration()
-    {
-        return $this->get_first_related(
-            'Registration',
-            ['order_by' => ['REG_date' => 'DESC']]
-        ); // null, 'REG_date', 'DESC', '=', 'OBJECT_K');
-    }
-
-
-    /**
-     * Gets the most recent registration for this attend at this event
-     *
-     * @param int $event_id
-     * @return EE_Base_Class|EE_Registration
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function get_most_recent_registration_for_event($event_id)
-    {
-        return $this->get_first_related(
-            'Registration',
-            [['EVT_ID' => $event_id], 'order_by' => ['REG_date' => 'DESC']]
-        );
-    }
-
-
-    /**
-     * returns any events attached to this attendee ($_Event property);
-     *
-     * @return array
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function events()
-    {
-        return $this->get_many_related('Event');
-    }
-
-
-    /**
-     * @return string
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function state_abbrev()
-    {
-        return $this->state_obj() instanceof EE_State ? $this->state_obj()->abbrev() : '';
-    }
-
-
-    /**
-     * Gets the billing info array where keys match espresso_reg_page_billing_inputs(),
-     * and keys are their cleaned values.
-     *
-     * @param EE_Payment_Method $payment_method the _gateway_name property on the gateway class
-     * @return EE_Form_Section_Proper|null
-     * @throws EE_Error
-     * @see EE_Attendee::save_and_clean_billing_info_for_payment_method() which was
-     *                                          used to save the billing info
-     */
-    public function billing_info_for_payment_method($payment_method)
-    {
-        $pm_type = $payment_method->type_obj();
-        if (! $pm_type instanceof EE_PMT_Base) {
-            return null;
-        }
-        $billing_info = $this->get_post_meta($this->get_billing_info_postmeta_name($payment_method), true);
-        if (! $billing_info) {
-            return null;
-        }
-        $billing_form = $pm_type->billing_form();
-        // double-check the form isn't totally hidden, in which case pretend there is no form
-        $form_totally_hidden = true;
-        foreach ($billing_form->inputs_in_subsections() as $input) {
-            if (! $input->get_display_strategy() instanceof EE_Hidden_Display_Strategy) {
-                $form_totally_hidden = false;
-                break;
-            }
-        }
-        if ($form_totally_hidden) {
-            return null;
-        }
-        if ($billing_form instanceof EE_Form_Section_Proper) {
-            $billing_form->receive_form_submission([$billing_form->name() => $billing_info], false);
-        }
-
-        return $billing_form;
-    }
-
-
-    /**
-     * Gets the postmeta key that holds this attendee's billing info for the
-     * specified payment method
-     *
-     * @param EE_Payment_Method $payment_method
-     * @return string
-     * @throws EE_Error
-     */
-    public function get_billing_info_postmeta_name($payment_method)
-    {
-        if ($payment_method->type_obj() instanceof EE_PMT_Base) {
-            return 'billing_info_' . $payment_method->type_obj()->system_name();
-        }
-        return null;
-    }
-
-
-    /**
-     * Saves the billing info to the attendee. @param EE_Billing_Attendee_Info_Form $billing_form
-     *
-     * @param EE_Payment_Method $payment_method
-     * @return boolean
-     * @throws EE_Error
-     * @see EE_Attendee::billing_info_for_payment_method() which is used to
-     *      retrieve it
-     */
-    public function save_and_clean_billing_info_for_payment_method($billing_form, $payment_method)
-    {
-        if (! $billing_form instanceof EE_Billing_Attendee_Info_Form) {
-            EE_Error::add_error(
-                __('Cannot save billing info because there is none.', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        $billing_form->clean_sensitive_data();
-        return update_post_meta(
-            $this->ID(),
-            $this->get_billing_info_postmeta_name($payment_method),
-            $billing_form->input_values(true)
-        );
-    }
-
-
-    /**
-     * Return the link to the admin details for the object.
-     *
-     * @return string
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public function get_admin_details_link()
-    {
-        return $this->get_admin_edit_link();
-    }
-
-
-    /**
-     * Returns the link to the editor for the object.  Sometimes this is the same as the details.
-     *
-     * @return string
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function get_admin_edit_link()
-    {
-        EE_Registry::instance()->load_helper('URL');
-        return EEH_URL::add_query_args_and_nonce(
-            [
-                'page'   => 'espresso_registrations',
-                'action' => 'edit_attendee',
-                'post'   => $this->ID(),
-            ],
-            admin_url('admin.php')
-        );
-    }
-
-
-    /**
-     * get Attendee Address
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function address()
-    {
-        return $this->get('ATT_address');
-    }
-
-
-    /**
-     * Returns the link to a settings page for the object.
-     *
-     * @return string
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public function get_admin_settings_link()
-    {
-        return $this->get_admin_edit_link();
-    }
-
-
-    /**
-     * Returns the link to the "overview" for the object (typically the "list table" view).
-     *
-     * @return string
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function get_admin_overview_link()
-    {
-        EE_Registry::instance()->load_helper('URL');
-        return EEH_URL::add_query_args_and_nonce(
-            [
-                'page'   => 'espresso_registrations',
-                'action' => 'contact_list',
-            ],
-            admin_url('admin.php')
-        );
-    }
-
-
-
-
-
-
-
-
-    /**
-     * get Attendee Address2
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function address2()
-    {
-        return $this->get('ATT_address2');
-    }
-
-
-    /**
-     * Returns the state's name, otherwise 'Unknown'
-     *
-     * @return string
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function state_name()
-    {
-        if ($this->state_obj()) {
-            return $this->state_obj()->name();
-        } else {
-            return '';
-        }
-    }
-
-
-    /**
-     * get Attendee City
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function city()
-    {
-        return $this->get('ATT_city');
-    }
-
-
-    /**
-     * either displays the state abbreviation or the state name, as determined
-     * by the "FHEE__EEI_Address__state__use_abbreviation" filter.
-     * defaults to abbreviation
-     *
-     * @return string
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function state()
-    {
-        if (apply_filters('FHEE__EEI_Address__state__use_abbreviation', true, $this->state_obj())) {
-            return $this->state_abbrev();
-        }
-        return $this->state_name();
-    }
-
-
-    /**
-     * get Attendee State ID
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function state_ID()
-    {
-        return $this->get('STA_ID');
-    }
-
-
-    /**
-     * get Attendee Country ISO Code
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function country_ID()
-    {
-        return $this->get('CNT_ISO');
-    }
-
-
-    /**
-     * Returns the country's name if known, otherwise 'Unknown'
-     *
-     * @return string
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function country_name()
-    {
-        if ($this->country_obj()) {
-            return $this->country_obj()->name();
-        }
-        return '';
-    }
-
-
-    /**
-     * either displays the country ISO2 code or the country name, as determined
-     * by the "FHEE__EEI_Address__country__use_abbreviation" filter.
-     * defaults to abbreviation
-     *
-     * @return string
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function country()
-    {
-        if (apply_filters('FHEE__EEI_Address__country__use_abbreviation', true, $this->country_obj())) {
-            return $this->country_ID();
-        }
-        return $this->country_name();
-    }
+	/**
+	 * Sets some dynamic defaults
+	 *
+	 * @param array  $fieldValues
+	 * @param bool   $bydb
+	 * @param string $timezone
+	 * @param array  $date_formats
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	protected function __construct($fieldValues = null, $bydb = false, $timezone = '', $date_formats = [])
+	{
+		if (! isset($fieldValues['ATT_full_name'])) {
+			$fname                        = isset($fieldValues['ATT_fname']) ? $fieldValues['ATT_fname'] . ' ' : '';
+			$lname                        = isset($fieldValues['ATT_lname']) ? $fieldValues['ATT_lname'] : '';
+			$fieldValues['ATT_full_name'] = $fname . $lname;
+		}
+		if (! isset($fieldValues['ATT_slug'])) {
+			// $fieldValues['ATT_slug'] = sanitize_key(wp_generate_password(20));
+			$fieldValues['ATT_slug'] = sanitize_title($fieldValues['ATT_full_name']);
+		}
+		if (! isset($fieldValues['ATT_short_bio']) && isset($fieldValues['ATT_bio'])) {
+			$fieldValues['ATT_short_bio'] = substr($fieldValues['ATT_bio'], 0, 50);
+		}
+		parent::__construct($fieldValues, $bydb, $timezone, $date_formats);
+	}
+
+
+	/**
+	 * @param array  $props_n_values    incoming values
+	 * @param string $timezone          incoming timezone
+	 *                                  (if not set the timezone set for the website will be used.)
+	 * @param array  $date_formats      incoming date_formats in an array where the first value is the
+	 *                                  date_format and the second value is the time format
+	 * @return EE_Attendee
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function new_instance($props_n_values = [], $timezone = '', $date_formats = [])
+	{
+		$has_object = parent::_check_for_object($props_n_values, __CLASS__, $timezone, $date_formats);
+		return $has_object ? $has_object : new self($props_n_values, false, $timezone, $date_formats);
+	}
+
+
+	/**
+	 * @param array  $props_n_values  incoming values from the database
+	 * @param string $timezone        incoming timezone as set by the model.
+	 *                                If not set the timezone for the website will be used.
+	 * @return EE_Attendee
+	 * @throws EE_Error
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function new_instance_from_db($props_n_values = [], $timezone = '')
+	{
+		return new self($props_n_values, true, $timezone);
+	}
+
+
+	/**
+	 * Set Attendee First Name
+	 *
+	 * @param string $fname
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_fname($fname = '')
+	{
+		$this->set('ATT_fname', $fname);
+	}
+
+
+	/**
+	 * Set Attendee Last Name
+	 *
+	 * @param string $lname
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_lname($lname = '')
+	{
+		$this->set('ATT_lname', $lname);
+	}
+
+
+	/**
+	 * Set Attendee Address
+	 *
+	 * @param string $address
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_address($address = '')
+	{
+		$this->set('ATT_address', $address);
+	}
+
+
+	/**
+	 * Set Attendee Address2
+	 *
+	 * @param string $address2
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_address2($address2 = '')
+	{
+		$this->set('ATT_address2', $address2);
+	}
+
+
+	/**
+	 * Set Attendee City
+	 *
+	 * @param string $city
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_city($city = '')
+	{
+		$this->set('ATT_city', $city);
+	}
+
+
+	/**
+	 * Set Attendee State ID
+	 *
+	 * @param int $STA_ID
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_state($STA_ID = 0)
+	{
+		$this->set('STA_ID', $STA_ID);
+	}
+
+
+	/**
+	 * Set Attendee Country ISO Code
+	 *
+	 * @param string $CNT_ISO
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_country($CNT_ISO = '')
+	{
+		$this->set('CNT_ISO', $CNT_ISO);
+	}
+
+
+	/**
+	 * Set Attendee Zip/Postal Code
+	 *
+	 * @param string $zip
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_zip($zip = '')
+	{
+		$this->set('ATT_zip', $zip);
+	}
+
+
+	/**
+	 * Set Attendee Email Address
+	 *
+	 * @param string $email
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_email($email = '')
+	{
+		$this->set('ATT_email', $email);
+	}
+
+
+	/**
+	 * Set Attendee Phone
+	 *
+	 * @param string $phone
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_phone($phone = '')
+	{
+		$this->set('ATT_phone', $phone);
+	}
+
+
+	/**
+	 * set deleted
+	 *
+	 * @param bool $ATT_deleted
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_deleted($ATT_deleted = false)
+	{
+		$this->set('ATT_deleted', $ATT_deleted);
+	}
+
+
+	/**
+	 * Returns the value for the post_author id saved with the cpt
+	 *
+	 * @return int
+	 * @throws EE_Error
+	 * @since 4.5.0
+	 */
+	public function wp_user()
+	{
+		return $this->get('ATT_author');
+	}
+
+
+	/**
+	 * echoes out the attendee's first name
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public function e_full_name()
+	{
+		echo $this->full_name();
+	}
+
+
+	/**
+	 * Returns the first and last name concatenated together with a space.
+	 *
+	 * @param bool $apply_html_entities
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function full_name($apply_html_entities = false)
+	{
+		$full_name = [
+			$this->fname(),
+			$this->lname(),
+		];
+		$full_name = array_filter($full_name);
+		$full_name = implode(' ', $full_name);
+		return $apply_html_entities
+			? htmlentities($full_name, ENT_QUOTES, 'UTF-8')
+			: $full_name;
+	}
+
+
+	/**
+	 * get Attendee First Name
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function fname()
+	{
+		return $this->get('ATT_fname');
+	}
+
+
+	/**
+	 * get Attendee Last Name
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function lname()
+	{
+		return $this->get('ATT_lname');
+	}
+
+
+	/**
+	 * get Attendee Email Address
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function email()
+	{
+		return $this->get('ATT_email');
+	}
+
+
+	/**
+	 * get Attendee Phone #
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function phone()
+	{
+		return $this->get('ATT_phone');
+	}
+
+
+	/**
+	 * This returns the value of the `ATT_full_name` field
+	 * which is usually equivalent to calling `full_name()`
+	 * unless the post_title field has been directly modified
+	 * in the db for the post (espresso_attendees post type)
+	 * for this attendee.
+	 *
+	 * @param bool $apply_html_entities
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function ATT_full_name($apply_html_entities = false)
+	{
+		return $apply_html_entities
+			? htmlentities(
+				$this->get('ATT_full_name'),
+				ENT_QUOTES,
+				'UTF-8'
+			)
+			: $this->get('ATT_full_name');
+	}
+
+
+	/**
+	 * get Attendee bio
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function bio()
+	{
+		return $this->get('ATT_bio');
+	}
+
+
+	/**
+	 * get Attendee short bio
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function short_bio()
+	{
+		return $this->get('ATT_short_bio');
+	}
+
+
+	/**
+	 * Gets the attendee's full address as an array
+	 * so client code can decide hwo to display it
+	 *
+	 * @return array numerically indexed,
+	 *               with each part of the address that is known.
+	 *               Eg, if the user only responded to state and country,
+	 *               it would be array(0=>'Alabama',1=>'USA')
+	 * @return array
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function full_address_as_array()
+	{
+		$full_address_array     = [];
+		$initial_address_fields = ['ATT_address', 'ATT_address2', 'ATT_city',];
+		foreach ($initial_address_fields as $address_field_name) {
+			$address_fields_value = $this->get($address_field_name);
+			if (! empty($address_fields_value)) {
+				$full_address_array[] = $address_fields_value;
+			}
+		}
+		// now handle state and country
+		$state_obj = $this->state_obj();
+		if ($state_obj instanceof EE_State) {
+			$full_address_array[] = $state_obj->name();
+		}
+		$country_obj = $this->country_obj();
+		if ($country_obj instanceof EE_Country) {
+			$full_address_array[] = $country_obj->name();
+		}
+		// lastly get the xip
+		$zip_value = $this->zip();
+		if (! empty($zip_value)) {
+			$full_address_array[] = $zip_value;
+		}
+		return $full_address_array;
+	}
+
+
+	/**
+	 * Gets the state set to this attendee
+	 *
+	 * @return EE_Base_Class|EE_State
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function state_obj()
+	{
+		return $this->get_first_related('State');
+	}
+
+
+	/**
+	 * Gets country set for this attendee
+	 *
+	 * @return EE_Base_Class|EE_Country
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function country_obj()
+	{
+		return $this->get_first_related('Country');
+	}
+
+
+	/**
+	 * get Attendee Zip/Postal Code
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function zip()
+	{
+		return $this->get('ATT_zip');
+	}
+
+
+	/**
+	 * get deleted
+	 *
+	 * @return        bool
+	 * @throws EE_Error
+	 */
+	public function deleted()
+	{
+		return $this->get('ATT_deleted');
+	}
+
+
+	/**
+	 * Gets registrations of this attendee
+	 *
+	 * @param array $query_params
+	 * @return array[]|EE_Base_Class[]|EE_Registration[]
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function get_registrations($query_params = [])
+	{
+		return $this->get_many_related('Registration', $query_params);
+	}
+
+
+	/**
+	 * Gets the most recent registration of this attendee
+	 *
+	 * @return EE_Base_Class|EE_Registration
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function get_most_recent_registration()
+	{
+		return $this->get_first_related(
+			'Registration',
+			['order_by' => ['REG_date' => 'DESC']]
+		); // null, 'REG_date', 'DESC', '=', 'OBJECT_K');
+	}
+
+
+	/**
+	 * Gets the most recent registration for this attend at this event
+	 *
+	 * @param int $event_id
+	 * @return EE_Base_Class|EE_Registration
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function get_most_recent_registration_for_event($event_id)
+	{
+		return $this->get_first_related(
+			'Registration',
+			[['EVT_ID' => $event_id], 'order_by' => ['REG_date' => 'DESC']]
+		);
+	}
+
+
+	/**
+	 * returns any events attached to this attendee ($_Event property);
+	 *
+	 * @return array
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function events()
+	{
+		return $this->get_many_related('Event');
+	}
+
+
+	/**
+	 * @return string
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function state_abbrev()
+	{
+		return $this->state_obj() instanceof EE_State ? $this->state_obj()->abbrev() : '';
+	}
+
+
+	/**
+	 * Gets the billing info array where keys match espresso_reg_page_billing_inputs(),
+	 * and keys are their cleaned values.
+	 *
+	 * @param EE_Payment_Method $payment_method the _gateway_name property on the gateway class
+	 * @return EE_Form_Section_Proper|null
+	 * @throws EE_Error
+	 * @see EE_Attendee::save_and_clean_billing_info_for_payment_method() which was
+	 *                                          used to save the billing info
+	 */
+	public function billing_info_for_payment_method($payment_method)
+	{
+		$pm_type = $payment_method->type_obj();
+		if (! $pm_type instanceof EE_PMT_Base) {
+			return null;
+		}
+		$billing_info = $this->get_post_meta($this->get_billing_info_postmeta_name($payment_method), true);
+		if (! $billing_info) {
+			return null;
+		}
+		$billing_form = $pm_type->billing_form();
+		// double-check the form isn't totally hidden, in which case pretend there is no form
+		$form_totally_hidden = true;
+		foreach ($billing_form->inputs_in_subsections() as $input) {
+			if (! $input->get_display_strategy() instanceof EE_Hidden_Display_Strategy) {
+				$form_totally_hidden = false;
+				break;
+			}
+		}
+		if ($form_totally_hidden) {
+			return null;
+		}
+		if ($billing_form instanceof EE_Form_Section_Proper) {
+			$billing_form->receive_form_submission([$billing_form->name() => $billing_info], false);
+		}
+
+		return $billing_form;
+	}
+
+
+	/**
+	 * Gets the postmeta key that holds this attendee's billing info for the
+	 * specified payment method
+	 *
+	 * @param EE_Payment_Method $payment_method
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function get_billing_info_postmeta_name($payment_method)
+	{
+		if ($payment_method->type_obj() instanceof EE_PMT_Base) {
+			return 'billing_info_' . $payment_method->type_obj()->system_name();
+		}
+		return null;
+	}
+
+
+	/**
+	 * Saves the billing info to the attendee. @param EE_Billing_Attendee_Info_Form $billing_form
+	 *
+	 * @param EE_Payment_Method $payment_method
+	 * @return boolean
+	 * @throws EE_Error
+	 * @see EE_Attendee::billing_info_for_payment_method() which is used to
+	 *      retrieve it
+	 */
+	public function save_and_clean_billing_info_for_payment_method($billing_form, $payment_method)
+	{
+		if (! $billing_form instanceof EE_Billing_Attendee_Info_Form) {
+			EE_Error::add_error(
+				__('Cannot save billing info because there is none.', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		$billing_form->clean_sensitive_data();
+		return update_post_meta(
+			$this->ID(),
+			$this->get_billing_info_postmeta_name($payment_method),
+			$billing_form->input_values(true)
+		);
+	}
+
+
+	/**
+	 * Return the link to the admin details for the object.
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public function get_admin_details_link()
+	{
+		return $this->get_admin_edit_link();
+	}
+
+
+	/**
+	 * Returns the link to the editor for the object.  Sometimes this is the same as the details.
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function get_admin_edit_link()
+	{
+		EE_Registry::instance()->load_helper('URL');
+		return EEH_URL::add_query_args_and_nonce(
+			[
+				'page'   => 'espresso_registrations',
+				'action' => 'edit_attendee',
+				'post'   => $this->ID(),
+			],
+			admin_url('admin.php')
+		);
+	}
+
+
+	/**
+	 * get Attendee Address
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function address()
+	{
+		return $this->get('ATT_address');
+	}
+
+
+	/**
+	 * Returns the link to a settings page for the object.
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public function get_admin_settings_link()
+	{
+		return $this->get_admin_edit_link();
+	}
+
+
+	/**
+	 * Returns the link to the "overview" for the object (typically the "list table" view).
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function get_admin_overview_link()
+	{
+		EE_Registry::instance()->load_helper('URL');
+		return EEH_URL::add_query_args_and_nonce(
+			[
+				'page'   => 'espresso_registrations',
+				'action' => 'contact_list',
+			],
+			admin_url('admin.php')
+		);
+	}
+
+
+
+
+
+
+
+
+	/**
+	 * get Attendee Address2
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function address2()
+	{
+		return $this->get('ATT_address2');
+	}
+
+
+	/**
+	 * Returns the state's name, otherwise 'Unknown'
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function state_name()
+	{
+		if ($this->state_obj()) {
+			return $this->state_obj()->name();
+		} else {
+			return '';
+		}
+	}
+
+
+	/**
+	 * get Attendee City
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function city()
+	{
+		return $this->get('ATT_city');
+	}
+
+
+	/**
+	 * either displays the state abbreviation or the state name, as determined
+	 * by the "FHEE__EEI_Address__state__use_abbreviation" filter.
+	 * defaults to abbreviation
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function state()
+	{
+		if (apply_filters('FHEE__EEI_Address__state__use_abbreviation', true, $this->state_obj())) {
+			return $this->state_abbrev();
+		}
+		return $this->state_name();
+	}
+
+
+	/**
+	 * get Attendee State ID
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function state_ID()
+	{
+		return $this->get('STA_ID');
+	}
+
+
+	/**
+	 * get Attendee Country ISO Code
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function country_ID()
+	{
+		return $this->get('CNT_ISO');
+	}
+
+
+	/**
+	 * Returns the country's name if known, otherwise 'Unknown'
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function country_name()
+	{
+		if ($this->country_obj()) {
+			return $this->country_obj()->name();
+		}
+		return '';
+	}
+
+
+	/**
+	 * either displays the country ISO2 code or the country name, as determined
+	 * by the "FHEE__EEI_Address__country__use_abbreviation" filter.
+	 * defaults to abbreviation
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function country()
+	{
+		if (apply_filters('FHEE__EEI_Address__country__use_abbreviation', true, $this->country_obj())) {
+			return $this->country_ID();
+		}
+		return $this->country_name();
+	}
 }

Spacing +13 added lines, -13 removed lines

@@ -25,16 +25,16 @@ 
      */
     protected function __construct($fieldValues = null, $bydb = false, $timezone = '', $date_formats = [])
     {
-        if (! isset($fieldValues['ATT_full_name'])) {
-            $fname                        = isset($fieldValues['ATT_fname']) ? $fieldValues['ATT_fname'] . ' ' : '';
+        if ( ! isset($fieldValues['ATT_full_name'])) {
+            $fname                        = isset($fieldValues['ATT_fname']) ? $fieldValues['ATT_fname'].' ' : '';
             $lname                        = isset($fieldValues['ATT_lname']) ? $fieldValues['ATT_lname'] : '';
-            $fieldValues['ATT_full_name'] = $fname . $lname;
+            $fieldValues['ATT_full_name'] = $fname.$lname;
         }
-        if (! isset($fieldValues['ATT_slug'])) {
+        if ( ! isset($fieldValues['ATT_slug'])) {
             // $fieldValues['ATT_slug'] = sanitize_key(wp_generate_password(20));
             $fieldValues['ATT_slug'] = sanitize_title($fieldValues['ATT_full_name']);
         }
-        if (! isset($fieldValues['ATT_short_bio']) && isset($fieldValues['ATT_bio'])) {
+        if ( ! isset($fieldValues['ATT_short_bio']) && isset($fieldValues['ATT_bio'])) {
             $fieldValues['ATT_short_bio'] = substr($fieldValues['ATT_bio'], 0, 50);
         }
         parent::__construct($fieldValues, $bydb, $timezone, $date_formats);
@@ -372,10 +372,10 @@ 
     public function full_address_as_array()
     {
         $full_address_array     = [];
-        $initial_address_fields = ['ATT_address', 'ATT_address2', 'ATT_city',];
+        $initial_address_fields = ['ATT_address', 'ATT_address2', 'ATT_city', ];
         foreach ($initial_address_fields as $address_field_name) {
             $address_fields_value = $this->get($address_field_name);
-            if (! empty($address_fields_value)) {
+            if ( ! empty($address_fields_value)) {
                 $full_address_array[] = $address_fields_value;
             }
         }
@@ -390,7 +390,7 @@ 
         }
         // lastly get the xip
         $zip_value = $this->zip();
-        if (! empty($zip_value)) {
+        if ( ! empty($zip_value)) {
             $full_address_array[] = $zip_value;
         }
         return $full_address_array;
@@ -531,18 +531,18 @@ 
     public function billing_info_for_payment_method($payment_method)
     {
         $pm_type = $payment_method->type_obj();
-        if (! $pm_type instanceof EE_PMT_Base) {
+        if ( ! $pm_type instanceof EE_PMT_Base) {
             return null;
         }
         $billing_info = $this->get_post_meta($this->get_billing_info_postmeta_name($payment_method), true);
-        if (! $billing_info) {
+        if ( ! $billing_info) {
             return null;
         }
         $billing_form = $pm_type->billing_form();
         // double-check the form isn't totally hidden, in which case pretend there is no form
         $form_totally_hidden = true;
         foreach ($billing_form->inputs_in_subsections() as $input) {
-            if (! $input->get_display_strategy() instanceof EE_Hidden_Display_Strategy) {
+            if ( ! $input->get_display_strategy() instanceof EE_Hidden_Display_Strategy) {
                 $form_totally_hidden = false;
                 break;
             }
@@ -569,7 +569,7 @@ 
     public function get_billing_info_postmeta_name($payment_method)
     {
         if ($payment_method->type_obj() instanceof EE_PMT_Base) {
-            return 'billing_info_' . $payment_method->type_obj()->system_name();
+            return 'billing_info_'.$payment_method->type_obj()->system_name();
         }
         return null;
     }
@@ -586,7 +586,7 @@ 
      */
     public function save_and_clean_billing_info_for_payment_method($billing_form, $payment_method)
     {
-        if (! $billing_form instanceof EE_Billing_Attendee_Info_Form) {
+        if ( ! $billing_form instanceof EE_Billing_Attendee_Info_Form) {
             EE_Error::add_error(
                 __('Cannot save billing info because there is none.', 'event_espresso'),
                 __FILE__,

core/db_classes/EE_CPT_Base.class.php

Doc Comments +6 added lines, -6 removed lines

@@ -167,7 +167,7 @@ 
      *
      * @link   http://codex.wordpress.org/Function_Reference/get_the_post_thumbnail
      * @access protected
-     * @param string|array $size (optional) Image size. Defaults to 'post-thumbnail' but can also be a 2-item array
+     * @param string $size (optional) Image size. Defaults to 'post-thumbnail' but can also be a 2-item array
      *                           representing width and height in pixels (i.e. array(32,32) ).
      * @param string|array $attr Optional. Query string or array of attributes.
      * @return string HTML image element
@@ -211,7 +211,7 @@ 
      * This is a method for restoring this_obj using details from the given $revision_id
      *
      * @param int   $revision_id       ID of the revision we're getting data from
-     * @param array $related_obj_names if included this will be used to restore for related obj
+     * @param string[] $related_obj_names if included this will be used to restore for related obj
      *                                 if not included then we just do restore on the meta.
      *                                 We will accept an array of related_obj_names for restoration here.
      * @param array $where_query       You can optionally include an array of key=>value pairs
@@ -277,7 +277,7 @@ 
      *
      * @param string  $meta_key
      * @param boolean $single
-     * @return mixed
+     * @return string|null
      * @throws EE_Error
      */
     public function get_post_meta($meta_key = null, $single = false)
@@ -312,8 +312,8 @@ 
     /**
      * Wrapper for add_post_meta, http://codex.wordpress.org/Function_Reference/add_post_meta
      *
-     * @param mixed $meta_key
-     * @param mixed $meta_value
+     * @param string $meta_key
+     * @param string $meta_value
      * @param bool  $unique     If postmeta for this $meta_key already exists,
      *                          whether to add an additional item or not
      * @return boolean          Boolean true, except if the $unique argument was set to true
@@ -334,7 +334,7 @@ 
     /**
      * Wrapper for delete_post_meta, http://codex.wordpress.org/Function_Reference/delete_post_meta
      *
-     * @param mixed $meta_key
+     * @param string $meta_key
      * @param mixed $meta_value
      * @return boolean False for failure. True for success.
      * @throws EE_Error

Indentation +483 added lines, -483 removed lines

@@ -12,487 +12,487 @@
 abstract class EE_CPT_Base extends EE_Soft_Delete_Base_Class
 {
 
-    /**
-     * This is a property for holding cached feature images on CPT objects.
-     * Cache's are set on the first "feature_image()" method call.
-     * Each key in the array corresponds to the requested size.
-     *
-     * @var array
-     */
-    protected $_feature_image = [];
-
-    /**
-     * @var WP_Post the WP_Post that corresponds with this CPT model object
-     */
-    protected $_wp_post;
-
-
-    abstract public function wp_user();
-
-
-    /**
-     * Adds to the specified event category. If it category doesn't exist, creates it.
-     *
-     * @param string $category_name
-     * @param string $category_description    optional
-     * @param int    $parent_term_taxonomy_id optional
-     * @return EE_Term_Taxonomy
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function add_event_category($category_name, $category_description = null, $parent_term_taxonomy_id = null)
-    {
-        return $this->get_model()->add_event_category(
-            $this,
-            $category_name,
-            $category_description,
-            $parent_term_taxonomy_id
-        );
-    }
-
-
-    /**
-     * Removes the event category by specified name from being related ot this event
-     *
-     * @param string $category_name
-     * @return bool
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function remove_event_category($category_name)
-    {
-        return $this->get_model()->remove_event_category($this, $category_name);
-    }
-
-
-    /**
-     * Removes the relation to the specified term taxonomy, and maintains the
-     * data integrity of the term taxonomy provided
-     *
-     * @param EE_Term_Taxonomy $term_taxonomy
-     * @return EE_Base_Class the relation was removed from
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function remove_relation_to_term_taxonomy($term_taxonomy)
-    {
-        if (! $term_taxonomy) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        "No Term_Taxonomy provided which to remove from model object of type %s and id %d",
-                        "event_espresso"
-                    ),
-                    get_class($this),
-                    $this->ID()
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return null;
-        }
-        $term_taxonomy->set_count($term_taxonomy->count() - 1);
-        $term_taxonomy->save();
-        return $this->_remove_relation_to($term_taxonomy, 'Term_Taxonomy');
-    }
-
-
-    /**
-     * The main purpose of this method is to return the post type for the model object
-     *
-     * @return string
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function post_type()
-    {
-        return $this->get_model()->post_type();
-    }
-
-
-    /**
-     * The main purpose of this method is to return the parent for the model object
-     *
-     * @return int
-     * @throws EE_Error
-     */
-    public function parent()
-    {
-        return $this->get('parent');
-    }
-
-
-    /**
-     * return the _status property
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function status()
-    {
-        return $this->get('status');
-    }
-
-
-    /**
-     * @param string $status
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_status($status)
-    {
-        $this->set('status', $status);
-    }
-
-
-    /**
-     * See _get_feature_image. Returns the HTML to display a featured image
-     *
-     * @param string       $size
-     * @param string|array $attr
-     * @return string of html
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function feature_image($size = 'thumbnail', $attr = '')
-    {
-        return $this->_get_feature_image($size, $attr);
-    }
-
-
-    /**
-     * This calls the equivalent model method for retrieving the feature image
-     * which in turn is a wrapper for WordPress' get_the_post_thumbnail() function.
-     *
-     * @link   http://codex.wordpress.org/Function_Reference/get_the_post_thumbnail
-     * @access protected
-     * @param string|array $size (optional) Image size. Defaults to 'post-thumbnail' but can also be a 2-item array
-     *                           representing width and height in pixels (i.e. array(32,32) ).
-     * @param string|array $attr Optional. Query string or array of attributes.
-     * @return string HTML image element
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    protected function _get_feature_image($size, $attr)
-    {
-        // first let's see if we already have the _feature_image property set
-        // AND if it has a cached element on it FOR the given size
-        $attr_key                           = is_array($attr)
-            ? implode('_', $attr)
-            : $attr;
-        $cache_key                          = is_array($size)
-            ? implode('_', $size) . $attr_key
-            : $size . $attr_key;
-        $this->_feature_image[ $cache_key ] = isset($this->_feature_image[ $cache_key ])
-            ? $this->_feature_image[ $cache_key ]
-            : $this->get_model()->get_feature_image($this->ID(), $size, $attr);
-        return $this->_feature_image[ $cache_key ];
-    }
-
-
-    /**
-     * This uses the wp "wp_get_attachment_image_src()" function to return the feature image for the current class
-     * using the given size params.
-     *
-     * @param string|array $size  can either be a string: 'thumbnail', 'medium', 'large', 'full' OR 2-item array
-     *                            representing width and height in pixels eg. array(32,32).
-     * @return string|boolean          the url of the image or false if not found
-     * @throws EE_Error
-     */
-    public function feature_image_url($size = 'thumbnail')
-    {
-        $attachment = wp_get_attachment_image_src(get_post_thumbnail_id($this->ID()), $size);
-        return ! empty($attachment) ? $attachment[0] : false;
-    }
-
-
-    /**
-     * This is a method for restoring this_obj using details from the given $revision_id
-     *
-     * @param int   $revision_id       ID of the revision we're getting data from
-     * @param array $related_obj_names if included this will be used to restore for related obj
-     *                                 if not included then we just do restore on the meta.
-     *                                 We will accept an array of related_obj_names for restoration here.
-     * @param array $where_query       You can optionally include an array of key=>value pairs
-     *                                 that allow you to further constrict the relation to being added.
-     *                                 However, keep in mind that the columns (keys) given
-     *                                 must match a column on the JOIN table and currently
-     *                                 only the HABTM models accept these additional conditions.
-     *                                 Also remember that if an exact match isn't found for these extra cols/val pairs,
-     *                                 then a NEW row is created in the join table.
-     *                                 This array is INDEXED by RELATED OBJ NAME (so it corresponds with the obj_names
-     *                                 sent);
-     * @return void
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function restore_revision($revision_id, $related_obj_names = [], $where_query = [])
-    {
-        // get revision object
-        $revision_obj = $this->get_model()->get_one_by_ID($revision_id);
-        if ($revision_obj instanceof EE_CPT_Base) {
-            // no related_obj_name so we assume we're saving a revision on this object.
-            if (empty($related_obj_names)) {
-                $fields = $this->get_model()->get_meta_table_fields();
-                foreach ($fields as $field) {
-                    $this->set($field, $revision_obj->get($field));
-                }
-                $this->save();
-            }
-            $related_obj_names = (array) $related_obj_names;
-            foreach ($related_obj_names as $related_name) {
-                // related_obj_name so we're saving a revision on an object related to this object
-                // do we have $where_query params for this related object?  If we do then we include that.
-                $cols_n_values         = isset($where_query[ $related_name ])
-                    ? $where_query[ $related_name ]
-                    : [];
-                $where_params          = ! empty($cols_n_values) ? [$cols_n_values] : [];
-                $related_objs          = $this->get_many_related($related_name, $where_params);
-                $revision_related_objs = $revision_obj->get_many_related($related_name, $where_params);
-                // load helper
-                // remove related objs from this object that are not in revision
-                // array_diff *should* work cause I think objects are indexed by ID?
-                $related_to_remove = EEH_Array::object_array_diff($related_objs, $revision_related_objs);
-                foreach ($related_to_remove as $rr) {
-                    $this->_remove_relation_to($rr, $related_name, $cols_n_values);
-                }
-                // add all related objs attached to revision to this object
-                foreach ($revision_related_objs as $r_obj) {
-                    $this->_add_relation_to($r_obj, $related_name, $cols_n_values);
-                }
-            }
-        }
-    }
-
-
-    /**
-     * Wrapper for get_post_meta, http://codex.wordpress.org/Function_Reference/get_post_meta
-     * If only $id is set:
-     *  it will return all meta values in an associative array.
-     * If $single is set to false, or left blank:
-     *  the function returns an array containing all values of the specified key.
-     * If $single is set to true:
-     *  the function returns the first value of the specified key (not in an array)
-     *
-     * @param string  $meta_key
-     * @param boolean $single
-     * @return mixed
-     * @throws EE_Error
-     */
-    public function get_post_meta($meta_key = null, $single = false)
-    {
-        return get_post_meta($this->ID(), $meta_key, $single);
-    }
-
-
-    /**
-     * Wrapper for update_post_meta, http://codex.wordpress.org/Function_Reference/update_post_meta
-     * Returns meta_id if the meta doesn't exist,
-     * otherwise returns true on success and false on failure.
-     * NOTE: If the meta_value passed to this function is the same
-     * as the value that is already in the database, this function returns false.
-     *
-     * @param string $meta_key
-     * @param mixed  $meta_value
-     * @param mixed  $prev_value
-     * @return mixed
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function update_post_meta($meta_key, $meta_value, $prev_value = null)
-    {
-        if (! $this->ID()) {
-            $this->save();
-        }
-        return update_post_meta($this->ID(), $meta_key, $meta_value, $prev_value);
-    }
-
-
-    /**
-     * Wrapper for add_post_meta, http://codex.wordpress.org/Function_Reference/add_post_meta
-     *
-     * @param mixed $meta_key
-     * @param mixed $meta_value
-     * @param bool  $unique     If postmeta for this $meta_key already exists,
-     *                          whether to add an additional item or not
-     * @return boolean          Boolean true, except if the $unique argument was set to true
-     *                          and a custom field with the given key already exists,
-     *                          in which case false is returned.
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function add_post_meta($meta_key, $meta_value, $unique = false)
-    {
-        if ($this->ID()) {
-            $this->save();
-        }
-        return add_post_meta($this->ID(), $meta_key, $meta_value, $unique);
-    }
-
-
-    /**
-     * Wrapper for delete_post_meta, http://codex.wordpress.org/Function_Reference/delete_post_meta
-     *
-     * @param mixed $meta_key
-     * @param mixed $meta_value
-     * @return boolean False for failure. True for success.
-     * @throws EE_Error
-     */
-    public function delete_post_meta($meta_key, $meta_value = '')
-    {
-        if (! $this->ID()) {
-            // there is obviously no postmeta for this if it's not saved
-            // so let's just report this as a success
-            return true;
-        }
-        return delete_post_meta($this->ID(), $meta_key, $meta_value);
-    }
-
-
-    /**
-     * Gets the URL for viewing this event on the front-end
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function get_permalink()
-    {
-        return get_permalink($this->ID());
-    }
-
-
-    /**
-     * Gets all the term-taxonomies for this CPT
-     *
-     * @param array $query_params
-     * @return array[]|EE_Base_Class[]|EE_Term_Taxonomy
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function term_taxonomies($query_params = [])
-    {
-        return $this->get_many_related('Term_Taxonomy', $query_params);
-    }
-
-
-    /**
-     * @return mixed
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function get_custom_post_statuses()
-    {
-        return $this->get_model()->get_custom_post_statuses();
-    }
-
-
-    /**
-     * @return mixed
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function get_all_post_statuses()
-    {
-        return $this->get_model()->get_status_array();
-    }
-
-
-    /**
-     * When fetching a new value for a post field that uses the global $post for rendering,
-     * set the global $post temporarily to be this model object; and afterwards restore it
-     *
-     * @param string $field_name
-     * @param bool   $pretty
-     * @param string $extra_cache_ref
-     * @return mixed
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    protected function _get_fresh_property($field_name, $pretty = false, $extra_cache_ref = null)
-    {
-        global $post;
-
-        if (
-            $pretty
-            && (
-                ! (
-                    $post instanceof WP_Post
-                    && $post->ID
-                )
-                || (int) $post->ID !== $this->ID()
-            )
-            && $this->get_model()->field_settings_for($field_name) instanceof EE_Post_Content_Field
-        ) {
-            $old_post     = $post;
-            $post         = $this->wp_post();
-            $return_value = parent::_get_fresh_property($field_name, $pretty, $extra_cache_ref);
-            $post         = $old_post;
-        } else {
-            $return_value = parent::_get_fresh_property($field_name, $pretty, $extra_cache_ref);
-        }
-        return $return_value;
-    }
-
-
-    /**
-     * Returns the WP post associated with this CPT model object.
-     * If this CPT is saved, fetches it from the DB.
-     * Otherwise, create an unsaved WP_POst object. Caches the post internally.
-     *
-     * @return WP_Post
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function wp_post()
-    {
-        global $wpdb;
-        if (! $this->_wp_post instanceof WP_Post) {
-            if ($this->ID()) {
-                $this->_wp_post = get_post($this->ID());
-            } else {
-                $simulated_db_result = new stdClass();
-                $field_settings      = $this->get_model()->field_settings(true);
-                foreach ($field_settings as $field_name => $field_obj) {
-                    if (
-                        $this->get_model()->get_table_obj_by_alias($field_obj->get_table_alias())
-                             ->get_table_name() === $wpdb->posts
-                    ) {
-                        $column = $field_obj->get_table_column();
-
-                        if ($field_obj instanceof EE_Datetime_Field) {
-                            $value_on_model_obj = $this->get_DateTime_object($field_name);
-                        } elseif ($field_obj->is_db_only_field()) {
-                            $value_on_model_obj = $field_obj->get_default_value();
-                        } else {
-                            $value_on_model_obj = $this->get_raw($field_name);
-                        }
-                        $simulated_db_result->{$column} = $field_obj->prepare_for_use_in_db($value_on_model_obj);
-                    }
-                }
-                $this->_wp_post = new WP_Post($simulated_db_result);
-            }
-            // and let's make retrieving the EE CPT object easy too
-            $classname = get_class($this);
-            if (! isset($this->_wp_post->{$classname})) {
-                $this->_wp_post->{$classname} = $this;
-            }
-        }
-        return $this->_wp_post;
-    }
-
-
-    /**
-     * Don't serialize the WP Post. That's just duplicate data and we want to avoid recursion
-     *
-     * @return array
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function __sleep()
-    {
-        $properties_to_serialize = parent::__sleep();
-        $properties_to_serialize = array_diff($properties_to_serialize, ['_wp_post']);
-        return $properties_to_serialize;
-    }
+	/**
+	 * This is a property for holding cached feature images on CPT objects.
+	 * Cache's are set on the first "feature_image()" method call.
+	 * Each key in the array corresponds to the requested size.
+	 *
+	 * @var array
+	 */
+	protected $_feature_image = [];
+
+	/**
+	 * @var WP_Post the WP_Post that corresponds with this CPT model object
+	 */
+	protected $_wp_post;
+
+
+	abstract public function wp_user();
+
+
+	/**
+	 * Adds to the specified event category. If it category doesn't exist, creates it.
+	 *
+	 * @param string $category_name
+	 * @param string $category_description    optional
+	 * @param int    $parent_term_taxonomy_id optional
+	 * @return EE_Term_Taxonomy
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function add_event_category($category_name, $category_description = null, $parent_term_taxonomy_id = null)
+	{
+		return $this->get_model()->add_event_category(
+			$this,
+			$category_name,
+			$category_description,
+			$parent_term_taxonomy_id
+		);
+	}
+
+
+	/**
+	 * Removes the event category by specified name from being related ot this event
+	 *
+	 * @param string $category_name
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function remove_event_category($category_name)
+	{
+		return $this->get_model()->remove_event_category($this, $category_name);
+	}
+
+
+	/**
+	 * Removes the relation to the specified term taxonomy, and maintains the
+	 * data integrity of the term taxonomy provided
+	 *
+	 * @param EE_Term_Taxonomy $term_taxonomy
+	 * @return EE_Base_Class the relation was removed from
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function remove_relation_to_term_taxonomy($term_taxonomy)
+	{
+		if (! $term_taxonomy) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						"No Term_Taxonomy provided which to remove from model object of type %s and id %d",
+						"event_espresso"
+					),
+					get_class($this),
+					$this->ID()
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return null;
+		}
+		$term_taxonomy->set_count($term_taxonomy->count() - 1);
+		$term_taxonomy->save();
+		return $this->_remove_relation_to($term_taxonomy, 'Term_Taxonomy');
+	}
+
+
+	/**
+	 * The main purpose of this method is to return the post type for the model object
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function post_type()
+	{
+		return $this->get_model()->post_type();
+	}
+
+
+	/**
+	 * The main purpose of this method is to return the parent for the model object
+	 *
+	 * @return int
+	 * @throws EE_Error
+	 */
+	public function parent()
+	{
+		return $this->get('parent');
+	}
+
+
+	/**
+	 * return the _status property
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function status()
+	{
+		return $this->get('status');
+	}
+
+
+	/**
+	 * @param string $status
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_status($status)
+	{
+		$this->set('status', $status);
+	}
+
+
+	/**
+	 * See _get_feature_image. Returns the HTML to display a featured image
+	 *
+	 * @param string       $size
+	 * @param string|array $attr
+	 * @return string of html
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function feature_image($size = 'thumbnail', $attr = '')
+	{
+		return $this->_get_feature_image($size, $attr);
+	}
+
+
+	/**
+	 * This calls the equivalent model method for retrieving the feature image
+	 * which in turn is a wrapper for WordPress' get_the_post_thumbnail() function.
+	 *
+	 * @link   http://codex.wordpress.org/Function_Reference/get_the_post_thumbnail
+	 * @access protected
+	 * @param string|array $size (optional) Image size. Defaults to 'post-thumbnail' but can also be a 2-item array
+	 *                           representing width and height in pixels (i.e. array(32,32) ).
+	 * @param string|array $attr Optional. Query string or array of attributes.
+	 * @return string HTML image element
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	protected function _get_feature_image($size, $attr)
+	{
+		// first let's see if we already have the _feature_image property set
+		// AND if it has a cached element on it FOR the given size
+		$attr_key                           = is_array($attr)
+			? implode('_', $attr)
+			: $attr;
+		$cache_key                          = is_array($size)
+			? implode('_', $size) . $attr_key
+			: $size . $attr_key;
+		$this->_feature_image[ $cache_key ] = isset($this->_feature_image[ $cache_key ])
+			? $this->_feature_image[ $cache_key ]
+			: $this->get_model()->get_feature_image($this->ID(), $size, $attr);
+		return $this->_feature_image[ $cache_key ];
+	}
+
+
+	/**
+	 * This uses the wp "wp_get_attachment_image_src()" function to return the feature image for the current class
+	 * using the given size params.
+	 *
+	 * @param string|array $size  can either be a string: 'thumbnail', 'medium', 'large', 'full' OR 2-item array
+	 *                            representing width and height in pixels eg. array(32,32).
+	 * @return string|boolean          the url of the image or false if not found
+	 * @throws EE_Error
+	 */
+	public function feature_image_url($size = 'thumbnail')
+	{
+		$attachment = wp_get_attachment_image_src(get_post_thumbnail_id($this->ID()), $size);
+		return ! empty($attachment) ? $attachment[0] : false;
+	}
+
+
+	/**
+	 * This is a method for restoring this_obj using details from the given $revision_id
+	 *
+	 * @param int   $revision_id       ID of the revision we're getting data from
+	 * @param array $related_obj_names if included this will be used to restore for related obj
+	 *                                 if not included then we just do restore on the meta.
+	 *                                 We will accept an array of related_obj_names for restoration here.
+	 * @param array $where_query       You can optionally include an array of key=>value pairs
+	 *                                 that allow you to further constrict the relation to being added.
+	 *                                 However, keep in mind that the columns (keys) given
+	 *                                 must match a column on the JOIN table and currently
+	 *                                 only the HABTM models accept these additional conditions.
+	 *                                 Also remember that if an exact match isn't found for these extra cols/val pairs,
+	 *                                 then a NEW row is created in the join table.
+	 *                                 This array is INDEXED by RELATED OBJ NAME (so it corresponds with the obj_names
+	 *                                 sent);
+	 * @return void
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function restore_revision($revision_id, $related_obj_names = [], $where_query = [])
+	{
+		// get revision object
+		$revision_obj = $this->get_model()->get_one_by_ID($revision_id);
+		if ($revision_obj instanceof EE_CPT_Base) {
+			// no related_obj_name so we assume we're saving a revision on this object.
+			if (empty($related_obj_names)) {
+				$fields = $this->get_model()->get_meta_table_fields();
+				foreach ($fields as $field) {
+					$this->set($field, $revision_obj->get($field));
+				}
+				$this->save();
+			}
+			$related_obj_names = (array) $related_obj_names;
+			foreach ($related_obj_names as $related_name) {
+				// related_obj_name so we're saving a revision on an object related to this object
+				// do we have $where_query params for this related object?  If we do then we include that.
+				$cols_n_values         = isset($where_query[ $related_name ])
+					? $where_query[ $related_name ]
+					: [];
+				$where_params          = ! empty($cols_n_values) ? [$cols_n_values] : [];
+				$related_objs          = $this->get_many_related($related_name, $where_params);
+				$revision_related_objs = $revision_obj->get_many_related($related_name, $where_params);
+				// load helper
+				// remove related objs from this object that are not in revision
+				// array_diff *should* work cause I think objects are indexed by ID?
+				$related_to_remove = EEH_Array::object_array_diff($related_objs, $revision_related_objs);
+				foreach ($related_to_remove as $rr) {
+					$this->_remove_relation_to($rr, $related_name, $cols_n_values);
+				}
+				// add all related objs attached to revision to this object
+				foreach ($revision_related_objs as $r_obj) {
+					$this->_add_relation_to($r_obj, $related_name, $cols_n_values);
+				}
+			}
+		}
+	}
+
+
+	/**
+	 * Wrapper for get_post_meta, http://codex.wordpress.org/Function_Reference/get_post_meta
+	 * If only $id is set:
+	 *  it will return all meta values in an associative array.
+	 * If $single is set to false, or left blank:
+	 *  the function returns an array containing all values of the specified key.
+	 * If $single is set to true:
+	 *  the function returns the first value of the specified key (not in an array)
+	 *
+	 * @param string  $meta_key
+	 * @param boolean $single
+	 * @return mixed
+	 * @throws EE_Error
+	 */
+	public function get_post_meta($meta_key = null, $single = false)
+	{
+		return get_post_meta($this->ID(), $meta_key, $single);
+	}
+
+
+	/**
+	 * Wrapper for update_post_meta, http://codex.wordpress.org/Function_Reference/update_post_meta
+	 * Returns meta_id if the meta doesn't exist,
+	 * otherwise returns true on success and false on failure.
+	 * NOTE: If the meta_value passed to this function is the same
+	 * as the value that is already in the database, this function returns false.
+	 *
+	 * @param string $meta_key
+	 * @param mixed  $meta_value
+	 * @param mixed  $prev_value
+	 * @return mixed
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function update_post_meta($meta_key, $meta_value, $prev_value = null)
+	{
+		if (! $this->ID()) {
+			$this->save();
+		}
+		return update_post_meta($this->ID(), $meta_key, $meta_value, $prev_value);
+	}
+
+
+	/**
+	 * Wrapper for add_post_meta, http://codex.wordpress.org/Function_Reference/add_post_meta
+	 *
+	 * @param mixed $meta_key
+	 * @param mixed $meta_value
+	 * @param bool  $unique     If postmeta for this $meta_key already exists,
+	 *                          whether to add an additional item or not
+	 * @return boolean          Boolean true, except if the $unique argument was set to true
+	 *                          and a custom field with the given key already exists,
+	 *                          in which case false is returned.
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function add_post_meta($meta_key, $meta_value, $unique = false)
+	{
+		if ($this->ID()) {
+			$this->save();
+		}
+		return add_post_meta($this->ID(), $meta_key, $meta_value, $unique);
+	}
+
+
+	/**
+	 * Wrapper for delete_post_meta, http://codex.wordpress.org/Function_Reference/delete_post_meta
+	 *
+	 * @param mixed $meta_key
+	 * @param mixed $meta_value
+	 * @return boolean False for failure. True for success.
+	 * @throws EE_Error
+	 */
+	public function delete_post_meta($meta_key, $meta_value = '')
+	{
+		if (! $this->ID()) {
+			// there is obviously no postmeta for this if it's not saved
+			// so let's just report this as a success
+			return true;
+		}
+		return delete_post_meta($this->ID(), $meta_key, $meta_value);
+	}
+
+
+	/**
+	 * Gets the URL for viewing this event on the front-end
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function get_permalink()
+	{
+		return get_permalink($this->ID());
+	}
+
+
+	/**
+	 * Gets all the term-taxonomies for this CPT
+	 *
+	 * @param array $query_params
+	 * @return array[]|EE_Base_Class[]|EE_Term_Taxonomy
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function term_taxonomies($query_params = [])
+	{
+		return $this->get_many_related('Term_Taxonomy', $query_params);
+	}
+
+
+	/**
+	 * @return mixed
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function get_custom_post_statuses()
+	{
+		return $this->get_model()->get_custom_post_statuses();
+	}
+
+
+	/**
+	 * @return mixed
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function get_all_post_statuses()
+	{
+		return $this->get_model()->get_status_array();
+	}
+
+
+	/**
+	 * When fetching a new value for a post field that uses the global $post for rendering,
+	 * set the global $post temporarily to be this model object; and afterwards restore it
+	 *
+	 * @param string $field_name
+	 * @param bool   $pretty
+	 * @param string $extra_cache_ref
+	 * @return mixed
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	protected function _get_fresh_property($field_name, $pretty = false, $extra_cache_ref = null)
+	{
+		global $post;
+
+		if (
+			$pretty
+			&& (
+				! (
+					$post instanceof WP_Post
+					&& $post->ID
+				)
+				|| (int) $post->ID !== $this->ID()
+			)
+			&& $this->get_model()->field_settings_for($field_name) instanceof EE_Post_Content_Field
+		) {
+			$old_post     = $post;
+			$post         = $this->wp_post();
+			$return_value = parent::_get_fresh_property($field_name, $pretty, $extra_cache_ref);
+			$post         = $old_post;
+		} else {
+			$return_value = parent::_get_fresh_property($field_name, $pretty, $extra_cache_ref);
+		}
+		return $return_value;
+	}
+
+
+	/**
+	 * Returns the WP post associated with this CPT model object.
+	 * If this CPT is saved, fetches it from the DB.
+	 * Otherwise, create an unsaved WP_POst object. Caches the post internally.
+	 *
+	 * @return WP_Post
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function wp_post()
+	{
+		global $wpdb;
+		if (! $this->_wp_post instanceof WP_Post) {
+			if ($this->ID()) {
+				$this->_wp_post = get_post($this->ID());
+			} else {
+				$simulated_db_result = new stdClass();
+				$field_settings      = $this->get_model()->field_settings(true);
+				foreach ($field_settings as $field_name => $field_obj) {
+					if (
+						$this->get_model()->get_table_obj_by_alias($field_obj->get_table_alias())
+							 ->get_table_name() === $wpdb->posts
+					) {
+						$column = $field_obj->get_table_column();
+
+						if ($field_obj instanceof EE_Datetime_Field) {
+							$value_on_model_obj = $this->get_DateTime_object($field_name);
+						} elseif ($field_obj->is_db_only_field()) {
+							$value_on_model_obj = $field_obj->get_default_value();
+						} else {
+							$value_on_model_obj = $this->get_raw($field_name);
+						}
+						$simulated_db_result->{$column} = $field_obj->prepare_for_use_in_db($value_on_model_obj);
+					}
+				}
+				$this->_wp_post = new WP_Post($simulated_db_result);
+			}
+			// and let's make retrieving the EE CPT object easy too
+			$classname = get_class($this);
+			if (! isset($this->_wp_post->{$classname})) {
+				$this->_wp_post->{$classname} = $this;
+			}
+		}
+		return $this->_wp_post;
+	}
+
+
+	/**
+	 * Don't serialize the WP Post. That's just duplicate data and we want to avoid recursion
+	 *
+	 * @return array
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function __sleep()
+	{
+		$properties_to_serialize = parent::__sleep();
+		$properties_to_serialize = array_diff($properties_to_serialize, ['_wp_post']);
+		return $properties_to_serialize;
+	}
 }

Spacing +12 added lines, -12 removed lines

@@ -76,7 +76,7 @@ 
      */
     public function remove_relation_to_term_taxonomy($term_taxonomy)
     {
-        if (! $term_taxonomy) {
+        if ( ! $term_taxonomy) {
             EE_Error::add_error(
                 sprintf(
                     esc_html__(
@@ -182,12 +182,12 @@ 
             ? implode('_', $attr)
             : $attr;
         $cache_key                          = is_array($size)
-            ? implode('_', $size) . $attr_key
-            : $size . $attr_key;
-        $this->_feature_image[ $cache_key ] = isset($this->_feature_image[ $cache_key ])
-            ? $this->_feature_image[ $cache_key ]
+            ? implode('_', $size).$attr_key
+            : $size.$attr_key;
+        $this->_feature_image[$cache_key] = isset($this->_feature_image[$cache_key])
+            ? $this->_feature_image[$cache_key]
             : $this->get_model()->get_feature_image($this->ID(), $size, $attr);
-        return $this->_feature_image[ $cache_key ];
+        return $this->_feature_image[$cache_key];
     }
 
 
@@ -244,8 +244,8 @@ 
             foreach ($related_obj_names as $related_name) {
                 // related_obj_name so we're saving a revision on an object related to this object
                 // do we have $where_query params for this related object?  If we do then we include that.
-                $cols_n_values         = isset($where_query[ $related_name ])
-                    ? $where_query[ $related_name ]
+                $cols_n_values         = isset($where_query[$related_name])
+                    ? $where_query[$related_name]
                     : [];
                 $where_params          = ! empty($cols_n_values) ? [$cols_n_values] : [];
                 $related_objs          = $this->get_many_related($related_name, $where_params);
@@ -302,7 +302,7 @@ 
      */
     public function update_post_meta($meta_key, $meta_value, $prev_value = null)
     {
-        if (! $this->ID()) {
+        if ( ! $this->ID()) {
             $this->save();
         }
         return update_post_meta($this->ID(), $meta_key, $meta_value, $prev_value);
@@ -341,7 +341,7 @@ 
      */
     public function delete_post_meta($meta_key, $meta_value = '')
     {
-        if (! $this->ID()) {
+        if ( ! $this->ID()) {
             // there is obviously no postmeta for this if it's not saved
             // so let's just report this as a success
             return true;
@@ -447,7 +447,7 @@ 
     public function wp_post()
     {
         global $wpdb;
-        if (! $this->_wp_post instanceof WP_Post) {
+        if ( ! $this->_wp_post instanceof WP_Post) {
             if ($this->ID()) {
                 $this->_wp_post = get_post($this->ID());
             } else {
@@ -474,7 +474,7 @@ 
             }
             // and let's make retrieving the EE CPT object easy too
             $classname = get_class($this);
-            if (! isset($this->_wp_post->{$classname})) {
+            if ( ! isset($this->_wp_post->{$classname})) {
                 $this->_wp_post->{$classname} = $this;
             }
         }

core/db_classes/EE_CSV.class.php

Doc Comments +2 added lines, -2 removed lines

@@ -339,8 +339,8 @@
      * and dies (in order to avoid other plugins from messing up the csv output)
      *
      * @param string $filename         the filename you want to give the file
-     * @param array  $model_data_array 3d array, as described in EE_CSV::write_model_data_to_csv()
-     * @return bool | void writes CSV file to output and dies
+     * @param boolean  $model_data_array 3d array, as described in EE_CSV::write_model_data_to_csv()
+     * @return boolean|null | void writes CSV file to output and dies
      * @throws EE_Error
      * @throws ReflectionException
      */

Indentation +621 added lines, -621 removed lines

@@ -13,625 +13,625 @@
 class EE_CSV
 {
 
-    /**
-     * string used for 1st cell in exports,
-     * which indicates that the following 2 rows will be metadata keys and values
-     */
-    const metadata_header = 'Event Espresso Export Meta Data';
-
-
-    /**
-     * instance of the EE_CSV object
-     *
-     * @var EE_CSV
-     */
-    private static $_instance;
-
-    /**
-     * @var array
-     */
-    private $_primary_keys;
-
-
-    /**
-     * private constructor to prevent direct creation
-     *
-     * @return void
-     */
-    private function __construct()
-    {
-        global $wpdb;
-
-        $this->_primary_keys = [
-            $wpdb->prefix . 'esp_answer'                  => ['ANS_ID'],
-            $wpdb->prefix . 'esp_attendee'                => ['ATT_ID'],
-            $wpdb->prefix . 'esp_datetime'                => ['DTT_ID'],
-            $wpdb->prefix . 'esp_event_question_group'    => ['EQG_ID'],
-            $wpdb->prefix . 'esp_message_template'        => ['MTP_ID'],
-            $wpdb->prefix . 'esp_payment'                 => ['PAY_ID'],
-            $wpdb->prefix . 'esp_price'                   => ['PRC_ID'],
-            $wpdb->prefix . 'esp_price_type'              => ['PRT_ID'],
-            $wpdb->prefix . 'esp_question'                => ['QST_ID'],
-            $wpdb->prefix . 'esp_question_group'          => ['QSG_ID'],
-            $wpdb->prefix . 'esp_question_group_question' => ['QGQ_ID'],
-            $wpdb->prefix . 'esp_question_option'         => ['QSO_ID'],
-            $wpdb->prefix . 'esp_registration'            => ['REG_ID'],
-            $wpdb->prefix . 'esp_status'                  => ['STS_ID'],
-            $wpdb->prefix . 'esp_transaction'             => ['TXN_ID'],
-            $wpdb->prefix . 'esp_transaction'             => ['TXN_ID'],
-            $wpdb->prefix . 'events_detail'               => ['id'],
-            $wpdb->prefix . 'events_category_detail'      => ['id'],
-            $wpdb->prefix . 'events_category_rel'         => ['id'],
-            $wpdb->prefix . 'events_venue'                => ['id'],
-            $wpdb->prefix . 'events_venue_rel'            => ['emeta_id'],
-            $wpdb->prefix . 'events_locale'               => ['id'],
-            $wpdb->prefix . 'events_locale_rel'           => ['id'],
-            $wpdb->prefix . 'events_personnel'            => ['id'],
-            $wpdb->prefix . 'events_personnel_rel'        => ['id'],
-        ];
-    }
-
-
-    /**
-     *        @ singleton method used to instantiate class object
-     *        @ access public
-     *
-     * @return EE_CSV
-     */
-    public static function instance()
-    {
-        // check if class object is instantiated
-        if (! self::$_instance instanceof EE_CSV) {
-            self::$_instance = new self();
-        }
-        return self::$_instance;
-    }
-
-
-    /**
-     * @Import contents of csv file and store values in an array to be manipulated by other functions
-     * @access public
-     * @param string  $path_to_file         - the csv file to be imported including the path to it's location.
-     *                                      If $model_name is provided, assumes that each row in the CSV represents a
-     *                                      model object for that model If $model_name ISN'T provided, assumes that
-     *                                      before model object data, there is a row where the first entry is simply
-     *                                      'MODEL', and next entry is the model's name, (untranslated) like Event, and
-     *                                      then maybe a row of headers, and then the model data. Eg.
-     *                                      '<br>MODEL,Event,<br>EVT_ID,EVT_name,...<br>1,Monkey
-     *                                      Party,...<br>2,Llamarama,...<br>MODEL,Venue,<br>VNU_ID,VNU_name<br>1,The
-     *                                      Forest
-     * @param string  $model_name           model name if we know what model we're importing
-     * @param boolean $first_row_is_headers - whether the first row of data is headers or not - TRUE = headers, FALSE =
-     *                                      data
-     * @return mixed - array on success - multi dimensional with headers as keys (if headers exist) OR string on fail -
-     *                                      error message like the following array('Event'=>array(
-     *                                      array('EVT_ID'=>1,'EVT_name'=>'bob party',...),
-     *                                      array('EVT_ID'=>2,'EVT_name'=>'llamarama',...),
-     *                                      ...
-     *                                      )
-     *                                      'Venue'=>array(
-     *                                      array('VNU_ID'=>1,'VNU_name'=>'the shack',...),
-     *                                      array('VNU_ID'=>2,'VNU_name'=>'tree house',...),
-     *                                      ...
-     *                                      )
-     *                                      ...
-     *                                      )
-     * @throws EE_Error
-     */
-    public function import_csv_to_model_data_array($path_to_file, $model_name = false, $first_row_is_headers = true)
-    {
-        $multi_dimensional_array = $this->import_csv_to_multi_dimensional_array($path_to_file);
-        if (empty($multi_dimensional_array)) {
-            return false;
-        }
-        // gotta start somewhere
-        $row = 1;
-        // array to store csv data in
-        $ee_formatted_data = [];
-        // array to store headers (column names)
-        $headers = [];
-        foreach ($multi_dimensional_array as $data) {
-            // if first cell is MODEL, then second cell is the MODEL name
-            if ($data[0] == 'MODEL') {
-                $model_name = $data[1];
-                // don't bother looking for model data in this row.
-                // The rest of this row should be blank
-                // AND pretend this is the first row again
-                $row = 1;
-                // reset headers
-                $headers = [];
-                continue;
-            }
-            if (strpos($data[0], EE_CSV::metadata_header) !== false) {
-                $model_name = EE_CSV::metadata_header;
-                // store like model data, we just won't try importing it etc.
-                $row = 1;
-                continue;
-            }
-
-
-            // how many columns are there?
-            $columns = count($data);
-
-            $model_entry = [];
-            // loop through each column
-            for ($i = 0; $i < $columns; $i++) {
-                // replace csv_enclosures with backslashed quotes
-                $data[ $i ] = str_replace('"""', '\\"', $data[ $i ]);
-                // do we need to grab the column names?
-                if ($row === 1) {
-                    if ($first_row_is_headers) {
-                        // store the column names to use for keys
-                        $column_name = $data[ $i ];
-                        // check it's not blank... sometimes CSV editing programs
-                        // add a bunch of empty columns onto the end...
-                        if (! $column_name) {
-                            continue;
-                        }
-                        $matches = [];
-                        if ($model_name == EE_CSV::metadata_header) {
-                            $headers[ $i ] = $column_name;
-                        } else {
-                            // now get the db table name from it (the part between square brackets)
-                            $success = preg_match('~(.*)\[(.*)\]~', $column_name, $matches);
-                            if (! $success) {
-                                EE_Error::add_error(
-                                    sprintf(
-                                        esc_html__(
-                                            "The column titled %s is invalid for importing. It must be be in the format of 'Nice Name[model_field_name]' in row %s",
-                                            "event_espresso"
-                                        ),
-                                        $column_name,
-                                        implode(",", $data)
-                                    ),
-                                    __FILE__,
-                                    __FUNCTION__,
-                                    __LINE__
-                                );
-                                return false;
-                            }
-                            $headers[ $i ] = $matches[2];
-                        }
-                    } else {
-                        // no column names means our final array will just use counters for keys
-                        $model_entry[ $headers[ $i ] ] = $data[ $i ];
-                        $headers[ $i ]                 = $i;
-                    }
-                    // and we need to store csv data
-                } else {
-                    // this column isn' ta header, store it if there is a header for it
-                    if (isset($headers[ $i ])) {
-                        $model_entry[ $headers[ $i ] ] = $data[ $i ];
-                    }
-                }
-            }
-            // save the row's data IF it's a non-header-row
-            if (! $first_row_is_headers || $row > 1) {
-                $ee_formatted_data[ $model_name ][] = $model_entry;
-            }
-            // advance to next row
-            $row++;
-        }
-
-        // delete the uploaded file
-        unlink($path_to_file);
-
-        // it's good to give back
-        return $ee_formatted_data;
-    }
-
-
-    /**
-     * Generic CSV-functionality to turn an entire CSV file into a single array that's
-     * NOT in a specific format to EE. It's just a 2-level array, with top-level arrays
-     * representing each row in the CSV file, and the second-level arrays being each column in that row
-     *
-     * @param string $path_to_file
-     * @return array of arrays. Top-level array has rows, second-level array has each item
-     * @throws EE_Error
-     */
-    public function import_csv_to_multi_dimensional_array($path_to_file)
-    {
-        // needed to deal with Mac line endings
-        ini_set('auto_detect_line_endings', true);
-        // because fgetcsv does not correctly deal with backslashed quotes such as \"
-        // we'll read the file into a string
-        $file_contents = $this->read_unicode_file($path_to_file);
-        // replace backslashed quotes with CSV enclosures
-        $file_contents = str_replace('\\"', '"""', $file_contents);
-        // HEY YOU! PUT THAT FILE BACK!!!
-        file_put_contents($path_to_file, $file_contents);
-
-        if (($file_handle = fopen($path_to_file, "r")) !== false) {
-            $csv_array = [];
-            // in PHP 5.3 fgetcsv accepts a 5th parameter, but the pre 5.3 versions
-            // of fgetcsv choke if passed more than 4 - is that crazy or what?
-            if (version_compare(PHP_VERSION, '5.3.0') < 0) {
-                //  PHP 5.2- version
-                // loop through each row of the file
-                while (($data = fgetcsv($file_handle)) !== false) {
-                    $csv_array[] = $data;
-                }
-            } else {
-                // loop through each row of the file
-                while (($data = fgetcsv($file_handle)) !== false) {
-                    $csv_array[] = $data;
-                }
-            }
-            # Close the File.
-            fclose($file_handle);
-            return $csv_array;
-        }
-        EE_Error::add_error(
-            sprintf(
-                esc_html__(
-                    "An error occurred - the file: %s could not opened.",
-                    "event_espresso"
-                ),
-                $path_to_file
-            ),
-            __FILE__,
-            __FUNCTION__,
-            __LINE__
-        );
-        return [];
-    }
-
-
-    /**
-     * Opens a unicode or utf file
-     * (normal file_get_contents has difficulty reading a unicode file)
-     *
-     * @param string $file_path
-     * @return string
-     * @throws EE_Error
-     * @see http://stackoverflow.com/questions/15092764/how-to-read-unicode-text-file-in-php
-     */
-    private function read_unicode_file($file_path)
-    {
-        $fc = "";
-        $fh = fopen($file_path, "rb");
-        if (! $fh) {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__("Cannot open file for read: %s<br>\n", 'event_espresso'),
-                    $file_path
-                )
-            );
-        }
-        $file_length = filesize($file_path);
-        $bc          = fread($fh, $file_length);
-        for ($i = 0; $i < $file_length; $i++) {
-            $c = substr($bc, $i, 1);
-            if ((ord($c) != 0) && (ord($c) != 13)) {
-                $fc = $fc . $c;
-            }
-        }
-        if ((ord(substr($fc, 0, 1)) == 255) && (ord(substr($fc, 1, 1)) == 254)) {
-            $fc = substr($fc, 2);
-        }
-        return ($fc);
-    }
-
-
-    /**
-     * @param       $csv_data_array
-     * @param false $model_name
-     * @return bool
-     * @throws EE_Error
-     */
-    public function save_csv_to_db($csv_data_array, $model_name = false)
-    {
-        EE_Error::doing_it_wrong(
-            'save_csv_to_db',
-            esc_html__(
-                'Function moved to EE_Import and renamed to save_csv_data_array_to_db',
-                'event_espresso'
-            ),
-            '4.6.7'
-        );
-        return EE_Import::instance()->save_csv_data_array_to_db($csv_data_array, $model_name);
-    }
-
-
-    /**
-     * Writes the CSV file to the output buffer, with rows corresponding to $model_data_array,
-     * and dies (in order to avoid other plugins from messing up the csv output)
-     *
-     * @param string $filename         the filename you want to give the file
-     * @param array  $model_data_array 3d array, as described in EE_CSV::write_model_data_to_csv()
-     * @return bool | void writes CSV file to output and dies
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function export_multiple_model_data_to_csv($filename, $model_data_array)
-    {
-        $file_handle = $this->begin_sending_csv($filename);
-        $this->write_model_data_to_csv($file_handle, $model_data_array);
-        $this->end_sending_csv($file_handle);
-    }
-
-
-    /**
-     * Sends HTTP headers to indicate that the browser should download a file,
-     * and starts writing the file to PHP's output. Returns the file handle so other functions can
-     * also write to it
-     *
-     * @param string $filename the name of the file that the user will download
-     * @return resource, like the results of fopen(), which can be used for fwrite, fputcsv2, etc.
-     */
-    public function begin_sending_csv($filename)
-    {
-        // grab file extension
-        $ext = substr(strrchr($filename, '.'), 1);
-        if ($ext == '.csv' or $ext == '.xls') {
-            str_replace($ext, '', $filename);
-        }
-        $filename .= '.csv';
-
-        // if somebody's been naughty and already started outputting stuff, trash it
-        // and start writing our stuff.
-        if (ob_get_length()) {
-            @ob_flush();
-            @flush();
-            @ob_end_flush();
-        }
-        @ob_start();
-        header("Pragma: public");
-        header("Expires: 0");
-        header("Pragma: no-cache");
-        header("Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
-        // header("Content-Type: application/force-download");
-        // header("Content-Type: application/octet-stream");
-        // header("Content-Type: application/download");
-        header('Content-disposition: attachment; filename=' . $filename);
-        header("Content-Type: text/csv; charset=utf-8");
-        do_action('AHEE__EE_CSV__begin_sending_csv__headers');
-        echo apply_filters(
-            'FHEE__EE_CSV__begin_sending_csv__start_writing',
-            "\xEF\xBB\xBF"
-        ); // makes excel open it as UTF-8. UTF-8 BOM, see http://stackoverflow.com/a/4440143/2773835
-        return fopen('php://output', 'w');
-    }
-
-
-    /**
-     * Given an open file, writes all the model data to it in the format the importer expects.
-     * Usually preceded by begin_sending_csv($filename), and followed by end_sending_csv($file_handle).
-     *
-     * @param resource $file_handle
-     * @param array    $model_data_array is assumed to be a 3d array: 1st layer has keys of model names (eg 'Event'),
-     *                                   next layer is numerically indexed to represent each model object (eg, each
-     *                                   individual event), and the last layer has all the attributes of that model
-     *                                   object (eg, the event's id, name, etc)
-     * @return void
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function write_model_data_to_csv($file_handle, $model_data_array)
-    {
-        $this->write_metadata_to_csv($file_handle);
-        foreach ($model_data_array as $model_name => $model_instance_arrays) {
-            // first: output a special row stating the model
-            $this->fputcsv2($file_handle, ['MODEL', $model_name]);
-            // if we have items to put in the CSV, do it normally
-
-            if (! empty($model_instance_arrays)) {
-                $this->write_data_array_to_csv($file_handle, $model_instance_arrays);
-            } else {
-                // echo "no data to write... so just write the headers";
-                // so there's actually NO model objects for that model.
-                // probably still want to show the columns
-                $model        = EE_Registry::instance()->load_model($model_name);
-                $column_names = [];
-                foreach ($model->field_settings() as $field) {
-                    $column_names[ $field->get_nicename() . "[" . $field->get_name() . "]" ] = null;
-                }
-                $this->write_data_array_to_csv($file_handle, [$column_names]);
-            }
-        }
-    }
-
-
-    /**
-     * Writes some meta data to the CSV as a bunch of columns. Initially we're only
-     * mentioning the version and timezone
-     *
-     * @param resource $file_handle
-     * @throws EE_Error
-     * @throws EE_Error
-     */
-    public function write_metadata_to_csv($file_handle)
-    {
-        $data_row = [EE_CSV::metadata_header];// do NOT translate because this exact string is used when importing
-        $this->fputcsv2($file_handle, $data_row);
-        $meta_data = [
-            0 => [
-                'version'        => espresso_version(),
-                'timezone'       => EEH_DTT_Helper::get_timezone(),
-                'time_of_export' => current_time('mysql'),
-                'site_url'       => site_url(),
-            ],
-        ];
-        $this->write_data_array_to_csv($file_handle, $meta_data);
-    }
-
-
-    /**
-     * @Drop   in replacement for PHP's fputcsv function - but this one works!!!
-     * @access private
-     * @param resource $fh         - file handle - what we are writing to
-     * @param array    $row        - individual row of csv data
-     * @param string   $delimiter  - csv delimiter
-     * @param string   $enclosure  - csv enclosure
-     * @param string   $mysql_null - allows php NULL to be overridden with MySQl's insertable NULL value
-     * @return void
-     */
-    private function fputcsv2($fh, array $row, $delimiter = ',', $enclosure = '"', $mysql_null = false)
-    {
-        // Allow user to filter the csv delimiter and enclosure for other countries csv standards
-        $delimiter = apply_filters('FHEE__EE_CSV__fputcsv2__delimiter', $delimiter);
-        $enclosure = apply_filters('FHEE__EE_CSV__fputcsv2__enclosure', $enclosure);
-
-        $delimiter_esc = preg_quote($delimiter, '/');
-        $enclosure_esc = preg_quote($enclosure, '/');
-
-        $output = [];
-        foreach ($row as $field_value) {
-            if (is_object($field_value) || is_array($field_value)) {
-                $field_value = serialize($field_value);
-            }
-            if ($field_value === null && $mysql_null) {
-                $output[] = 'NULL';
-                continue;
-            }
-
-            $output[] = preg_match("/(?:${delimiter_esc}|${enclosure_esc}|\s)/", $field_value)
-                ? ($enclosure . str_replace($enclosure, $enclosure . $enclosure, $field_value) . $enclosure)
-                : $field_value;
-        }
-
-        fwrite($fh, join($delimiter, $output) . PHP_EOL);
-    }
-
-
-    /**
-     * Writes $data to the csv file open in $file_handle. uses the array indices of $data for column headers
-     *
-     * @param resource $file_handle
-     * @param array    $data        2D array, first numerically-indexed,
-     *                              and next-level-down preferably indexed by string
-     * @return boolean              if we successfully wrote to the CSV or not.
-     *                              If there's no $data, we consider that a success
-     *                              (because we wrote everything there was...nothing)
-     * @throws EE_Error
-     * @throws EE_Error
-     */
-    public function write_data_array_to_csv($file_handle, $data)
-    {
-        // determine if $data is actually a 2d array
-        if ($data && is_array($data) && is_array(EEH_Array::get_one_item_from_array($data))) {
-            // make sure top level is numerically indexed,
-
-            if (EEH_Array::is_associative_array($data)) {
-                throw new EE_Error(
-                    sprintf(
-                        esc_html__(
-                            "top-level array must be numerically indexed. Does these look like numbers to you? %s",
-                            "event_espresso"
-                        ),
-                        implode(",", array_keys($data))
-                    )
-                );
-            }
-            $item_in_top_level_array = EEH_Array::get_one_item_from_array($data);
-            // now, is the last item in the top-level array of $data an associative or numeric array?
-            if (EEH_Array::is_associative_array($item_in_top_level_array)) {
-                // its associative, so we want to output its keys as column headers
-                $keys = array_keys($item_in_top_level_array);
-                $this->fputcsv2($file_handle, $keys);
-            }
-            // start writing data
-            foreach ($data as $data_row) {
-                $this->fputcsv2($file_handle, $data_row);
-            }
-            return true;
-        }
-        // no data TO write... so we can assume that's a success
-        return true;
-    }
-
-
-    /**
-     * Should be called after begin_sending_csv(), and one or more write_data_array_to_csv()s.
-     * Calls exit to prevent polluting the CSV file with other junk
-     *
-     * @param resource $fh file_handle where we're writing the CSV to
-     */
-    public function end_sending_csv($fh)
-    {
-        fclose($fh);
-        exit(0);
-    }
-
-
-    /**
-     * @Export contents of an array to csv file
-     * @access public
-     * @param array  $data     - the array of data to be converted to csv and exported
-     * @param string $filename - name for newly created csv file
-     * @return bool TRUE on success, FALSE on fail
-     */
-    public function export_array_to_csv($data = false, $filename = false)
-    {
-        // no data file?? get outta here
-        if (! $data or ! is_array($data) or empty($data)) {
-            return false;
-        }
-
-        // no filename?? get outta here
-        if (! $filename) {
-            return false;
-        }
-        $fh = $this->begin_sending_csv($filename);
-        $this->end_sending_csv($fh);
-        return true;
-    }
-
-
-    /**
-     * @Determine the maximum upload file size based on php.ini settings
-     * @access    public
-     * @param int $percent_of_max - desired percentage of the max upload_mb
-     * @return int KB
-     */
-    public function get_max_upload_size($percent_of_max = false)
-    {
-        $max_upload   = (int) (ini_get('upload_max_filesize'));
-        $max_post     = (int) (ini_get('post_max_size'));
-        $memory_limit = (int) (ini_get('memory_limit'));
-
-        // determine the smallest of the three values from above
-        $upload_mb = min($max_upload, $max_post, $memory_limit);
-
-        // convert MB to KB
-        $upload_mb = $upload_mb * 1024;
-
-        // don't want the full monty? then reduce the max upload size
-        if ($percent_of_max) {
-            // is percent_of_max like this -> 50 or like this -> 0.50 ?
-            if ($percent_of_max > 1) {
-                // changes 50 to 0.50
-                $percent_of_max = $percent_of_max / 100;
-            }
-            // make upload_mb a percentage of the max upload_mb
-            $upload_mb = $upload_mb * $percent_of_max;
-        }
-
-        return $upload_mb;
-    }
-
-
-    /**
-     * Gets the date format to use in teh csv. filterable
-     *
-     * @param string $current_format
-     * @return string
-     */
-    public function get_date_format_for_csv($current_format = null)
-    {
-        return apply_filters('FHEE__EE_CSV__get_date_format_for_csv__format', 'Y-m-d', $current_format);
-    }
-
-
-    /**
-     * Gets the time format we want to use in CSV reports. Filterable
-     *
-     * @param string $current_format
-     * @return string
-     */
-    public function get_time_format_for_csv($current_format = null)
-    {
-        return apply_filters('FHEE__EE_CSV__get_time_format_for_csv__format', 'H:i:s', $current_format);
-    }
+	/**
+	 * string used for 1st cell in exports,
+	 * which indicates that the following 2 rows will be metadata keys and values
+	 */
+	const metadata_header = 'Event Espresso Export Meta Data';
+
+
+	/**
+	 * instance of the EE_CSV object
+	 *
+	 * @var EE_CSV
+	 */
+	private static $_instance;
+
+	/**
+	 * @var array
+	 */
+	private $_primary_keys;
+
+
+	/**
+	 * private constructor to prevent direct creation
+	 *
+	 * @return void
+	 */
+	private function __construct()
+	{
+		global $wpdb;
+
+		$this->_primary_keys = [
+			$wpdb->prefix . 'esp_answer'                  => ['ANS_ID'],
+			$wpdb->prefix . 'esp_attendee'                => ['ATT_ID'],
+			$wpdb->prefix . 'esp_datetime'                => ['DTT_ID'],
+			$wpdb->prefix . 'esp_event_question_group'    => ['EQG_ID'],
+			$wpdb->prefix . 'esp_message_template'        => ['MTP_ID'],
+			$wpdb->prefix . 'esp_payment'                 => ['PAY_ID'],
+			$wpdb->prefix . 'esp_price'                   => ['PRC_ID'],
+			$wpdb->prefix . 'esp_price_type'              => ['PRT_ID'],
+			$wpdb->prefix . 'esp_question'                => ['QST_ID'],
+			$wpdb->prefix . 'esp_question_group'          => ['QSG_ID'],
+			$wpdb->prefix . 'esp_question_group_question' => ['QGQ_ID'],
+			$wpdb->prefix . 'esp_question_option'         => ['QSO_ID'],
+			$wpdb->prefix . 'esp_registration'            => ['REG_ID'],
+			$wpdb->prefix . 'esp_status'                  => ['STS_ID'],
+			$wpdb->prefix . 'esp_transaction'             => ['TXN_ID'],
+			$wpdb->prefix . 'esp_transaction'             => ['TXN_ID'],
+			$wpdb->prefix . 'events_detail'               => ['id'],
+			$wpdb->prefix . 'events_category_detail'      => ['id'],
+			$wpdb->prefix . 'events_category_rel'         => ['id'],
+			$wpdb->prefix . 'events_venue'                => ['id'],
+			$wpdb->prefix . 'events_venue_rel'            => ['emeta_id'],
+			$wpdb->prefix . 'events_locale'               => ['id'],
+			$wpdb->prefix . 'events_locale_rel'           => ['id'],
+			$wpdb->prefix . 'events_personnel'            => ['id'],
+			$wpdb->prefix . 'events_personnel_rel'        => ['id'],
+		];
+	}
+
+
+	/**
+	 *        @ singleton method used to instantiate class object
+	 *        @ access public
+	 *
+	 * @return EE_CSV
+	 */
+	public static function instance()
+	{
+		// check if class object is instantiated
+		if (! self::$_instance instanceof EE_CSV) {
+			self::$_instance = new self();
+		}
+		return self::$_instance;
+	}
+
+
+	/**
+	 * @Import contents of csv file and store values in an array to be manipulated by other functions
+	 * @access public
+	 * @param string  $path_to_file         - the csv file to be imported including the path to it's location.
+	 *                                      If $model_name is provided, assumes that each row in the CSV represents a
+	 *                                      model object for that model If $model_name ISN'T provided, assumes that
+	 *                                      before model object data, there is a row where the first entry is simply
+	 *                                      'MODEL', and next entry is the model's name, (untranslated) like Event, and
+	 *                                      then maybe a row of headers, and then the model data. Eg.
+	 *                                      '<br>MODEL,Event,<br>EVT_ID,EVT_name,...<br>1,Monkey
+	 *                                      Party,...<br>2,Llamarama,...<br>MODEL,Venue,<br>VNU_ID,VNU_name<br>1,The
+	 *                                      Forest
+	 * @param string  $model_name           model name if we know what model we're importing
+	 * @param boolean $first_row_is_headers - whether the first row of data is headers or not - TRUE = headers, FALSE =
+	 *                                      data
+	 * @return mixed - array on success - multi dimensional with headers as keys (if headers exist) OR string on fail -
+	 *                                      error message like the following array('Event'=>array(
+	 *                                      array('EVT_ID'=>1,'EVT_name'=>'bob party',...),
+	 *                                      array('EVT_ID'=>2,'EVT_name'=>'llamarama',...),
+	 *                                      ...
+	 *                                      )
+	 *                                      'Venue'=>array(
+	 *                                      array('VNU_ID'=>1,'VNU_name'=>'the shack',...),
+	 *                                      array('VNU_ID'=>2,'VNU_name'=>'tree house',...),
+	 *                                      ...
+	 *                                      )
+	 *                                      ...
+	 *                                      )
+	 * @throws EE_Error
+	 */
+	public function import_csv_to_model_data_array($path_to_file, $model_name = false, $first_row_is_headers = true)
+	{
+		$multi_dimensional_array = $this->import_csv_to_multi_dimensional_array($path_to_file);
+		if (empty($multi_dimensional_array)) {
+			return false;
+		}
+		// gotta start somewhere
+		$row = 1;
+		// array to store csv data in
+		$ee_formatted_data = [];
+		// array to store headers (column names)
+		$headers = [];
+		foreach ($multi_dimensional_array as $data) {
+			// if first cell is MODEL, then second cell is the MODEL name
+			if ($data[0] == 'MODEL') {
+				$model_name = $data[1];
+				// don't bother looking for model data in this row.
+				// The rest of this row should be blank
+				// AND pretend this is the first row again
+				$row = 1;
+				// reset headers
+				$headers = [];
+				continue;
+			}
+			if (strpos($data[0], EE_CSV::metadata_header) !== false) {
+				$model_name = EE_CSV::metadata_header;
+				// store like model data, we just won't try importing it etc.
+				$row = 1;
+				continue;
+			}
+
+
+			// how many columns are there?
+			$columns = count($data);
+
+			$model_entry = [];
+			// loop through each column
+			for ($i = 0; $i < $columns; $i++) {
+				// replace csv_enclosures with backslashed quotes
+				$data[ $i ] = str_replace('"""', '\\"', $data[ $i ]);
+				// do we need to grab the column names?
+				if ($row === 1) {
+					if ($first_row_is_headers) {
+						// store the column names to use for keys
+						$column_name = $data[ $i ];
+						// check it's not blank... sometimes CSV editing programs
+						// add a bunch of empty columns onto the end...
+						if (! $column_name) {
+							continue;
+						}
+						$matches = [];
+						if ($model_name == EE_CSV::metadata_header) {
+							$headers[ $i ] = $column_name;
+						} else {
+							// now get the db table name from it (the part between square brackets)
+							$success = preg_match('~(.*)\[(.*)\]~', $column_name, $matches);
+							if (! $success) {
+								EE_Error::add_error(
+									sprintf(
+										esc_html__(
+											"The column titled %s is invalid for importing. It must be be in the format of 'Nice Name[model_field_name]' in row %s",
+											"event_espresso"
+										),
+										$column_name,
+										implode(",", $data)
+									),
+									__FILE__,
+									__FUNCTION__,
+									__LINE__
+								);
+								return false;
+							}
+							$headers[ $i ] = $matches[2];
+						}
+					} else {
+						// no column names means our final array will just use counters for keys
+						$model_entry[ $headers[ $i ] ] = $data[ $i ];
+						$headers[ $i ]                 = $i;
+					}
+					// and we need to store csv data
+				} else {
+					// this column isn' ta header, store it if there is a header for it
+					if (isset($headers[ $i ])) {
+						$model_entry[ $headers[ $i ] ] = $data[ $i ];
+					}
+				}
+			}
+			// save the row's data IF it's a non-header-row
+			if (! $first_row_is_headers || $row > 1) {
+				$ee_formatted_data[ $model_name ][] = $model_entry;
+			}
+			// advance to next row
+			$row++;
+		}
+
+		// delete the uploaded file
+		unlink($path_to_file);
+
+		// it's good to give back
+		return $ee_formatted_data;
+	}
+
+
+	/**
+	 * Generic CSV-functionality to turn an entire CSV file into a single array that's
+	 * NOT in a specific format to EE. It's just a 2-level array, with top-level arrays
+	 * representing each row in the CSV file, and the second-level arrays being each column in that row
+	 *
+	 * @param string $path_to_file
+	 * @return array of arrays. Top-level array has rows, second-level array has each item
+	 * @throws EE_Error
+	 */
+	public function import_csv_to_multi_dimensional_array($path_to_file)
+	{
+		// needed to deal with Mac line endings
+		ini_set('auto_detect_line_endings', true);
+		// because fgetcsv does not correctly deal with backslashed quotes such as \"
+		// we'll read the file into a string
+		$file_contents = $this->read_unicode_file($path_to_file);
+		// replace backslashed quotes with CSV enclosures
+		$file_contents = str_replace('\\"', '"""', $file_contents);
+		// HEY YOU! PUT THAT FILE BACK!!!
+		file_put_contents($path_to_file, $file_contents);
+
+		if (($file_handle = fopen($path_to_file, "r")) !== false) {
+			$csv_array = [];
+			// in PHP 5.3 fgetcsv accepts a 5th parameter, but the pre 5.3 versions
+			// of fgetcsv choke if passed more than 4 - is that crazy or what?
+			if (version_compare(PHP_VERSION, '5.3.0') < 0) {
+				//  PHP 5.2- version
+				// loop through each row of the file
+				while (($data = fgetcsv($file_handle)) !== false) {
+					$csv_array[] = $data;
+				}
+			} else {
+				// loop through each row of the file
+				while (($data = fgetcsv($file_handle)) !== false) {
+					$csv_array[] = $data;
+				}
+			}
+			# Close the File.
+			fclose($file_handle);
+			return $csv_array;
+		}
+		EE_Error::add_error(
+			sprintf(
+				esc_html__(
+					"An error occurred - the file: %s could not opened.",
+					"event_espresso"
+				),
+				$path_to_file
+			),
+			__FILE__,
+			__FUNCTION__,
+			__LINE__
+		);
+		return [];
+	}
+
+
+	/**
+	 * Opens a unicode or utf file
+	 * (normal file_get_contents has difficulty reading a unicode file)
+	 *
+	 * @param string $file_path
+	 * @return string
+	 * @throws EE_Error
+	 * @see http://stackoverflow.com/questions/15092764/how-to-read-unicode-text-file-in-php
+	 */
+	private function read_unicode_file($file_path)
+	{
+		$fc = "";
+		$fh = fopen($file_path, "rb");
+		if (! $fh) {
+			throw new EE_Error(
+				sprintf(
+					esc_html__("Cannot open file for read: %s<br>\n", 'event_espresso'),
+					$file_path
+				)
+			);
+		}
+		$file_length = filesize($file_path);
+		$bc          = fread($fh, $file_length);
+		for ($i = 0; $i < $file_length; $i++) {
+			$c = substr($bc, $i, 1);
+			if ((ord($c) != 0) && (ord($c) != 13)) {
+				$fc = $fc . $c;
+			}
+		}
+		if ((ord(substr($fc, 0, 1)) == 255) && (ord(substr($fc, 1, 1)) == 254)) {
+			$fc = substr($fc, 2);
+		}
+		return ($fc);
+	}
+
+
+	/**
+	 * @param       $csv_data_array
+	 * @param false $model_name
+	 * @return bool
+	 * @throws EE_Error
+	 */
+	public function save_csv_to_db($csv_data_array, $model_name = false)
+	{
+		EE_Error::doing_it_wrong(
+			'save_csv_to_db',
+			esc_html__(
+				'Function moved to EE_Import and renamed to save_csv_data_array_to_db',
+				'event_espresso'
+			),
+			'4.6.7'
+		);
+		return EE_Import::instance()->save_csv_data_array_to_db($csv_data_array, $model_name);
+	}
+
+
+	/**
+	 * Writes the CSV file to the output buffer, with rows corresponding to $model_data_array,
+	 * and dies (in order to avoid other plugins from messing up the csv output)
+	 *
+	 * @param string $filename         the filename you want to give the file
+	 * @param array  $model_data_array 3d array, as described in EE_CSV::write_model_data_to_csv()
+	 * @return bool | void writes CSV file to output and dies
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function export_multiple_model_data_to_csv($filename, $model_data_array)
+	{
+		$file_handle = $this->begin_sending_csv($filename);
+		$this->write_model_data_to_csv($file_handle, $model_data_array);
+		$this->end_sending_csv($file_handle);
+	}
+
+
+	/**
+	 * Sends HTTP headers to indicate that the browser should download a file,
+	 * and starts writing the file to PHP's output. Returns the file handle so other functions can
+	 * also write to it
+	 *
+	 * @param string $filename the name of the file that the user will download
+	 * @return resource, like the results of fopen(), which can be used for fwrite, fputcsv2, etc.
+	 */
+	public function begin_sending_csv($filename)
+	{
+		// grab file extension
+		$ext = substr(strrchr($filename, '.'), 1);
+		if ($ext == '.csv' or $ext == '.xls') {
+			str_replace($ext, '', $filename);
+		}
+		$filename .= '.csv';
+
+		// if somebody's been naughty and already started outputting stuff, trash it
+		// and start writing our stuff.
+		if (ob_get_length()) {
+			@ob_flush();
+			@flush();
+			@ob_end_flush();
+		}
+		@ob_start();
+		header("Pragma: public");
+		header("Expires: 0");
+		header("Pragma: no-cache");
+		header("Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
+		// header("Content-Type: application/force-download");
+		// header("Content-Type: application/octet-stream");
+		// header("Content-Type: application/download");
+		header('Content-disposition: attachment; filename=' . $filename);
+		header("Content-Type: text/csv; charset=utf-8");
+		do_action('AHEE__EE_CSV__begin_sending_csv__headers');
+		echo apply_filters(
+			'FHEE__EE_CSV__begin_sending_csv__start_writing',
+			"\xEF\xBB\xBF"
+		); // makes excel open it as UTF-8. UTF-8 BOM, see http://stackoverflow.com/a/4440143/2773835
+		return fopen('php://output', 'w');
+	}
+
+
+	/**
+	 * Given an open file, writes all the model data to it in the format the importer expects.
+	 * Usually preceded by begin_sending_csv($filename), and followed by end_sending_csv($file_handle).
+	 *
+	 * @param resource $file_handle
+	 * @param array    $model_data_array is assumed to be a 3d array: 1st layer has keys of model names (eg 'Event'),
+	 *                                   next layer is numerically indexed to represent each model object (eg, each
+	 *                                   individual event), and the last layer has all the attributes of that model
+	 *                                   object (eg, the event's id, name, etc)
+	 * @return void
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function write_model_data_to_csv($file_handle, $model_data_array)
+	{
+		$this->write_metadata_to_csv($file_handle);
+		foreach ($model_data_array as $model_name => $model_instance_arrays) {
+			// first: output a special row stating the model
+			$this->fputcsv2($file_handle, ['MODEL', $model_name]);
+			// if we have items to put in the CSV, do it normally
+
+			if (! empty($model_instance_arrays)) {
+				$this->write_data_array_to_csv($file_handle, $model_instance_arrays);
+			} else {
+				// echo "no data to write... so just write the headers";
+				// so there's actually NO model objects for that model.
+				// probably still want to show the columns
+				$model        = EE_Registry::instance()->load_model($model_name);
+				$column_names = [];
+				foreach ($model->field_settings() as $field) {
+					$column_names[ $field->get_nicename() . "[" . $field->get_name() . "]" ] = null;
+				}
+				$this->write_data_array_to_csv($file_handle, [$column_names]);
+			}
+		}
+	}
+
+
+	/**
+	 * Writes some meta data to the CSV as a bunch of columns. Initially we're only
+	 * mentioning the version and timezone
+	 *
+	 * @param resource $file_handle
+	 * @throws EE_Error
+	 * @throws EE_Error
+	 */
+	public function write_metadata_to_csv($file_handle)
+	{
+		$data_row = [EE_CSV::metadata_header];// do NOT translate because this exact string is used when importing
+		$this->fputcsv2($file_handle, $data_row);
+		$meta_data = [
+			0 => [
+				'version'        => espresso_version(),
+				'timezone'       => EEH_DTT_Helper::get_timezone(),
+				'time_of_export' => current_time('mysql'),
+				'site_url'       => site_url(),
+			],
+		];
+		$this->write_data_array_to_csv($file_handle, $meta_data);
+	}
+
+
+	/**
+	 * @Drop   in replacement for PHP's fputcsv function - but this one works!!!
+	 * @access private
+	 * @param resource $fh         - file handle - what we are writing to
+	 * @param array    $row        - individual row of csv data
+	 * @param string   $delimiter  - csv delimiter
+	 * @param string   $enclosure  - csv enclosure
+	 * @param string   $mysql_null - allows php NULL to be overridden with MySQl's insertable NULL value
+	 * @return void
+	 */
+	private function fputcsv2($fh, array $row, $delimiter = ',', $enclosure = '"', $mysql_null = false)
+	{
+		// Allow user to filter the csv delimiter and enclosure for other countries csv standards
+		$delimiter = apply_filters('FHEE__EE_CSV__fputcsv2__delimiter', $delimiter);
+		$enclosure = apply_filters('FHEE__EE_CSV__fputcsv2__enclosure', $enclosure);
+
+		$delimiter_esc = preg_quote($delimiter, '/');
+		$enclosure_esc = preg_quote($enclosure, '/');
+
+		$output = [];
+		foreach ($row as $field_value) {
+			if (is_object($field_value) || is_array($field_value)) {
+				$field_value = serialize($field_value);
+			}
+			if ($field_value === null && $mysql_null) {
+				$output[] = 'NULL';
+				continue;
+			}
+
+			$output[] = preg_match("/(?:${delimiter_esc}|${enclosure_esc}|\s)/", $field_value)
+				? ($enclosure . str_replace($enclosure, $enclosure . $enclosure, $field_value) . $enclosure)
+				: $field_value;
+		}
+
+		fwrite($fh, join($delimiter, $output) . PHP_EOL);
+	}
+
+
+	/**
+	 * Writes $data to the csv file open in $file_handle. uses the array indices of $data for column headers
+	 *
+	 * @param resource $file_handle
+	 * @param array    $data        2D array, first numerically-indexed,
+	 *                              and next-level-down preferably indexed by string
+	 * @return boolean              if we successfully wrote to the CSV or not.
+	 *                              If there's no $data, we consider that a success
+	 *                              (because we wrote everything there was...nothing)
+	 * @throws EE_Error
+	 * @throws EE_Error
+	 */
+	public function write_data_array_to_csv($file_handle, $data)
+	{
+		// determine if $data is actually a 2d array
+		if ($data && is_array($data) && is_array(EEH_Array::get_one_item_from_array($data))) {
+			// make sure top level is numerically indexed,
+
+			if (EEH_Array::is_associative_array($data)) {
+				throw new EE_Error(
+					sprintf(
+						esc_html__(
+							"top-level array must be numerically indexed. Does these look like numbers to you? %s",
+							"event_espresso"
+						),
+						implode(",", array_keys($data))
+					)
+				);
+			}
+			$item_in_top_level_array = EEH_Array::get_one_item_from_array($data);
+			// now, is the last item in the top-level array of $data an associative or numeric array?
+			if (EEH_Array::is_associative_array($item_in_top_level_array)) {
+				// its associative, so we want to output its keys as column headers
+				$keys = array_keys($item_in_top_level_array);
+				$this->fputcsv2($file_handle, $keys);
+			}
+			// start writing data
+			foreach ($data as $data_row) {
+				$this->fputcsv2($file_handle, $data_row);
+			}
+			return true;
+		}
+		// no data TO write... so we can assume that's a success
+		return true;
+	}
+
+
+	/**
+	 * Should be called after begin_sending_csv(), and one or more write_data_array_to_csv()s.
+	 * Calls exit to prevent polluting the CSV file with other junk
+	 *
+	 * @param resource $fh file_handle where we're writing the CSV to
+	 */
+	public function end_sending_csv($fh)
+	{
+		fclose($fh);
+		exit(0);
+	}
+
+
+	/**
+	 * @Export contents of an array to csv file
+	 * @access public
+	 * @param array  $data     - the array of data to be converted to csv and exported
+	 * @param string $filename - name for newly created csv file
+	 * @return bool TRUE on success, FALSE on fail
+	 */
+	public function export_array_to_csv($data = false, $filename = false)
+	{
+		// no data file?? get outta here
+		if (! $data or ! is_array($data) or empty($data)) {
+			return false;
+		}
+
+		// no filename?? get outta here
+		if (! $filename) {
+			return false;
+		}
+		$fh = $this->begin_sending_csv($filename);
+		$this->end_sending_csv($fh);
+		return true;
+	}
+
+
+	/**
+	 * @Determine the maximum upload file size based on php.ini settings
+	 * @access    public
+	 * @param int $percent_of_max - desired percentage of the max upload_mb
+	 * @return int KB
+	 */
+	public function get_max_upload_size($percent_of_max = false)
+	{
+		$max_upload   = (int) (ini_get('upload_max_filesize'));
+		$max_post     = (int) (ini_get('post_max_size'));
+		$memory_limit = (int) (ini_get('memory_limit'));
+
+		// determine the smallest of the three values from above
+		$upload_mb = min($max_upload, $max_post, $memory_limit);
+
+		// convert MB to KB
+		$upload_mb = $upload_mb * 1024;
+
+		// don't want the full monty? then reduce the max upload size
+		if ($percent_of_max) {
+			// is percent_of_max like this -> 50 or like this -> 0.50 ?
+			if ($percent_of_max > 1) {
+				// changes 50 to 0.50
+				$percent_of_max = $percent_of_max / 100;
+			}
+			// make upload_mb a percentage of the max upload_mb
+			$upload_mb = $upload_mb * $percent_of_max;
+		}
+
+		return $upload_mb;
+	}
+
+
+	/**
+	 * Gets the date format to use in teh csv. filterable
+	 *
+	 * @param string $current_format
+	 * @return string
+	 */
+	public function get_date_format_for_csv($current_format = null)
+	{
+		return apply_filters('FHEE__EE_CSV__get_date_format_for_csv__format', 'Y-m-d', $current_format);
+	}
+
+
+	/**
+	 * Gets the time format we want to use in CSV reports. Filterable
+	 *
+	 * @param string $current_format
+	 * @return string
+	 */
+	public function get_time_format_for_csv($current_format = null)
+	{
+		return apply_filters('FHEE__EE_CSV__get_time_format_for_csv__format', 'H:i:s', $current_format);
+	}
 }

Spacing +48 added lines, -48 removed lines

@@ -43,31 +43,31 @@ 
         global $wpdb;
 
         $this->_primary_keys = [
-            $wpdb->prefix . 'esp_answer'                  => ['ANS_ID'],
-            $wpdb->prefix . 'esp_attendee'                => ['ATT_ID'],
-            $wpdb->prefix . 'esp_datetime'                => ['DTT_ID'],
-            $wpdb->prefix . 'esp_event_question_group'    => ['EQG_ID'],
-            $wpdb->prefix . 'esp_message_template'        => ['MTP_ID'],
-            $wpdb->prefix . 'esp_payment'                 => ['PAY_ID'],
-            $wpdb->prefix . 'esp_price'                   => ['PRC_ID'],
-            $wpdb->prefix . 'esp_price_type'              => ['PRT_ID'],
-            $wpdb->prefix . 'esp_question'                => ['QST_ID'],
-            $wpdb->prefix . 'esp_question_group'          => ['QSG_ID'],
-            $wpdb->prefix . 'esp_question_group_question' => ['QGQ_ID'],
-            $wpdb->prefix . 'esp_question_option'         => ['QSO_ID'],
-            $wpdb->prefix . 'esp_registration'            => ['REG_ID'],
-            $wpdb->prefix . 'esp_status'                  => ['STS_ID'],
-            $wpdb->prefix . 'esp_transaction'             => ['TXN_ID'],
-            $wpdb->prefix . 'esp_transaction'             => ['TXN_ID'],
-            $wpdb->prefix . 'events_detail'               => ['id'],
-            $wpdb->prefix . 'events_category_detail'      => ['id'],
-            $wpdb->prefix . 'events_category_rel'         => ['id'],
-            $wpdb->prefix . 'events_venue'                => ['id'],
-            $wpdb->prefix . 'events_venue_rel'            => ['emeta_id'],
-            $wpdb->prefix . 'events_locale'               => ['id'],
-            $wpdb->prefix . 'events_locale_rel'           => ['id'],
-            $wpdb->prefix . 'events_personnel'            => ['id'],
-            $wpdb->prefix . 'events_personnel_rel'        => ['id'],
+            $wpdb->prefix.'esp_answer'                  => ['ANS_ID'],
+            $wpdb->prefix.'esp_attendee'                => ['ATT_ID'],
+            $wpdb->prefix.'esp_datetime'                => ['DTT_ID'],
+            $wpdb->prefix.'esp_event_question_group'    => ['EQG_ID'],
+            $wpdb->prefix.'esp_message_template'        => ['MTP_ID'],
+            $wpdb->prefix.'esp_payment'                 => ['PAY_ID'],
+            $wpdb->prefix.'esp_price'                   => ['PRC_ID'],
+            $wpdb->prefix.'esp_price_type'              => ['PRT_ID'],
+            $wpdb->prefix.'esp_question'                => ['QST_ID'],
+            $wpdb->prefix.'esp_question_group'          => ['QSG_ID'],
+            $wpdb->prefix.'esp_question_group_question' => ['QGQ_ID'],
+            $wpdb->prefix.'esp_question_option'         => ['QSO_ID'],
+            $wpdb->prefix.'esp_registration'            => ['REG_ID'],
+            $wpdb->prefix.'esp_status'                  => ['STS_ID'],
+            $wpdb->prefix.'esp_transaction'             => ['TXN_ID'],
+            $wpdb->prefix.'esp_transaction'             => ['TXN_ID'],
+            $wpdb->prefix.'events_detail'               => ['id'],
+            $wpdb->prefix.'events_category_detail'      => ['id'],
+            $wpdb->prefix.'events_category_rel'         => ['id'],
+            $wpdb->prefix.'events_venue'                => ['id'],
+            $wpdb->prefix.'events_venue_rel'            => ['emeta_id'],
+            $wpdb->prefix.'events_locale'               => ['id'],
+            $wpdb->prefix.'events_locale_rel'           => ['id'],
+            $wpdb->prefix.'events_personnel'            => ['id'],
+            $wpdb->prefix.'events_personnel_rel'        => ['id'],
         ];
     }
 
@@ -81,7 +81,7 @@ 
     public static function instance()
     {
         // check if class object is instantiated
-        if (! self::$_instance instanceof EE_CSV) {
+        if ( ! self::$_instance instanceof EE_CSV) {
             self::$_instance = new self();
         }
         return self::$_instance;
@@ -157,24 +157,24 @@ 
             // loop through each column
             for ($i = 0; $i < $columns; $i++) {
                 // replace csv_enclosures with backslashed quotes
-                $data[ $i ] = str_replace('"""', '\\"', $data[ $i ]);
+                $data[$i] = str_replace('"""', '\\"', $data[$i]);
                 // do we need to grab the column names?
                 if ($row === 1) {
                     if ($first_row_is_headers) {
                         // store the column names to use for keys
-                        $column_name = $data[ $i ];
+                        $column_name = $data[$i];
                         // check it's not blank... sometimes CSV editing programs
                         // add a bunch of empty columns onto the end...
-                        if (! $column_name) {
+                        if ( ! $column_name) {
                             continue;
                         }
                         $matches = [];
                         if ($model_name == EE_CSV::metadata_header) {
-                            $headers[ $i ] = $column_name;
+                            $headers[$i] = $column_name;
                         } else {
                             // now get the db table name from it (the part between square brackets)
                             $success = preg_match('~(.*)\[(.*)\]~', $column_name, $matches);
-                            if (! $success) {
+                            if ( ! $success) {
                                 EE_Error::add_error(
                                     sprintf(
                                         esc_html__(
@@ -190,24 +190,24 @@ 
                                 );
                                 return false;
                             }
-                            $headers[ $i ] = $matches[2];
+                            $headers[$i] = $matches[2];
                         }
                     } else {
                         // no column names means our final array will just use counters for keys
-                        $model_entry[ $headers[ $i ] ] = $data[ $i ];
-                        $headers[ $i ]                 = $i;
+                        $model_entry[$headers[$i]] = $data[$i];
+                        $headers[$i]                 = $i;
                     }
                     // and we need to store csv data
                 } else {
                     // this column isn' ta header, store it if there is a header for it
-                    if (isset($headers[ $i ])) {
-                        $model_entry[ $headers[ $i ] ] = $data[ $i ];
+                    if (isset($headers[$i])) {
+                        $model_entry[$headers[$i]] = $data[$i];
                     }
                 }
             }
             // save the row's data IF it's a non-header-row
-            if (! $first_row_is_headers || $row > 1) {
-                $ee_formatted_data[ $model_name ][] = $model_entry;
+            if ( ! $first_row_is_headers || $row > 1) {
+                $ee_formatted_data[$model_name][] = $model_entry;
             }
             // advance to next row
             $row++;
@@ -291,7 +291,7 @@ 
     {
         $fc = "";
         $fh = fopen($file_path, "rb");
-        if (! $fh) {
+        if ( ! $fh) {
             throw new EE_Error(
                 sprintf(
                     esc_html__("Cannot open file for read: %s<br>\n", 'event_espresso'),
@@ -304,7 +304,7 @@ 
         for ($i = 0; $i < $file_length; $i++) {
             $c = substr($bc, $i, 1);
             if ((ord($c) != 0) && (ord($c) != 13)) {
-                $fc = $fc . $c;
+                $fc = $fc.$c;
             }
         }
         if ((ord(substr($fc, 0, 1)) == 255) && (ord(substr($fc, 1, 1)) == 254)) {
@@ -384,7 +384,7 @@ 
         // header("Content-Type: application/force-download");
         // header("Content-Type: application/octet-stream");
         // header("Content-Type: application/download");
-        header('Content-disposition: attachment; filename=' . $filename);
+        header('Content-disposition: attachment; filename='.$filename);
         header("Content-Type: text/csv; charset=utf-8");
         do_action('AHEE__EE_CSV__begin_sending_csv__headers');
         echo apply_filters(
@@ -416,7 +416,7 @@ 
             $this->fputcsv2($file_handle, ['MODEL', $model_name]);
             // if we have items to put in the CSV, do it normally
 
-            if (! empty($model_instance_arrays)) {
+            if ( ! empty($model_instance_arrays)) {
                 $this->write_data_array_to_csv($file_handle, $model_instance_arrays);
             } else {
                 // echo "no data to write... so just write the headers";
@@ -425,7 +425,7 @@ 
                 $model        = EE_Registry::instance()->load_model($model_name);
                 $column_names = [];
                 foreach ($model->field_settings() as $field) {
-                    $column_names[ $field->get_nicename() . "[" . $field->get_name() . "]" ] = null;
+                    $column_names[$field->get_nicename()."[".$field->get_name()."]"] = null;
                 }
                 $this->write_data_array_to_csv($file_handle, [$column_names]);
             }
@@ -443,7 +443,7 @@ 
      */
     public function write_metadata_to_csv($file_handle)
     {
-        $data_row = [EE_CSV::metadata_header];// do NOT translate because this exact string is used when importing
+        $data_row = [EE_CSV::metadata_header]; // do NOT translate because this exact string is used when importing
         $this->fputcsv2($file_handle, $data_row);
         $meta_data = [
             0 => [
@@ -487,11 +487,11 @@ 
             }
 
             $output[] = preg_match("/(?:${delimiter_esc}|${enclosure_esc}|\s)/", $field_value)
-                ? ($enclosure . str_replace($enclosure, $enclosure . $enclosure, $field_value) . $enclosure)
+                ? ($enclosure.str_replace($enclosure, $enclosure.$enclosure, $field_value).$enclosure)
                 : $field_value;
         }
 
-        fwrite($fh, join($delimiter, $output) . PHP_EOL);
+        fwrite($fh, join($delimiter, $output).PHP_EOL);
     }
 
 
@@ -565,12 +565,12 @@ 
     public function export_array_to_csv($data = false, $filename = false)
     {
         // no data file?? get outta here
-        if (! $data or ! is_array($data) or empty($data)) {
+        if ( ! $data or ! is_array($data) or empty($data)) {
             return false;
         }
 
         // no filename?? get outta here
-        if (! $filename) {
+        if ( ! $filename) {
             return false;
         }
         $fh = $this->begin_sending_csv($filename);

core/db_classes/EE_Country.class.php

Indentation +132 added lines, -132 removed lines

@@ -10,136 +10,136 @@
 class EE_Country extends EE_Base_Class
 {
 
-    /**
-     * @param array $props_n_values
-     * @return EE_Country|mixed
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function new_instance($props_n_values = [])
-    {
-        $has_object = parent::_check_for_object($props_n_values, __CLASS__);
-        return $has_object ? $has_object : new self($props_n_values);
-    }
-
-
-    /**
-     * @param array $props_n_values
-     * @return EE_Country
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function new_instance_from_db($props_n_values = [])
-    {
-        return new self($props_n_values, true);
-    }
-
-
-    /**
-     * Gets the country name
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function name()
-    {
-        return $this->get('CNT_name');
-    }
-
-
-    /**
-     * gets the country's currency code
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function currency_code()
-    {
-        return $this->get('CNT_cur_code');
-    }
-
-
-    /**
-     * gets the country's currency sign/symbol
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function currency_sign()
-    {
-        $CNT_cur_sign = $this->get('CNT_cur_sign');
-        return $CNT_cur_sign ? $CNT_cur_sign : '';
-    }
-
-
-    /**
-     * Currency name singular
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function currency_name_single()
-    {
-        return $this->get('CNT_cur_single');
-    }
-
-
-    /**
-     * Currency name plural
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function currency_name_plural()
-    {
-        return $this->get('CNT_cur_plural');
-    }
-
-
-    /**
-     * currency_sign_before - ie: $TRUE  or  FALSE$
-     *
-     * @return boolean
-     * @throws EE_Error
-     */
-    public function currency_sign_before()
-    {
-        return $this->get('CNT_cur_sign_b4');
-    }
-
-
-    /**
-     * currency_decimal_places : 2 = 0.00   3 = 0.000
-     *
-     * @return integer
-     * @throws EE_Error
-     */
-    public function currency_decimal_places()
-    {
-        return $this->get('CNT_cur_dec_plc');
-    }
-
-
-    /**
-     * currency_decimal_mark :   (comma) ',' = 0,01   or   (decimal) '.' = 0.01
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function currency_decimal_mark()
-    {
-        return $this->get('CNT_cur_dec_mrk');
-    }
-
-
-    /**
-     * currency thousands separator:   (comma) ',' = 1,000   or   (decimal) '.' = 1.000
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function currency_thousands_separator()
-    {
-        return $this->get('CNT_cur_thsnds');
-    }
+	/**
+	 * @param array $props_n_values
+	 * @return EE_Country|mixed
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function new_instance($props_n_values = [])
+	{
+		$has_object = parent::_check_for_object($props_n_values, __CLASS__);
+		return $has_object ? $has_object : new self($props_n_values);
+	}
+
+
+	/**
+	 * @param array $props_n_values
+	 * @return EE_Country
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function new_instance_from_db($props_n_values = [])
+	{
+		return new self($props_n_values, true);
+	}
+
+
+	/**
+	 * Gets the country name
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function name()
+	{
+		return $this->get('CNT_name');
+	}
+
+
+	/**
+	 * gets the country's currency code
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function currency_code()
+	{
+		return $this->get('CNT_cur_code');
+	}
+
+
+	/**
+	 * gets the country's currency sign/symbol
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function currency_sign()
+	{
+		$CNT_cur_sign = $this->get('CNT_cur_sign');
+		return $CNT_cur_sign ? $CNT_cur_sign : '';
+	}
+
+
+	/**
+	 * Currency name singular
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function currency_name_single()
+	{
+		return $this->get('CNT_cur_single');
+	}
+
+
+	/**
+	 * Currency name plural
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function currency_name_plural()
+	{
+		return $this->get('CNT_cur_plural');
+	}
+
+
+	/**
+	 * currency_sign_before - ie: $TRUE  or  FALSE$
+	 *
+	 * @return boolean
+	 * @throws EE_Error
+	 */
+	public function currency_sign_before()
+	{
+		return $this->get('CNT_cur_sign_b4');
+	}
+
+
+	/**
+	 * currency_decimal_places : 2 = 0.00   3 = 0.000
+	 *
+	 * @return integer
+	 * @throws EE_Error
+	 */
+	public function currency_decimal_places()
+	{
+		return $this->get('CNT_cur_dec_plc');
+	}
+
+
+	/**
+	 * currency_decimal_mark :   (comma) ',' = 0,01   or   (decimal) '.' = 0.01
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function currency_decimal_mark()
+	{
+		return $this->get('CNT_cur_dec_mrk');
+	}
+
+
+	/**
+	 * currency thousands separator:   (comma) ',' = 1,000   or   (decimal) '.' = 1.000
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function currency_thousands_separator()
+	{
+		return $this->get('CNT_cur_thsnds');
+	}
 }

core/db_classes/EE_Change_Log.class.php

Spacing +1 added lines, -1 removed lines

@@ -176,7 +176,7 @@
     {
         $model_name_of_related_obj = $this->OBJ_type();
         $is_model_name             = EE_Registry::instance()->is_model_name($model_name_of_related_obj);
-        if (! $is_model_name) {
+        if ( ! $is_model_name) {
             return null;
         }
         return $this->get_first_related($model_name_of_related_obj);

Indentation +236 added lines, -236 removed lines

@@ -10,240 +10,240 @@
 class EE_Change_Log extends EE_Base_Class
 {
 
-    /**
-     * @param array  $props_n_values    incoming values
-     * @param string $timezone          incoming timezone
-     *                                  If not set the timezone for the website will be used.
-     * @param array  $date_formats      incoming date_formats in an array where the first value is the
-     *                                  date_format and the second value is the time format
-     * @return EE_Change_Log
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function new_instance($props_n_values = [], $timezone = '', $date_formats = [])
-    {
-        $has_object = parent::_check_for_object($props_n_values, __CLASS__, $timezone, $date_formats);
-        return $has_object ? $has_object : new self($props_n_values, false, $timezone, $date_formats);
-    }
-
-
-    /**
-     * @param array  $props_n_values  incoming values from the database
-     * @param string $timezone        incoming timezone as set by the model.
-     *                                If not set the timezone for the website will be used.
-     * @return EE_Change_Log
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function new_instance_from_db($props_n_values = [], $timezone = '')
-    {
-        return new self($props_n_values, true, $timezone);
-    }
-
-
-    /**
-     * Gets message
-     *
-     * @return mixed
-     * @throws EE_Error
-     */
-    public function message()
-    {
-        return $this->get('LOG_message');
-    }
-
-
-    /**
-     * Sets message
-     *
-     * @param mixed $message
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_message($message)
-    {
-        $this->set('LOG_message', $message);
-    }
-
-
-    /**
-     * Gets time
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function time()
-    {
-        return $this->get('LOG_time');
-    }
-
-
-    /**
-     * Sets time
-     *
-     * @param string $time
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_time($time)
-    {
-        $this->set('LOG_time', $time);
-    }
-
-
-    /**
-     * Return the localized log type label.
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function log_type_label()
-    {
-        return EEM_Change_Log::get_pretty_label_for_type($this->log_type());
-    }
-
-
-    /**
-     * Gets log_type
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function log_type()
-    {
-        return $this->get('LOG_type');
-    }
-
-
-    /**
-     * Sets log_type
-     *
-     * @param string $log_type
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_log_type($log_type)
-    {
-        $this->set('LOG_type', $log_type);
-    }
-
-
-    /**
-     * Gets OBJ_ID (the ID of the item related to this log)
-     *
-     * @return mixed
-     * @throws EE_Error
-     */
-    public function OBJ_ID()
-    {
-        return $this->get('OBJ_ID');
-    }
-
-
-    /**
-     * Gets wp_user
-     *
-     * @return int
-     * @throws EE_Error
-     */
-    public function wp_user()
-    {
-        return $this->get('LOG_wp_user');
-    }
-
-
-    /**
-     * Sets wp_user
-     *
-     * @param int $wp_user_id
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_wp_user($wp_user_id)
-    {
-        $this->set('LOG_wp_user', $wp_user_id);
-    }
-
-
-    /**
-     * Gets the model object attached to this log
-     *
-     * @return EE_Base_Class
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function object()
-    {
-        $model_name_of_related_obj = $this->OBJ_type();
-        $is_model_name             = EE_Registry::instance()->is_model_name($model_name_of_related_obj);
-        if (! $is_model_name) {
-            return null;
-        }
-        return $this->get_first_related($model_name_of_related_obj);
-    }
-
-
-    /**
-     * Gets type of the model object related to this log
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function OBJ_type()
-    {
-        return $this->get('OBJ_type');
-    }
-
-
-    /**
-     * Shorthand for setting the OBJ_ID and OBJ_type. Slightly handier than using
-     * _add_relation_to because you don't have to specify what type of model you're
-     * associating it with
-     *
-     * @param EE_Base_Class $object
-     * @param boolean       $save
-     * @return bool if $save=true, NULL is $save=false
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_object($object, $save = true)
-    {
-        if ($object instanceof EE_Base_Class) {
-            $this->set_OBJ_type($object->get_model()->get_this_model_name());
-            $this->set_OBJ_ID($object->ID());
-        } else {
-            $this->set_OBJ_type(null);
-            $this->set_OBJ_ID(null);
-        }
-        if ($save) {
-            return $this->save();
-        }
-        return null;
-    }
-
-
-    /**
-     * Sets type
-     *
-     * @param string $type
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_OBJ_type($type)
-    {
-        $this->set('OBJ_type', $type);
-    }
-
-
-    /**
-     * Sets OBJ_ID
-     *
-     * @param mixed $OBJ_ID
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function set_OBJ_ID($OBJ_ID)
-    {
-        $this->set('OBJ_ID', $OBJ_ID);
-    }
+	/**
+	 * @param array  $props_n_values    incoming values
+	 * @param string $timezone          incoming timezone
+	 *                                  If not set the timezone for the website will be used.
+	 * @param array  $date_formats      incoming date_formats in an array where the first value is the
+	 *                                  date_format and the second value is the time format
+	 * @return EE_Change_Log
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function new_instance($props_n_values = [], $timezone = '', $date_formats = [])
+	{
+		$has_object = parent::_check_for_object($props_n_values, __CLASS__, $timezone, $date_formats);
+		return $has_object ? $has_object : new self($props_n_values, false, $timezone, $date_formats);
+	}
+
+
+	/**
+	 * @param array  $props_n_values  incoming values from the database
+	 * @param string $timezone        incoming timezone as set by the model.
+	 *                                If not set the timezone for the website will be used.
+	 * @return EE_Change_Log
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function new_instance_from_db($props_n_values = [], $timezone = '')
+	{
+		return new self($props_n_values, true, $timezone);
+	}
+
+
+	/**
+	 * Gets message
+	 *
+	 * @return mixed
+	 * @throws EE_Error
+	 */
+	public function message()
+	{
+		return $this->get('LOG_message');
+	}
+
+
+	/**
+	 * Sets message
+	 *
+	 * @param mixed $message
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_message($message)
+	{
+		$this->set('LOG_message', $message);
+	}
+
+
+	/**
+	 * Gets time
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function time()
+	{
+		return $this->get('LOG_time');
+	}
+
+
+	/**
+	 * Sets time
+	 *
+	 * @param string $time
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_time($time)
+	{
+		$this->set('LOG_time', $time);
+	}
+
+
+	/**
+	 * Return the localized log type label.
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function log_type_label()
+	{
+		return EEM_Change_Log::get_pretty_label_for_type($this->log_type());
+	}
+
+
+	/**
+	 * Gets log_type
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function log_type()
+	{
+		return $this->get('LOG_type');
+	}
+
+
+	/**
+	 * Sets log_type
+	 *
+	 * @param string $log_type
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_log_type($log_type)
+	{
+		$this->set('LOG_type', $log_type);
+	}
+
+
+	/**
+	 * Gets OBJ_ID (the ID of the item related to this log)
+	 *
+	 * @return mixed
+	 * @throws EE_Error
+	 */
+	public function OBJ_ID()
+	{
+		return $this->get('OBJ_ID');
+	}
+
+
+	/**
+	 * Gets wp_user
+	 *
+	 * @return int
+	 * @throws EE_Error
+	 */
+	public function wp_user()
+	{
+		return $this->get('LOG_wp_user');
+	}
+
+
+	/**
+	 * Sets wp_user
+	 *
+	 * @param int $wp_user_id
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_wp_user($wp_user_id)
+	{
+		$this->set('LOG_wp_user', $wp_user_id);
+	}
+
+
+	/**
+	 * Gets the model object attached to this log
+	 *
+	 * @return EE_Base_Class
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function object()
+	{
+		$model_name_of_related_obj = $this->OBJ_type();
+		$is_model_name             = EE_Registry::instance()->is_model_name($model_name_of_related_obj);
+		if (! $is_model_name) {
+			return null;
+		}
+		return $this->get_first_related($model_name_of_related_obj);
+	}
+
+
+	/**
+	 * Gets type of the model object related to this log
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function OBJ_type()
+	{
+		return $this->get('OBJ_type');
+	}
+
+
+	/**
+	 * Shorthand for setting the OBJ_ID and OBJ_type. Slightly handier than using
+	 * _add_relation_to because you don't have to specify what type of model you're
+	 * associating it with
+	 *
+	 * @param EE_Base_Class $object
+	 * @param boolean       $save
+	 * @return bool if $save=true, NULL is $save=false
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_object($object, $save = true)
+	{
+		if ($object instanceof EE_Base_Class) {
+			$this->set_OBJ_type($object->get_model()->get_this_model_name());
+			$this->set_OBJ_ID($object->ID());
+		} else {
+			$this->set_OBJ_type(null);
+			$this->set_OBJ_ID(null);
+		}
+		if ($save) {
+			return $this->save();
+		}
+		return null;
+	}
+
+
+	/**
+	 * Sets type
+	 *
+	 * @param string $type
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_OBJ_type($type)
+	{
+		$this->set('OBJ_type', $type);
+	}
+
+
+	/**
+	 * Sets OBJ_ID
+	 *
+	 * @param mixed $OBJ_ID
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function set_OBJ_ID($OBJ_ID)
+	{
+		$this->set('OBJ_ID', $OBJ_ID);
+	}
 }

core/db_classes/EE_Base_Class.class.php

Doc Comments +9 added lines, -9 removed lines

@@ -421,7 +421,7 @@ 
      * If a model name is provided (eg Registration), gets the model classname for that model.
      * Also works if a model class's classname is provided (eg EE_Registration).
      *
-     * @param null $model_name
+     * @param string $model_name
      * @return string like EEM_Attendee
      */
     private static function _get_model_classname($model_name = null)
@@ -602,7 +602,7 @@ 
      *
      * @param EE_Datetime_Field $datetime_field
      * @param bool              $pretty
-     * @param null              $date_or_time
+     * @param string|null              $date_or_time
      * @return void
      * @throws InvalidArgumentException
      * @throws InvalidInterfaceException
@@ -1541,7 +1541,7 @@ 
      *
      * @param bool $full           if true (default), then return the full format.  Otherwise will return an array
      *                             where the first value is the date format and the second value is the time format.
-     * @return mixed string|array
+     * @return string string|array
      */
     public function get_format($full = true)
     {
@@ -1665,7 +1665,7 @@ 
      *
      * @param null  $field_to_order_by  What field is being used as the reference point.
      * @param array $query_params       Any additional conditions on the query.
-     * @param null  $columns_to_select  If left null, then an array of EE_Base_Class objects is returned, otherwise
+     * @param string  $columns_to_select  If left null, then an array of EE_Base_Class objects is returned, otherwise
      *                                  you can indicate just the columns you want returned
      * @return array|EE_Base_Class
      * @throws ReflectionException
@@ -1693,7 +1693,7 @@ 
      *
      * @param null  $field_to_order_by  What field is being used as the reference point.
      * @param array $query_params       Any additional conditions on the query.
-     * @param null  $columns_to_select  If left null, then an EE_Base_Class object is returned, otherwise
+     * @param string  $columns_to_select  If left null, then an EE_Base_Class object is returned, otherwise
      *                                  you can indicate just the column you want returned
      * @return array|EE_Base_Class
      * @throws ReflectionException
@@ -2144,7 +2144,7 @@ 
      * Deletes this model object permanently from db
      * (but keep in mind related models may block the delete and return an error)
      *
-     * @return bool | int
+     * @return integer | int
      * @throws ReflectionException
      * @throws InvalidArgumentException
      * @throws InvalidInterfaceException
@@ -2576,7 +2576,7 @@ 
      * @param string $field_to_sum  name of field to count by.
      *                              By default, uses primary key
      *                              (which doesn't make much sense, so you should probably change it)
-     * @return int
+     * @return double
      * @throws ReflectionException
      * @throws InvalidArgumentException
      * @throws InvalidInterfaceException
@@ -3211,7 +3211,7 @@ 
     /**
      * sets the time on a datetime property
      *
-     * @param string|Datetime $time       a valid time string for php datetime functions (or DateTime object)
+     * @param string $time       a valid time string for php datetime functions (or DateTime object)
      * @param string          $field_name the name of the field the time is being set on (must match a
      *                                    EE_Datetime_Field)
      * @throws InvalidArgumentException
@@ -3304,7 +3304,7 @@ 
     /**
      * sets the date on a datetime property
      *
-     * @param string|DateTime $date       a valid date string for php datetime functions ( or DateTime object)
+     * @param string $date       a valid date string for php datetime functions ( or DateTime object)
      * @param string          $field_name the name of the field the date is being set on (must match a
      *                                    EE_Datetime_Field)
      * @throws InvalidArgumentException

Indentation +3376 added lines, -3376 removed lines

@@ -13,3392 +13,3392 @@
 abstract class EE_Base_Class
 {
 
-    /**
-     * @var boolean indicating whether or not this model object is intended to ever be saved
-     * For example, we might create model objects intended to only be used for the duration
-     * of this request and to be thrown away, and if they were accidentally saved
-     * it would be a bug.
-     */
-    protected $_allow_persist = true;
-
-    /**
-     * This property is for holding a cached array of object properties indexed by property name as the key.
-     * The purpose of this is for setting a cache on properties that may have calculated values after a
-     * prepare_for_get.  That way the cache can be checked first and the calculated property returned instead of having
-     * to recalculate. Used by _set_cached_property() and _get_cached_property() methods.
-     *
-     * @var array
-     */
-    protected $_cached_properties = [];
-
-    /**
-     * This is a cache of results from custom selections done on a query that constructs this entity. The only purpose
-     * for these values is for retrieval of the results, they are not further queryable and they are not persisted to
-     * the db.  They also do not automatically update if there are any changes to the data that produced their results.
-     * The format is a simple array of field_alias => field_value.  So for instance if a custom select was something
-     * like,  "Select COUNT(Registration.REG_ID) as Registration_Count ...", then the resulting value will be in this
-     * array as:
-     * array(
-     *  'Registration_Count' => 24
-     * );
-     * Note: if the custom select configuration for the query included a data type, the value will be in the data type
-     * provided for the query (@see EventEspresso\core\domain\values\model\CustomSelects::__construct phpdocs for more
-     * info)
-     *
-     * @var array
-     */
-    protected $custom_selection_results = [];
-
-    /**
-     * date format
-     * pattern or format for displaying dates
-     *
-     * @var string $_dt_frmt
-     */
-    protected $_dt_frmt;
-
-    /**
-     * Array where keys are field names (see the model's _fields property) and values are their values. To see what
-     * their types should be, look at what that field object returns on its prepare_for_get and prepare_for_set methods)
-     *
-     * @var array
-     */
-    protected $_fields = [];
-
-    /**
-     * @var boolean indicating whether or not this model object's properties have changed since construction
-     */
-    protected $_has_changes = false;
-
-    /**
-     * @var EEM_Base
-     */
-    protected $_model;
-
-
-    /**
-     * An array containing keys of the related model, and values are either an array of related mode objects or a
-     * single
-     * related model object. see the model's _model_relations. The keys should match those specified. And if the
-     * relation is of type EE_Belongs_To (or one of its children), then there should only be ONE related model object,
-     * all others have an array)
-     *
-     * @var array
-     */
-    protected $_model_relations = [];
-
-    /**
-     * This is an array of the original properties and values provided during construction
-     * of this model object. (keys are model field names, values are their values).
-     * This list is important to remember so that when we are merging data from the db, we know
-     * which values to override and which to not override.
-     *
-     * @var array
-     */
-    protected $_props_n_values_provided_in_constructor;
-
-    /**
-     * Timezone
-     * This gets set by the "set_timezone()" method so that we know what timezone incoming strings|timestamps are in.
-     * This can also be used before a get to set what timezone you want strings coming out of the object to be in.  NOT
-     * all EE_Base_Class child classes use this property but any that use a EE_Datetime_Field data type will have
-     * access to it.
-     *
-     * @var string
-     */
-    protected $_timezone = '';
-
-    /**
-     * time format
-     * pattern or format for displaying time
-     *
-     * @var string $_tm_frmt
-     */
-    protected $_tm_frmt;
-
-
-    /**
-     * basic constructor for Event Espresso classes, performs any necessary initialization, and verifies it's children
-     * play nice
-     *
-     * @param array   $field_values                            where each key is a field (ie, array key in the 2nd
-     *                                                         layer of the model's _fields array, (eg, EVT_ID,
-     *                                                         TXN_amount, QST_name, etc) and values are their values
-     * @param boolean $set_from_db                             a flag for setting if the class is instantiated by the
-     *                                                         corresponding db model or not.
-     * @param string  $timezone                                indicate what timezone you want any datetime fields to
-     *                                                         be in when instantiating a EE_Base_Class object.
-     * @param array   $date_formats                            An array of date formats to set on construct where first
-     *                                                         value is the date_format and second value is the time
-     *                                                         format.
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    protected function __construct($field_values = [], $set_from_db = false, $timezone = '', $date_formats = [])
-    {
-        // ensure $fieldValues is an array
-        $field_values = is_array($field_values) ? $field_values : [$field_values];
-        $className    = get_class($this);
-        do_action("AHEE__{$className}__construct", $this, $field_values);
-        // remember what values were passed to this constructor
-        $this->_props_n_values_provided_in_constructor = $field_values;
-        $this->setDateAndTimeFormats($date_formats);
-        $this->_model = $this->get_model($timezone);
-        $model_fields = $this->_model->field_settings();
-        $this->validateFieldValues($model_fields, $field_values);
-        $this->setFieldValues($model_fields, $set_from_db);
-        // remember in entity mapper
-        if (! $set_from_db && $this->_model->has_primary_key_field() && $this->ID()) {
-            $this->_model->add_to_entity_map($this);
-        }
-        // setup all the relations
-        foreach ($this->_model->relation_settings() as $relation_name => $relation_obj) {
-            $this->_model_relations[ $relation_name ] = $relation_obj instanceof EE_Belongs_To_Relation
-                ? null
-                : [];
-        }
-        /**
-         * Action done at the end of each model object construction
-         *
-         * @param EE_Base_Class $this the model object just created
-         */
-        do_action('AHEE__EE_Base_Class__construct__finished', $this);
-    }
-
-
-    /**
-     * for getting a model while instantiated.
-     *
-     * @param string|null $timezone
-     * @return EEM_Base | EEM_CPT_Base
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function get_model($timezone = '')
-    {
-        if (! $this->_model) {
-            $timezone     = $timezone ? $timezone : $this->_timezone;
-            $modelName    = self::_get_model_classname(get_class($this));
-            $this->_model = self::_get_model_instance_with_name($modelName, $timezone);
-            $this->set_timezone($timezone);
-        }
-        return $this->_model;
-    }
-
-
-    /**
-     * Overrides parent because parent expects old models.
-     * This also doesn't do any validation, and won't work for serialized arrays
-     *
-     * @param string $field_name
-     * @param mixed  $field_value_from_db
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function set_from_db($field_name, $field_value_from_db)
-    {
-        $field_obj = $this->_model->field_settings_for($field_name);
-        if ($field_obj instanceof EE_Model_Field_Base) {
-            // you would think the DB has no NULLs for non-null label fields right? wrong!
-            // eg, a CPT model object could have an entry in the posts table, but no
-            // entry in the meta table. Meaning that all its columns in the meta table
-            // are null! yikes! so when we find one like that, use defaults for its meta columns
-            if ($field_value_from_db === null) {
-                if ($field_obj->is_nullable()) {
-                    // if the field allows nulls, then let it be null
-                    $field_value = null;
-                } else {
-                    $field_value = $field_obj->get_default_value();
-                }
-            } else {
-                $field_value = $field_obj->prepare_for_set_from_db($field_value_from_db);
-            }
-            $this->_fields[ $field_name ] = $field_value;
-            $this->_clear_cached_property($field_name);
-        }
-    }
-
-
-    /**
-     * Overrides parent because parent expects old models.
-     * This also doesn't do any validation, and won't work for serialized arrays
-     *
-     * @param string $field_name
-     * @param mixed  $field_value
-     * @param bool   $use_default
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws ReflectionException
-     * @throws ReflectionException
-     */
-    public function set($field_name, $field_value, $use_default = false)
-    {
-        // if not using default and nothing has changed, and object has already been setup (has ID),
-        // then don't do anything
-        if (
-            ! $use_default
-            && $this->_fields[ $field_name ] === $field_value
-            && $this->ID()
-        ) {
-            return;
-        }
-        $this->_has_changes = true;
-        $field_obj          = $this->_model->field_settings_for($field_name);
-        if ($field_obj instanceof EE_Model_Field_Base) {
-            if ($field_obj instanceof EE_Datetime_Field) {
-                $field_obj->set_timezone($this->_timezone);
-                $field_obj->set_date_format($this->_dt_frmt);
-                $field_obj->set_time_format($this->_tm_frmt);
-            }
-            $holder_of_value = $field_obj->prepare_for_set($field_value);
-            // should the value be null?
-            if (($field_value === null || $holder_of_value === null || $holder_of_value === '') && $use_default) {
-                $this->_fields[ $field_name ] = $field_obj->get_default_value();
-                /**
-                 * To save having to refactor all the models, if a default value is used for a
-                 * EE_Datetime_Field, and that value is not null nor is it a DateTime
-                 * object.  Then let's do a set again to ensure that it becomes a DateTime
-                 * object.
-                 *
-                 * @since 4.6.10+
-                 */
-                if (
-                    $field_obj instanceof EE_Datetime_Field
-                    && $this->_fields[ $field_name ] !== null
-                    && ! $this->_fields[ $field_name ] instanceof DateTime
-                ) {
-                    empty($this->_fields[ $field_name ])
-                        ? $this->set($field_name, time())
-                        : $this->set($field_name, $this->_fields[ $field_name ]);
-                }
-            } else {
-                $this->_fields[ $field_name ] = $holder_of_value;
-            }
-            // if we're not in the constructor...
-            // now check if what we set was a primary key
-            if (
-                // note: props_n_values_provided_in_constructor is only set at the END of the constructor
-                $this->_props_n_values_provided_in_constructor
-                && $field_value
-                && $field_name === $this->_model->primary_key_name()
-            ) {
-                // if so, we want all this object's fields to be filled either with
-                // what we've explicitly set on this model
-                // or what we have in the db
-                // echo "setting primary key!";
-                $fields_on_model = self::_get_model(get_class($this))->field_settings();
-                $obj_in_db       = self::_get_model(get_class($this))->get_one_by_ID($field_value);
-                foreach ($fields_on_model as $field_obj) {
-                    if (
-                        ! array_key_exists($field_obj->get_name(), $this->_props_n_values_provided_in_constructor)
-                        && $field_obj->get_name() !== $field_name
-                    ) {
-                        $this->set($field_obj->get_name(), $obj_in_db->get($field_obj->get_name()));
-                    }
-                }
-                // oh this model object has an ID? well make sure its in the entity mapper
-                $this->_model->add_to_entity_map($this);
-            }
-            // let's unset any cache for this field_name from the $_cached_properties property.
-            $this->_clear_cached_property($field_name);
-        } else {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__(
-                        'A valid EE_Model_Field_Base could not be found for the given field name: %s',
-                        'event_espresso'
-                    ),
-                    $field_name
-                )
-            );
-        }
-    }
-
-
-    /**
-     * Gets the value of the primary key.
-     * If the object hasn't yet been saved, it should be whatever the model field's default was
-     * (eg, if this were the EE_Event class, look at the primary key field on EEM_Event and see what its default value
-     * is. Usually defaults for integer primary keys are 0; string primary keys are usually NULL).
-     *
-     * @return mixed, if the primary key is of type INT it'll be an int. Otherwise it could be a string
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function ID()
-    {
-        // now that we know the name of the variable, use a variable variable to get its value and return its
-        if ($this->_model->has_primary_key_field()) {
-            return $this->_fields[ $this->_model->primary_key_name() ];
-        }
-        return $this->_model->get_index_primary_key_string($this->_fields);
-    }
-
-
-    /**
-     * If a model name is provided (eg Registration), gets the model classname for that model.
-     * Also works if a model class's classname is provided (eg EE_Registration).
-     *
-     * @param null $model_name
-     * @return string like EEM_Attendee
-     */
-    private static function _get_model_classname($model_name = null)
-    {
-        return strpos($model_name, 'EE_') === 0
-            ? str_replace('EE_', 'EEM_', $model_name)
-            : 'EEM_' . $model_name;
-    }
-
-
-    /**
-     * Gets the model instance (eg instance of EEM_Attendee) given its classname (eg EE_Attendee)
-     *
-     * @param string $model_classname
-     * @param string $timezone
-     * @return EEM_Base
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    protected static function _get_model_instance_with_name($model_classname, $timezone = '')
-    {
-        $model_classname = str_replace('EEM_', '', $model_classname);
-        $model           = EE_Registry::instance()->load_model($model_classname);
-        $model->set_timezone($timezone);
-        return $model;
-    }
-
-
-    /**
-     * This just clears out ONE property if it exists in the cache
-     *
-     * @param string $property_name the property to remove if it exists (from the _cached_properties array)
-     * @return void
-     */
-    protected function _clear_cached_property($property_name)
-    {
-        unset($this->_cached_properties[ $property_name ]);
-    }
-
-
-    /**
-     * Gets the EEM_*_Model for this class
-     *
-     * @param string $classname
-     * @param string $timezone
-     * @return EEM_Base
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    protected static function _get_model($classname, $timezone = '')
-    {
-        // find model for this class
-        if (! $classname) {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__(
-                        'What were you thinking calling _get_model(%s)?? You need to specify the class name',
-                        'event_espresso'
-                    ),
-                    $classname
-                )
-            );
-        }
-        $modelName = self::_get_model_classname($classname);
-        return self::_get_model_instance_with_name($modelName, $timezone);
-    }
-
-
-    /**
-     * verifies that the specified field is of the correct type
-     *
-     * @param string $field_name
-     * @param string $extra_cache_ref This allows the user to specify an extra cache ref for the given property
-     *                                (in cases where the same property may be used for different outputs
-     *                                - i.e. datetime, money etc.)
-     * @return mixed
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function get($field_name, $extra_cache_ref = null)
-    {
-        return $this->_get_cached_property($field_name, false, $extra_cache_ref);
-    }
-
-
-    /**
-     * This returns the value cached property if it exists OR the actual property value if the cache doesn't exist.
-     * This also SETS the cache if we return the actual property!
-     *
-     * @param string $field_name       the name of the property we're trying to retrieve
-     * @param bool   $pretty
-     * @param string $extra_cache_ref  This allows the user to specify an extra cache ref for the given property
-     *                                 (in cases where the same property may be used for different outputs
-     *                                 - i.e. datetime, money etc.)
-     *                                 It can also accept certain pre-defined "schema" strings
-     *                                 to define how to output the property.
-     *                                 see the field's prepare_for_pretty_echoing for what strings can be used
-     * @return mixed                   whatever the value for the property is we're retrieving
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    protected function _get_cached_property($field_name, $pretty = false, $extra_cache_ref = null)
-    {
-        // verify the field exists
-        $this->_model->field_settings_for($field_name);
-        $cache_type = $pretty ? 'pretty' : 'standard';
-        $cache_type .= ! empty($extra_cache_ref) ? '_' . $extra_cache_ref : '';
-        if (isset($this->_cached_properties[ $field_name ][ $cache_type ])) {
-            return $this->_cached_properties[ $field_name ][ $cache_type ];
-        }
-        $value = $this->_get_fresh_property($field_name, $pretty, $extra_cache_ref);
-        $this->_set_cached_property($field_name, $value, $cache_type);
-        return $value;
-    }
-
-
-    /**
-     * If the cache didn't fetch the needed item, this fetches it.
-     *
-     * @param string $field_name
-     * @param bool   $pretty
-     * @param string $extra_cache_ref
-     * @return mixed
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    protected function _get_fresh_property($field_name, $pretty = false, $extra_cache_ref = null)
-    {
-        $field_obj = $this->_model->field_settings_for($field_name);
-        // If this is an EE_Datetime_Field we need to make sure timezone, formats, and output are correct
-        if ($field_obj instanceof EE_Datetime_Field) {
-            $this->_prepare_datetime_field($field_obj, $pretty, $extra_cache_ref);
-        }
-        if (! isset($this->_fields[ $field_name ])) {
-            $this->_fields[ $field_name ] = null;
-        }
-        return $pretty
-            ? $field_obj->prepare_for_pretty_echoing($this->_fields[ $field_name ], $extra_cache_ref)
-            : $field_obj->prepare_for_get($this->_fields[ $field_name ]);
-    }
-
-
-    /**
-     * For adding an item to the cached_properties property.
-     *
-     * @param string      $field_name the property item the corresponding value is for.
-     * @param mixed       $value      The value we are caching.
-     * @param string|null $cache_type
-     * @return void
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    protected function _set_cached_property($field_name, $value, $cache_type = null)
-    {
-        // first make sure this property exists
-        $this->_model->field_settings_for($field_name);
-        $cache_type = empty($cache_type) ? 'standard' : $cache_type;
-        $this->_cached_properties[ $field_name ][ $cache_type ] = $value;
-    }
-
-
-    /**
-     * set timezone, formats, and output for EE_Datetime_Field objects
-     *
-     * @param EE_Datetime_Field $datetime_field
-     * @param bool              $pretty
-     * @param null              $date_or_time
-     * @return void
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     */
-    protected function _prepare_datetime_field(
-        EE_Datetime_Field $datetime_field,
-        $pretty = false,
-        $date_or_time = null
-    ) {
-        $datetime_field->set_timezone($this->_timezone);
-        $datetime_field->set_date_format($this->_dt_frmt, $pretty);
-        $datetime_field->set_time_format($this->_tm_frmt, $pretty);
-        // set the output returned
-        switch ($date_or_time) {
-            case 'D':
-                $datetime_field->set_date_time_output('date');
-                break;
-            case 'T':
-                $datetime_field->set_date_time_output('time');
-                break;
-            default:
-                $datetime_field->set_date_time_output();
-        }
-    }
-
-
-    /**
-     * @param $props_n_values
-     * @param $classname
-     * @return mixed bool|EE_Base_Class|EEM_CPT_Base
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    protected static function _get_object_from_entity_mapper($props_n_values, $classname)
-    {
-        // TODO: will not work for Term_Relationships because they have no PK!
-        $primary_id_ref = self::_get_primary_key_name($classname);
-        if (
-            array_key_exists($primary_id_ref, $props_n_values)
-            && ! empty($props_n_values[ $primary_id_ref ])
-        ) {
-            $id = $props_n_values[ $primary_id_ref ];
-            return self::_get_model($classname)->get_from_entity_map($id);
-        }
-        return false;
-    }
-
-
-    /**
-     * returns the name of the primary key attribute
-     *
-     * @param null $classname
-     * @return string
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws ReflectionException
-     * @throws ReflectionException
-     */
-    protected static function _get_primary_key_name($classname = null)
-    {
-        if (! $classname) {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__('What were you thinking calling _get_primary_key_name(%s)', 'event_espresso'),
-                    $classname
-                )
-            );
-        }
-        return self::_get_model($classname)->get_primary_key_field()->get_name();
-    }
-
-
-    /**
-     * This is called by child static "new_instance" method and we'll check to see if there is an existing db entry for
-     * the primary key (if present in incoming values). If there is a key in the incoming array that matches the
-     * primary key for the model AND it is not null, then we check the db. If there's a an object we return it.  If not
-     * we return false.
-     *
-     * @param array  $props_n_values  incoming array of properties and their values
-     * @param string $classname          the classname of the child class
-     * @param string $timezone
-     * @param array  $date_formats      incoming date_formats in an array where the first value is the
-     *                                  date_format and the second value is the time format
-     * @return mixed (EE_Base_Class|bool)
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws ReflectionException
-     * @throws ReflectionException
-     */
-    protected static function _check_for_object($props_n_values, $classname, $timezone = '', $date_formats = [])
-    {
-        $existing = null;
-        $model    = self::_get_model($classname, $timezone);
-        if ($model->has_primary_key_field()) {
-            $primary_id_ref = self::_get_primary_key_name($classname);
-            if (
-                array_key_exists($primary_id_ref, $props_n_values)
-                && ! empty($props_n_values[ $primary_id_ref ])
-            ) {
-                $existing = $model->get_one_by_ID($props_n_values[ $primary_id_ref ]);
-            }
-        } elseif ($model->has_all_combined_primary_key_fields($props_n_values)) {
-            // no primary key on this model, but there's still a matching item in the DB
-            $existing = $model->get_one_by_ID(
-                $model->get_index_primary_key_string($props_n_values)
-            );
-        }
-        if ($existing) {
-            $has_date_formats = ! empty($date_formats) && is_array($date_formats)
-                                && isset($date_formats[0], $date_formats[1]);
-            $date_format      = $has_date_formats ? $date_formats[0] : (string) get_option('date_format', 'Y-m-d');
-            $time_format      = $has_date_formats ? $date_formats[1] : (string) get_option('time_format', 'g:i a');
-            // set date formats before setting values
-            $existing->set_date_format($date_format);
-            $existing->set_time_format($time_format);
-            foreach ($props_n_values as $property => $field_value) {
-                $existing->set($property, $field_value);
-            }
-            return $existing;
-        }
-        return false;
-    }
-
-
-    /**
-     * This sets the internal date format to what is sent in to be used as the new default for the class
-     * internally instead of wp set date format options
-     *
-     * @param string $format should be a format recognizable by PHP date() functions.
-     * @since 4.6
-     */
-    public function set_date_format($format)
-    {
-        if ($format !== $this->_dt_frmt) {
-            $this->_dt_frmt = $format;
-            // clear cached_properties because they won't be relevant now.
-            $this->_clear_cached_properties();
-        }
-    }
-
-
-    /**
-     * This sets the internal time format string to what is sent in to be used as the new default for the
-     * class internally instead of wp set time format options.
-     *
-     * @param string $format should be a format recognizable by PHP date() functions.
-     * @since 4.6
-     */
-    public function set_time_format($format)
-    {
-        if ($format !== $this->_tm_frmt) {
-            $this->_tm_frmt = $format;
-            // clear cached_properties because they won't be relevant now.
-            $this->_clear_cached_properties();
-        }
-    }
-
-
-    /**
-     * This just takes care of clearing out the cached_properties
-     *
-     * @return void
-     */
-    protected function _clear_cached_properties()
-    {
-        $this->_cached_properties = [];
-    }
-
-
-    /**
-     * Sets whether or not this model object should be allowed to be saved to the DB.
-     * Normally once this is set to FALSE you wouldn't set it back to TRUE, unless
-     * you got new information that somehow made you change your mind.
-     *
-     * @param boolean $allow_persist
-     * @return boolean
-     */
-    public function set_allow_persist($allow_persist)
-    {
-        return $this->_allow_persist = $allow_persist;
-    }
-
-
-    /**
-     * Gets the field's original value when this object was constructed during this request.
-     * This can be helpful when determining if a model object has changed or not
-     *
-     * @param string $field_name
-     * @return mixed|null
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function get_original($field_name)
-    {
-        if (
-            isset($this->_props_n_values_provided_in_constructor[ $field_name ])
-            && $field_settings = $this->_model->field_settings_for($field_name)
-        ) {
-            return $field_settings->prepare_for_get($this->_props_n_values_provided_in_constructor[ $field_name ]);
-        }
-        return null;
-    }
-
-
-    /**
-     * @param EE_Base_Class $obj
-     * @return string
-     */
-    public function get_class($obj)
-    {
-        return get_class($obj);
-    }
-
-
-    /**
-     * Set custom select values for model.
-     *
-     * @param array $custom_select_values
-     */
-    public function setCustomSelectsValues(array $custom_select_values)
-    {
-        $this->custom_selection_results = $custom_select_values;
-    }
-
-
-    /**
-     * Returns the custom select value for the provided alias if its set.
-     * If not set, returns null.
-     *
-     * @param string $alias
-     * @return string|int|float|null
-     */
-    public function getCustomSelect($alias)
-    {
-        return isset($this->custom_selection_results[ $alias ])
-            ? $this->custom_selection_results[ $alias ]
-            : null;
-    }
-
-
-    /**
-     * This sets the field value on the db column if it exists for the given $column_name or
-     * saves it to EE_Extra_Meta if the given $column_name does not match a db column.
-     *
-     * @param string $field_name  Must be the exact column name.
-     * @param mixed  $field_value The value to set.
-     * @return int|bool @see EE_Base_Class::update_extra_meta() for return docs.
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @see EE_message::get_column_value for related documentation on the necessity of this method.
-     */
-    public function set_field_or_extra_meta($field_name, $field_value)
-    {
-        if ($this->_model->has_field($field_name)) {
-            $this->set($field_name, $field_value);
-            return true;
-        }
-        // ensure this object is saved first so that extra meta can be properly related.
-        $this->save();
-        return $this->update_extra_meta($field_name, $field_value);
-    }
-
-
-    /**
-     *        Saves this object to the database. An array may be supplied to set some values on this
-     * object just before saving.
-     *
-     * @param array $set_cols_n_values keys are field names, values are their new values,
-     *                                 if provided during the save() method
-     *                                 (often client code will change the fields' values before calling save)
-     * @return int                     1 on a successful update or the ID of the new entry on insert;
-     *                                 0 on failure or if the model object isn't allowed to persist
-     *                                 (as determined by EE_Base_Class::allow_persist())
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws ReflectionException
-     * @throws ReflectionException
-     */
-    public function save($set_cols_n_values = [])
-    {
-        /**
-         * Filters the fields we're about to save on the model object
-         *
-         * @param array         $set_cols_n_values
-         * @param EE_Base_Class $model_object
-         */
-        $set_cols_n_values = (array) apply_filters(
-            'FHEE__EE_Base_Class__save__set_cols_n_values',
-            $set_cols_n_values,
-            $this
-        );
-        // set attributes as provided in $set_cols_n_values
-        foreach ($set_cols_n_values as $column => $value) {
-            $this->set($column, $value);
-        }
-        // no changes ? then don't do anything
-        if (! $this->_has_changes && $this->ID() && $this->_model->get_primary_key_field()->is_auto_increment()) {
-            return 0;
-        }
-        /**
-         * Saving a model object.
-         * Before we perform a save, this action is fired.
-         *
-         * @param EE_Base_Class $model_object the model object about to be saved.
-         */
-        do_action('AHEE__EE_Base_Class__save__begin', $this);
-        if (! $this->allow_persist()) {
-            return 0;
-        }
-        // now get current attribute values
-        $save_cols_n_values = $this->_fields;
-        // if the object already has an ID, update it. Otherwise, insert it
-        // also: change the assumption about values passed to the model NOT being prepare dby the model object.
-        // They have been
-        $old_assumption_concerning_value_preparation = $this->_model
-            ->get_assumption_concerning_values_already_prepared_by_model_object();
-        $this->_model->assume_values_already_prepared_by_model_object(true);
-        // does this model have an autoincrement PK?
-        if ($this->_model->has_primary_key_field()) {
-            if ($this->_model->get_primary_key_field()->is_auto_increment()) {
-                // ok check if it's set, if so: update; if not, insert
-                if (! empty($save_cols_n_values[ $this->_model->primary_key_name() ])) {
-                    $results = $this->_model->update_by_ID($save_cols_n_values, $this->ID());
-                } else {
-                    unset($save_cols_n_values[ $this->_model->primary_key_name() ]);
-                    $results = $this->_model->insert($save_cols_n_values);
-                    if ($results) {
-                        // if successful, set the primary key
-                        // but don't use the normal SET method, because it will check if
-                        // an item with the same ID exists in the mapper & db, then
-                        // will find it in the db (because we just added it) and THAT object
-                        // will get added to the mapper before we can add this one!
-                        // but if we just avoid using the SET method, all that headache can be avoided
-                        $pk_field_name                   = $this->_model->primary_key_name();
-                        $this->_fields[ $pk_field_name ] = $results;
-                        $this->_clear_cached_property($pk_field_name);
-                        $this->_model->add_to_entity_map($this);
-                        $this->_update_cached_related_model_objs_fks();
-                    }
-                }
-            } else {
-                // PK is NOT auto-increment
-                // so check if one like it already exists in the db
-                if ($this->_model->exists_by_ID($this->ID())) {
-                    if (WP_DEBUG && ! $this->in_entity_map()) {
-                        throw new EE_Error(
-                            sprintf(
-                                esc_html__(
-                                    'Using a model object %1$s that is NOT in the entity map, can lead to unexpected errors. You should either: %4$s 1. Put it in the entity mapper by calling %2$s %4$s 2. Discard this model object and use what is in the entity mapper %4$s 3. Fetch from the database using %3$s',
-                                    'event_espresso'
-                                ),
-                                get_class($this),
-                                get_class($this->_model) . '::instance()->add_to_entity_map()',
-                                get_class($this->_model) . '::instance()->get_one_by_ID()',
-                                '<br />'
-                            )
-                        );
-                    }
-                    $results = $this->_model->update_by_ID($save_cols_n_values, $this->ID());
-                } else {
-                    $results = $this->_model->insert($save_cols_n_values);
-                    $this->_update_cached_related_model_objs_fks();
-                }
-            }
-        } else {
-            // there is NO primary key
-            $already_in_db = false;
-            foreach ($this->_model->unique_indexes() as $index) {
-                $uniqueness_where_params = array_intersect_key($save_cols_n_values, $index->fields());
-                if ($this->_model->exists([$uniqueness_where_params])) {
-                    $already_in_db = true;
-                }
-            }
-            if ($already_in_db) {
-                $combined_pk_fields_n_values = array_intersect_key(
-                    $save_cols_n_values,
-                    $this->_model->get_combined_primary_key_fields()
-                );
-                $results                     = $this->_model->update(
-                    $save_cols_n_values,
-                    $combined_pk_fields_n_values
-                );
-            } else {
-                $results = $this->_model->insert($save_cols_n_values);
-            }
-        }
-        // restore the old assumption about values being prepared by the model object
-        $this->_model->assume_values_already_prepared_by_model_object(
-            $old_assumption_concerning_value_preparation
-        );
-        /**
-         * After saving the model object this action is called
-         *
-         * @param EE_Base_Class $model_object which was just saved
-         * @param boolean|int   $results      if it were updated, TRUE or FALSE; if it were newly inserted
-         *                                    the new ID (or 0 if an error occurred and it wasn't updated)
-         */
-        do_action('AHEE__EE_Base_Class__save__end', $this, $results);
-        $this->_has_changes = false;
-        return $results;
-    }
-
-
-    /**
-     * Similar to insert_post_meta, adds a record in the Extra_Meta model's table with the given key and value.
-     * A $previous_value can be specified in case there are many meta rows with the same key
-     *
-     * @param string $meta_key
-     * @param mixed  $meta_value
-     * @param mixed  $previous_value
-     * @return bool|int # of records updated (or BOOLEAN if we actually ended up inserting the extra meta row)
-     *                  NOTE: if the values haven't changed, returns 0
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function update_extra_meta($meta_key, $meta_value, $previous_value = null)
-    {
-        $query_params = [
-            [
-                'EXM_key'  => $meta_key,
-                'OBJ_ID'   => $this->ID(),
-                'EXM_type' => $this->_model->get_this_model_name(),
-            ],
-        ];
-        if ($previous_value !== null) {
-            $query_params[0]['EXM_value'] = $meta_value;
-        }
-        $existing_rows_like_that = EEM_Extra_Meta::instance()->get_all($query_params);
-        if (! $existing_rows_like_that) {
-            return $this->add_extra_meta($meta_key, $meta_value);
-        }
-        foreach ($existing_rows_like_that as $existing_row) {
-            $existing_row->save(['EXM_value' => $meta_value]);
-        }
-        return count($existing_rows_like_that);
-    }
-
-
-    /**
-     * Gets whether or not this model object is allowed to persist/be saved to the database.
-     *
-     * @return boolean
-     */
-    public function allow_persist()
-    {
-        return $this->_allow_persist;
-    }
-
-
-    /**
-     * Updates the foreign key on related models objects pointing to this to have this model object's ID
-     * as their foreign key.  If the cached related model objects already exist in the db, saves them (so that the DB
-     * is consistent) Especially useful in case we JUST added this model object ot the database and we want to let its
-     * cached relations with foreign keys to it know about that change. Eg: we've created a transaction but haven't
-     * saved it to the db. We also create a registration and don't save it to the DB, but we DO cache it on the
-     * transaction. Now, when we save the transaction, the registration's TXN_ID will be automatically updated, whether
-     * or not they exist in the DB (if they do, their DB records will be automatically updated)
-     *
-     * @return void
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    protected function _update_cached_related_model_objs_fks()
-    {
-        foreach ($this->_model->relation_settings() as $relation_name => $relation_obj) {
-            if ($relation_obj instanceof EE_Has_Many_Relation) {
-                foreach ($this->get_all_from_cache($relation_name) as $related_model_obj_in_cache) {
-                    $fk_to_this = $related_model_obj_in_cache->get_model()->get_foreign_key_to(
-                        $this->_model->get_this_model_name()
-                    );
-                    $related_model_obj_in_cache->set($fk_to_this->get_name(), $this->ID());
-                    if ($related_model_obj_in_cache->ID()) {
-                        $related_model_obj_in_cache->save();
-                    }
-                }
-            }
-        }
-    }
-
-
-    /**
-     * in_entity_map
-     * Checks if this model object has been proven to already be in the entity map
-     *
-     * @return boolean
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function in_entity_map()
-    {
-        // well, if we looked, did we find it in the entity map?
-        return $this->ID() && $this->_model->get_from_entity_map($this->ID()) === $this;
-    }
-
-
-    /**
-     * Adds a new extra meta record. If $unique is set to TRUE, we'll first double-check
-     * no other extra meta for this model object have the same key. Returns TRUE if the
-     * extra meta row was entered, false if not
-     *
-     * @param string  $meta_key
-     * @param mixed   $meta_value
-     * @param boolean $unique
-     * @return boolean
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws ReflectionException
-     */
-    public function add_extra_meta($meta_key, $meta_value, $unique = false)
-    {
-        if ($unique) {
-            $existing_extra_meta = EEM_Extra_Meta::instance()->get_one(
-                [
-                    [
-                        'EXM_key'  => $meta_key,
-                        'OBJ_ID'   => $this->ID(),
-                        'EXM_type' => $this->_model->get_this_model_name(),
-                    ],
-                ]
-            );
-            if ($existing_extra_meta) {
-                return false;
-            }
-        }
-        $new_extra_meta = EE_Extra_Meta::new_instance(
-            [
-                'EXM_key'   => $meta_key,
-                'EXM_value' => $meta_value,
-                'OBJ_ID'    => $this->ID(),
-                'EXM_type'  => $this->_model->get_this_model_name(),
-            ]
-        );
-        $new_extra_meta->save();
-        return true;
-    }
-
-
-    /**
-     * Fetches a single EE_Base_Class on that relation. (If the relation is of type
-     * BelongsTo, it will only ever have 1 object. However, other relations could have an array of objects)
-     *
-     * @param string $relationName
-     * @return EE_Base_Class[] NOT necessarily indexed by primary keys
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function get_all_from_cache($relationName)
-    {
-        $objects = isset($this->_model_relations[ $relationName ]) ? $this->_model_relations[ $relationName ] : [];
-        // if the result is not an array, but exists, make it an array
-        $objects = is_array($objects) ? $objects : [$objects];
-        // bugfix for https://events.codebasehq.com/projects/event-espresso/tickets/7143
-        // basically, if this model object was stored in the session, and these cached model objects
-        // already have IDs, let's make sure they're in their model's entity mapper
-        // otherwise we will have duplicates next time we call
-        // EE_Registry::instance()->load_model( $relationName )->get_one_by_ID( $result->ID() );
-        $related_model = EE_Registry::instance()->load_model($relationName);
-        foreach ($objects as $model_object) {
-            if ($related_model instanceof EEM_Base && $model_object instanceof EE_Base_Class) {
-                // ensure its in the map if it has an ID; otherwise it will be added to the map when its saved
-                if ($model_object->ID()) {
-                    $related_model->add_to_entity_map($model_object);
-                }
-            } else {
-                throw new EE_Error(
-                    sprintf(
-                        esc_html__(
-                            'Error retrieving related model objects. Either $1%s is not a model or $2%s is not a model object',
-                            'event_espresso'
-                        ),
-                        $relationName,
-                        gettype($model_object)
-                    )
-                );
-            }
-        }
-        $this->updateTimezoneOnRelated($objects);
-        return $objects;
-    }
-
-
-    /**
-     * This retrieves the value of the db column set on this class or if that's not present
-     * it will attempt to retrieve from extra_meta if found.
-     * Example Usage:
-     * Via EE_Message child class:
-     * Due to the dynamic nature of the EE_messages system, EE_messengers will always have a "to",
-     * "from", "subject", and "content" field (as represented in the EE_Message schema), however they may
-     * also have additional main fields specific to the messenger.  The system accommodates those extra
-     * fields through the EE_Extra_Meta table.  This method allows for EE_messengers to retrieve the
-     * value for those extra fields dynamically via the EE_message object.
-     *
-     * @param string $field_name expecting the fully qualified field name.
-     * @return mixed|null  value for the field if found.  null if not found.
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function get_field_or_extra_meta($field_name)
-    {
-        // if this isn't a column in the main table, then see if it is in the extra meta.
-        return $this->_model->has_field($field_name)
-            ? $this->get($field_name)
-            : $this->get_extra_meta($field_name, true);
-    }
-
-
-    /**
-     * Gets the extra meta with the given meta key. If you specify "single" we just return 1, otherwise
-     * an array of everything found. Requires that this model actually have a relation of type EE_Has_Many_Any_Relation.
-     * You can specify $default is case you haven't found the extra meta
-     *
-     * @param string  $meta_key
-     * @param boolean $single
-     * @param mixed   $default if we don't find anything, what should we return?
-     * @return mixed single value if $single; array if ! $single
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function get_extra_meta($meta_key, $single = false, $default = null)
-    {
-        if ($single) {
-            $result = $this->get_first_related(
-                'Extra_Meta',
-                [['EXM_key' => $meta_key]]
-            );
-            if ($result instanceof EE_Extra_Meta) {
-                return $result->value();
-            }
-        } else {
-            $results = $this->get_many_related(
-                'Extra_Meta',
-                [['EXM_key' => $meta_key]]
-            );
-            if ($results) {
-                $values = [];
-                foreach ($results as $result) {
-                    if ($result instanceof EE_Extra_Meta) {
-                        $values[ $result->ID() ] = $result->value();
-                    }
-                }
-                return $values;
-            }
-        }
-        // if nothing discovered yet return default.
-        return apply_filters(
-            'FHEE__EE_Base_Class__get_extra_meta__default_value',
-            $default,
-            $meta_key,
-            $single,
-            $this
-        );
-    }
-
-
-    /**
-     * Gets the first (ie, one) related model object of the specified type.
-     *
-     * @param string $relationName key in the model's _model_relations array
-     * @param array  $query_params
-     * @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
-     * @return EE_Base_Class (not an array, a single object)
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function get_first_related($relationName, $query_params = [])
-    {
-        $model_relation = $this->_model->related_settings_for($relationName);
-        if (! $this->ID()) {
-            // this doesn't exist in the DB,
-            // but maybe the relation type is "belongs to" and the related object might
-            if ($model_relation instanceof EE_Belongs_To_Relation) {
-                return $this->_model->get_first_related(
-                    $this,
-                    $relationName,
-                    $query_params
-                );
-            }
-            // this doesn't exist in the DB and apparently the thing it belongs to doesn't either,
-            // just get what's cached on this object
-            return $this->get_one_from_cache($relationName);
-        }
-        // this exists in the DB, get from the cache OR the DB
-        // if they've provided some query parameters, don't bother trying to cache the result
-        // also make sure we're not caching the result of get_first_related
-        // on a relation which should have an array of objects (because the cache might have an array of objects)
-        if (
-            $query_params
-            || ! $model_relation instanceof EE_Belongs_To_Relation
-        ) {
-            return $this->_model->get_first_related(
-                $this,
-                $relationName,
-                $query_params
-            );
-        }
-        // check if we've already cached the result of this query
-        $cached_result = $this->get_one_from_cache($relationName);
-        if ($cached_result) {
-            return $cached_result;
-        }
-        $related_model_object = $this->_model->get_first_related(
-            $this,
-            $relationName,
-            $query_params
-        );
-        $this->cache($relationName, $related_model_object);
-        return $related_model_object;
-    }
-
-
-    /**
-     * Gets all the related model objects of the specified type. Eg, if the current class if
-     * EE_Event, you could call $this->get_many_related('Registration') to get an array of all the
-     * EE_Registration objects which related to this event. Note: by default, we remove the "default query params"
-     * because we want to get even deleted items etc.
-     *
-     * @param string $relationName key in the model's _model_relations array
-     * @param array  $query_params
-     * @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md#0-where-conditions
-     * @return EE_Base_Class[]     Results not necessarily indexed by IDs, because some results might not have primary
-     *                             keys or might not be saved yet. Consider using EEM_Base::get_IDs() on these
-     *                             results if you want IDs
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function get_many_related($relationName, $query_params = [])
-    {
-        if (! $this->ID()) {
-            // this doesn't exist in the DB, so just get the related things from the cache
-            return $this->get_all_from_cache($relationName);
-        }
-        // this exists in the DB, so get the related things from either the cache or the DB
-        // if there are query parameters, forget about caching the related model objects.
-        if ($query_params) {
-            return $this->_model->get_all_related(
-                $this,
-                $relationName,
-                $query_params
-            );
-        }
-        // did we already cache the result of this query?
-        $cached_results = $this->get_all_from_cache($relationName);
-        if ($cached_results) {
-            return $cached_results;
-        }
-        $related_model_objects = $this->_model->get_all_related(
-            $this,
-            $relationName,
-            $query_params
-        );
-        // if no query parameters were passed, then we got all the related model objects
-        // for that relation. We can cache them then.
-        foreach ($related_model_objects as $related_model_object) {
-            $this->cache($relationName, $related_model_object);
-        }
-        $this->updateTimezoneOnRelated($related_model_objects);
-        return $related_model_objects;
-    }
-
-
-    /**
-     * Fetches a single EE_Base_Class on that relation. (If the relation is of type
-     * BelongsTo, it will only ever have 1 object. However, other relations could have an array of objects)
-     *
-     * @param string $relationName
-     * @return EE_Base_Class
-     */
-    public function get_one_from_cache($relationName)
-    {
-        $cached_array_or_object = isset($this->_model_relations[ $relationName ])
-            ? $this->_model_relations[ $relationName ]
-            : null;
-        if (is_array($cached_array_or_object)) {
-            $cached_array_or_object = array_shift($cached_array_or_object);
-        }
-        $this->updateTimezoneOnRelated($cached_array_or_object);
-        return $cached_array_or_object;
-    }
-
-
-    /**
-     * cache
-     * stores the passed model object on the current model object.
-     * In certain circumstances, we can use this cached model object instead of querying for another one entirely.
-     *
-     * @param string        $relationName    one of the keys in the _model_relations array on the model. Eg
-     *                                       'Registration' associated with this model object
-     * @param EE_Base_Class $object_to_cache that has a relation to this model object. (Eg, if this is a Transaction,
-     *                                       that could be a payment or a registration)
-     * @param null          $cache_id        a string or number that will be used as the key for any Belongs_To_Many
-     *                                       items which will be stored in an array on this object
-     * @return mixed    index into cache, or just TRUE if the relation is of type Belongs_To (because there's only one
-     *                                       related thing, no array)
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function cache($relationName = '', $object_to_cache = null, $cache_id = null)
-    {
-        // its entirely possible that there IS no related object yet in which case there is nothing to cache.
-        if (! $object_to_cache instanceof EE_Base_Class) {
-            return false;
-        }
-        // also get "how" the object is related, or throw an error
-        if (! $relationship_to_model = $this->_model->related_settings_for($relationName)) {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__('There is no relationship to %s on a %s. Cannot cache it', 'event_espresso'),
-                    $relationName,
-                    get_class($this)
-                )
-            );
-        }
-        // how many things are related ?
-        if ($relationship_to_model instanceof EE_Belongs_To_Relation) {
-            // if it's a "belongs to" relationship, then there's only one related model object
-            // eg, if this is a registration, there's only 1 attendee for it
-            // so for these model objects just set it to be cached
-            $this->_model_relations[ $relationName ] = $object_to_cache;
-            return true;
-        }
-        // otherwise, this is the "many" side of a one to many relationship,
-        // so we'll add the object to the array of related objects for that type.
-        // eg: if this is an event, there are many registrations for that event,
-        // so we cache the registrations in an array
-        if (! is_array($this->_model_relations[ $relationName ])) {
-            // if for some reason, the cached item is a model object,
-            // then stick that in the array, otherwise start with an empty array
-            $this->_model_relations[ $relationName ] = $this->_model_relations[ $relationName ] instanceof EE_Base_Class
-                ? [$this->_model_relations[ $relationName ]]
-                : [];
-        }
-        // first check for a cache_id which is normally empty
-        if (! empty($cache_id)) {
-            // if the cache_id exists, then it means we are purposely trying to cache this
-            // with a known key that can then be used to retrieve the object later on
-            $this->_model_relations[ $relationName ][ $cache_id ] = $object_to_cache;
-            return $cache_id;
-        }
-        if ($object_to_cache->ID()) {
-            // OR the cached object originally came from the db, so let's just use it's PK for an ID
-            $this->_model_relations[ $relationName ][ $object_to_cache->ID() ] = $object_to_cache;
-            return $object_to_cache->ID();
-        }
-        // OR it's a new object with no ID, so just throw it in the array with an auto-incremented ID
-        $this->_model_relations[ $relationName ][] = $object_to_cache;
-        // move the internal pointer to the end of the array
-        end($this->_model_relations[ $relationName ]);
-        // and grab the key so that we can return it
-        return key($this->_model_relations[ $relationName ]);
-    }
-
-
-    /**
-     * This just returns whatever is set for the current timezone.
-     *
-     * @return string timezone string
-     */
-    public function get_timezone()
-    {
-        if (empty($this->_timezone)) {
-            $this->set_timezone();
-        }
-        return $this->_timezone;
-    }
-
-
-    /**
-     * See $_timezone property for description of what the timezone property is for.  This SETS the timezone internally
-     * for being able to reference what timezone we are running conversions on when converting TO the internal timezone
-     * (UTC Unix Timestamp) for the object OR when converting FROM the internal timezone (UTC Unix Timestamp). This is
-     * available to all child classes that may be using the EE_Datetime_Field for a field data type.
-     *
-     * @param string $timezone A valid timezone string as described by @link http://www.php.net/manual/en/timezones.php
-     * @param bool   $only_if_not_set if true and $this->_timezone already has a value, then will not do anything
-     * @return void
-     */
-    public function set_timezone($timezone = '', $only_if_not_set = false)
-    {
-        static $set_in_progress = false;
-        // don't update the timezone if it's already set ?
-        if (($only_if_not_set && $this->_timezone !== '') ) {
-            return;
-        }
-        $valid_timezone = ! empty($timezone) && $this->_timezone && $timezone !== $this->_timezone
-            ? EEH_DTT_Helper::get_valid_timezone_string($timezone)
-            : $this->_timezone;
-        // do NOT set the timezone if we are already in the process of setting the timezone
-        // OR the existing timezone is already set and the incoming value is nothing (which gets set to default TZ)
-        // OR the existing timezone is already set and the validated value is the same as the existing timezone
-        if (
-            $set_in_progress
-            || (
-                ! empty($this->_timezone)
-                && (
-                    empty($timezone) || $valid_timezone === $this->_timezone
-                )
-            )
-        ) {
-            return;
-        }
-        $set_in_progress = true;
-        $this->_timezone = $valid_timezone ? $valid_timezone : EEH_DTT_Helper::get_valid_timezone_string();
-        $TZ = new DateTimeZone($this->_timezone);
-        // make sure we clear all cached properties because they won't be relevant now
-        $this->_clear_cached_properties();
-        // make sure we update field settings and the date for all EE_Datetime_Fields
-        $model_fields = $this->_model->field_settings();
-        foreach ($model_fields as $field_name => $field_obj) {
-            if ($field_obj instanceof EE_Datetime_Field) {
-                $field_obj->set_timezone($this->_timezone);
-                if (isset($this->_fields[ $field_name ]) && $this->_fields[ $field_name ] instanceof DateTime) {
-                    EEH_DTT_Helper::setTimezone($this->_fields[ $field_name ], $TZ);
-                }
-            }
-        }
-        $set_in_progress = false;
-    }
-
-
-    /**
-     * @param array|EE_Base_Class $related
-     * @since $VID:$
-     */
-    private function updateTimezoneOnRelated($related)
-    {
-        if ($related instanceof EE_Base_Class && $related->get_timezone() !== $this->_timezone) {
-            $related->set_timezone($this->_timezone);
-            return;
-        }
-        if (is_array($related)) {
-            foreach ($related as $object) {
-                $this->updateTimezoneOnRelated($object);
-            }
-        }
-    }
-
-
-    /**
-     * This returns the current internal set format for the date and time formats.
-     *
-     * @param bool $full           if true (default), then return the full format.  Otherwise will return an array
-     *                             where the first value is the date format and the second value is the time format.
-     * @return mixed string|array
-     */
-    public function get_format($full = true)
-    {
-        return $full ? $this->_dt_frmt . ' ' . $this->_tm_frmt : [$this->_dt_frmt, $this->_tm_frmt];
-    }
-
-
-    /**
-     * update_cache_after_object_save
-     * Allows a cached item to have it's cache ID (within the array of cached items) reset using the new ID it has
-     * obtained after being saved to the db
-     *
-     * @param string        $relationName       - the type of object that is cached
-     * @param EE_Base_Class $newly_saved_object - the newly saved object to be re-cached
-     * @param string        $current_cache_id   - the ID that was used when originally caching the object
-     * @return boolean TRUE on success, FALSE on fail
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws EE_Error
-     */
-    public function update_cache_after_object_save(
-        $relationName,
-        EE_Base_Class $newly_saved_object,
-        $current_cache_id = ''
-    ) {
-        // verify that incoming object is of the correct type
-        $obj_class = 'EE_' . $relationName;
-        if (! $newly_saved_object instanceof $obj_class) {
-            return false;
-        }
+	/**
+	 * @var boolean indicating whether or not this model object is intended to ever be saved
+	 * For example, we might create model objects intended to only be used for the duration
+	 * of this request and to be thrown away, and if they were accidentally saved
+	 * it would be a bug.
+	 */
+	protected $_allow_persist = true;
+
+	/**
+	 * This property is for holding a cached array of object properties indexed by property name as the key.
+	 * The purpose of this is for setting a cache on properties that may have calculated values after a
+	 * prepare_for_get.  That way the cache can be checked first and the calculated property returned instead of having
+	 * to recalculate. Used by _set_cached_property() and _get_cached_property() methods.
+	 *
+	 * @var array
+	 */
+	protected $_cached_properties = [];
+
+	/**
+	 * This is a cache of results from custom selections done on a query that constructs this entity. The only purpose
+	 * for these values is for retrieval of the results, they are not further queryable and they are not persisted to
+	 * the db.  They also do not automatically update if there are any changes to the data that produced their results.
+	 * The format is a simple array of field_alias => field_value.  So for instance if a custom select was something
+	 * like,  "Select COUNT(Registration.REG_ID) as Registration_Count ...", then the resulting value will be in this
+	 * array as:
+	 * array(
+	 *  'Registration_Count' => 24
+	 * );
+	 * Note: if the custom select configuration for the query included a data type, the value will be in the data type
+	 * provided for the query (@see EventEspresso\core\domain\values\model\CustomSelects::__construct phpdocs for more
+	 * info)
+	 *
+	 * @var array
+	 */
+	protected $custom_selection_results = [];
+
+	/**
+	 * date format
+	 * pattern or format for displaying dates
+	 *
+	 * @var string $_dt_frmt
+	 */
+	protected $_dt_frmt;
+
+	/**
+	 * Array where keys are field names (see the model's _fields property) and values are their values. To see what
+	 * their types should be, look at what that field object returns on its prepare_for_get and prepare_for_set methods)
+	 *
+	 * @var array
+	 */
+	protected $_fields = [];
+
+	/**
+	 * @var boolean indicating whether or not this model object's properties have changed since construction
+	 */
+	protected $_has_changes = false;
+
+	/**
+	 * @var EEM_Base
+	 */
+	protected $_model;
+
+
+	/**
+	 * An array containing keys of the related model, and values are either an array of related mode objects or a
+	 * single
+	 * related model object. see the model's _model_relations. The keys should match those specified. And if the
+	 * relation is of type EE_Belongs_To (or one of its children), then there should only be ONE related model object,
+	 * all others have an array)
+	 *
+	 * @var array
+	 */
+	protected $_model_relations = [];
+
+	/**
+	 * This is an array of the original properties and values provided during construction
+	 * of this model object. (keys are model field names, values are their values).
+	 * This list is important to remember so that when we are merging data from the db, we know
+	 * which values to override and which to not override.
+	 *
+	 * @var array
+	 */
+	protected $_props_n_values_provided_in_constructor;
+
+	/**
+	 * Timezone
+	 * This gets set by the "set_timezone()" method so that we know what timezone incoming strings|timestamps are in.
+	 * This can also be used before a get to set what timezone you want strings coming out of the object to be in.  NOT
+	 * all EE_Base_Class child classes use this property but any that use a EE_Datetime_Field data type will have
+	 * access to it.
+	 *
+	 * @var string
+	 */
+	protected $_timezone = '';
+
+	/**
+	 * time format
+	 * pattern or format for displaying time
+	 *
+	 * @var string $_tm_frmt
+	 */
+	protected $_tm_frmt;
+
+
+	/**
+	 * basic constructor for Event Espresso classes, performs any necessary initialization, and verifies it's children
+	 * play nice
+	 *
+	 * @param array   $field_values                            where each key is a field (ie, array key in the 2nd
+	 *                                                         layer of the model's _fields array, (eg, EVT_ID,
+	 *                                                         TXN_amount, QST_name, etc) and values are their values
+	 * @param boolean $set_from_db                             a flag for setting if the class is instantiated by the
+	 *                                                         corresponding db model or not.
+	 * @param string  $timezone                                indicate what timezone you want any datetime fields to
+	 *                                                         be in when instantiating a EE_Base_Class object.
+	 * @param array   $date_formats                            An array of date formats to set on construct where first
+	 *                                                         value is the date_format and second value is the time
+	 *                                                         format.
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	protected function __construct($field_values = [], $set_from_db = false, $timezone = '', $date_formats = [])
+	{
+		// ensure $fieldValues is an array
+		$field_values = is_array($field_values) ? $field_values : [$field_values];
+		$className    = get_class($this);
+		do_action("AHEE__{$className}__construct", $this, $field_values);
+		// remember what values were passed to this constructor
+		$this->_props_n_values_provided_in_constructor = $field_values;
+		$this->setDateAndTimeFormats($date_formats);
+		$this->_model = $this->get_model($timezone);
+		$model_fields = $this->_model->field_settings();
+		$this->validateFieldValues($model_fields, $field_values);
+		$this->setFieldValues($model_fields, $set_from_db);
+		// remember in entity mapper
+		if (! $set_from_db && $this->_model->has_primary_key_field() && $this->ID()) {
+			$this->_model->add_to_entity_map($this);
+		}
+		// setup all the relations
+		foreach ($this->_model->relation_settings() as $relation_name => $relation_obj) {
+			$this->_model_relations[ $relation_name ] = $relation_obj instanceof EE_Belongs_To_Relation
+				? null
+				: [];
+		}
+		/**
+		 * Action done at the end of each model object construction
+		 *
+		 * @param EE_Base_Class $this the model object just created
+		 */
+		do_action('AHEE__EE_Base_Class__construct__finished', $this);
+	}
+
+
+	/**
+	 * for getting a model while instantiated.
+	 *
+	 * @param string|null $timezone
+	 * @return EEM_Base | EEM_CPT_Base
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function get_model($timezone = '')
+	{
+		if (! $this->_model) {
+			$timezone     = $timezone ? $timezone : $this->_timezone;
+			$modelName    = self::_get_model_classname(get_class($this));
+			$this->_model = self::_get_model_instance_with_name($modelName, $timezone);
+			$this->set_timezone($timezone);
+		}
+		return $this->_model;
+	}
+
+
+	/**
+	 * Overrides parent because parent expects old models.
+	 * This also doesn't do any validation, and won't work for serialized arrays
+	 *
+	 * @param string $field_name
+	 * @param mixed  $field_value_from_db
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function set_from_db($field_name, $field_value_from_db)
+	{
+		$field_obj = $this->_model->field_settings_for($field_name);
+		if ($field_obj instanceof EE_Model_Field_Base) {
+			// you would think the DB has no NULLs for non-null label fields right? wrong!
+			// eg, a CPT model object could have an entry in the posts table, but no
+			// entry in the meta table. Meaning that all its columns in the meta table
+			// are null! yikes! so when we find one like that, use defaults for its meta columns
+			if ($field_value_from_db === null) {
+				if ($field_obj->is_nullable()) {
+					// if the field allows nulls, then let it be null
+					$field_value = null;
+				} else {
+					$field_value = $field_obj->get_default_value();
+				}
+			} else {
+				$field_value = $field_obj->prepare_for_set_from_db($field_value_from_db);
+			}
+			$this->_fields[ $field_name ] = $field_value;
+			$this->_clear_cached_property($field_name);
+		}
+	}
+
+
+	/**
+	 * Overrides parent because parent expects old models.
+	 * This also doesn't do any validation, and won't work for serialized arrays
+	 *
+	 * @param string $field_name
+	 * @param mixed  $field_value
+	 * @param bool   $use_default
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws ReflectionException
+	 * @throws ReflectionException
+	 */
+	public function set($field_name, $field_value, $use_default = false)
+	{
+		// if not using default and nothing has changed, and object has already been setup (has ID),
+		// then don't do anything
+		if (
+			! $use_default
+			&& $this->_fields[ $field_name ] === $field_value
+			&& $this->ID()
+		) {
+			return;
+		}
+		$this->_has_changes = true;
+		$field_obj          = $this->_model->field_settings_for($field_name);
+		if ($field_obj instanceof EE_Model_Field_Base) {
+			if ($field_obj instanceof EE_Datetime_Field) {
+				$field_obj->set_timezone($this->_timezone);
+				$field_obj->set_date_format($this->_dt_frmt);
+				$field_obj->set_time_format($this->_tm_frmt);
+			}
+			$holder_of_value = $field_obj->prepare_for_set($field_value);
+			// should the value be null?
+			if (($field_value === null || $holder_of_value === null || $holder_of_value === '') && $use_default) {
+				$this->_fields[ $field_name ] = $field_obj->get_default_value();
+				/**
+				 * To save having to refactor all the models, if a default value is used for a
+				 * EE_Datetime_Field, and that value is not null nor is it a DateTime
+				 * object.  Then let's do a set again to ensure that it becomes a DateTime
+				 * object.
+				 *
+				 * @since 4.6.10+
+				 */
+				if (
+					$field_obj instanceof EE_Datetime_Field
+					&& $this->_fields[ $field_name ] !== null
+					&& ! $this->_fields[ $field_name ] instanceof DateTime
+				) {
+					empty($this->_fields[ $field_name ])
+						? $this->set($field_name, time())
+						: $this->set($field_name, $this->_fields[ $field_name ]);
+				}
+			} else {
+				$this->_fields[ $field_name ] = $holder_of_value;
+			}
+			// if we're not in the constructor...
+			// now check if what we set was a primary key
+			if (
+				// note: props_n_values_provided_in_constructor is only set at the END of the constructor
+				$this->_props_n_values_provided_in_constructor
+				&& $field_value
+				&& $field_name === $this->_model->primary_key_name()
+			) {
+				// if so, we want all this object's fields to be filled either with
+				// what we've explicitly set on this model
+				// or what we have in the db
+				// echo "setting primary key!";
+				$fields_on_model = self::_get_model(get_class($this))->field_settings();
+				$obj_in_db       = self::_get_model(get_class($this))->get_one_by_ID($field_value);
+				foreach ($fields_on_model as $field_obj) {
+					if (
+						! array_key_exists($field_obj->get_name(), $this->_props_n_values_provided_in_constructor)
+						&& $field_obj->get_name() !== $field_name
+					) {
+						$this->set($field_obj->get_name(), $obj_in_db->get($field_obj->get_name()));
+					}
+				}
+				// oh this model object has an ID? well make sure its in the entity mapper
+				$this->_model->add_to_entity_map($this);
+			}
+			// let's unset any cache for this field_name from the $_cached_properties property.
+			$this->_clear_cached_property($field_name);
+		} else {
+			throw new EE_Error(
+				sprintf(
+					esc_html__(
+						'A valid EE_Model_Field_Base could not be found for the given field name: %s',
+						'event_espresso'
+					),
+					$field_name
+				)
+			);
+		}
+	}
+
+
+	/**
+	 * Gets the value of the primary key.
+	 * If the object hasn't yet been saved, it should be whatever the model field's default was
+	 * (eg, if this were the EE_Event class, look at the primary key field on EEM_Event and see what its default value
+	 * is. Usually defaults for integer primary keys are 0; string primary keys are usually NULL).
+	 *
+	 * @return mixed, if the primary key is of type INT it'll be an int. Otherwise it could be a string
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function ID()
+	{
+		// now that we know the name of the variable, use a variable variable to get its value and return its
+		if ($this->_model->has_primary_key_field()) {
+			return $this->_fields[ $this->_model->primary_key_name() ];
+		}
+		return $this->_model->get_index_primary_key_string($this->_fields);
+	}
+
+
+	/**
+	 * If a model name is provided (eg Registration), gets the model classname for that model.
+	 * Also works if a model class's classname is provided (eg EE_Registration).
+	 *
+	 * @param null $model_name
+	 * @return string like EEM_Attendee
+	 */
+	private static function _get_model_classname($model_name = null)
+	{
+		return strpos($model_name, 'EE_') === 0
+			? str_replace('EE_', 'EEM_', $model_name)
+			: 'EEM_' . $model_name;
+	}
+
+
+	/**
+	 * Gets the model instance (eg instance of EEM_Attendee) given its classname (eg EE_Attendee)
+	 *
+	 * @param string $model_classname
+	 * @param string $timezone
+	 * @return EEM_Base
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	protected static function _get_model_instance_with_name($model_classname, $timezone = '')
+	{
+		$model_classname = str_replace('EEM_', '', $model_classname);
+		$model           = EE_Registry::instance()->load_model($model_classname);
+		$model->set_timezone($timezone);
+		return $model;
+	}
+
+
+	/**
+	 * This just clears out ONE property if it exists in the cache
+	 *
+	 * @param string $property_name the property to remove if it exists (from the _cached_properties array)
+	 * @return void
+	 */
+	protected function _clear_cached_property($property_name)
+	{
+		unset($this->_cached_properties[ $property_name ]);
+	}
+
+
+	/**
+	 * Gets the EEM_*_Model for this class
+	 *
+	 * @param string $classname
+	 * @param string $timezone
+	 * @return EEM_Base
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	protected static function _get_model($classname, $timezone = '')
+	{
+		// find model for this class
+		if (! $classname) {
+			throw new EE_Error(
+				sprintf(
+					esc_html__(
+						'What were you thinking calling _get_model(%s)?? You need to specify the class name',
+						'event_espresso'
+					),
+					$classname
+				)
+			);
+		}
+		$modelName = self::_get_model_classname($classname);
+		return self::_get_model_instance_with_name($modelName, $timezone);
+	}
+
+
+	/**
+	 * verifies that the specified field is of the correct type
+	 *
+	 * @param string $field_name
+	 * @param string $extra_cache_ref This allows the user to specify an extra cache ref for the given property
+	 *                                (in cases where the same property may be used for different outputs
+	 *                                - i.e. datetime, money etc.)
+	 * @return mixed
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function get($field_name, $extra_cache_ref = null)
+	{
+		return $this->_get_cached_property($field_name, false, $extra_cache_ref);
+	}
+
+
+	/**
+	 * This returns the value cached property if it exists OR the actual property value if the cache doesn't exist.
+	 * This also SETS the cache if we return the actual property!
+	 *
+	 * @param string $field_name       the name of the property we're trying to retrieve
+	 * @param bool   $pretty
+	 * @param string $extra_cache_ref  This allows the user to specify an extra cache ref for the given property
+	 *                                 (in cases where the same property may be used for different outputs
+	 *                                 - i.e. datetime, money etc.)
+	 *                                 It can also accept certain pre-defined "schema" strings
+	 *                                 to define how to output the property.
+	 *                                 see the field's prepare_for_pretty_echoing for what strings can be used
+	 * @return mixed                   whatever the value for the property is we're retrieving
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	protected function _get_cached_property($field_name, $pretty = false, $extra_cache_ref = null)
+	{
+		// verify the field exists
+		$this->_model->field_settings_for($field_name);
+		$cache_type = $pretty ? 'pretty' : 'standard';
+		$cache_type .= ! empty($extra_cache_ref) ? '_' . $extra_cache_ref : '';
+		if (isset($this->_cached_properties[ $field_name ][ $cache_type ])) {
+			return $this->_cached_properties[ $field_name ][ $cache_type ];
+		}
+		$value = $this->_get_fresh_property($field_name, $pretty, $extra_cache_ref);
+		$this->_set_cached_property($field_name, $value, $cache_type);
+		return $value;
+	}
+
+
+	/**
+	 * If the cache didn't fetch the needed item, this fetches it.
+	 *
+	 * @param string $field_name
+	 * @param bool   $pretty
+	 * @param string $extra_cache_ref
+	 * @return mixed
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	protected function _get_fresh_property($field_name, $pretty = false, $extra_cache_ref = null)
+	{
+		$field_obj = $this->_model->field_settings_for($field_name);
+		// If this is an EE_Datetime_Field we need to make sure timezone, formats, and output are correct
+		if ($field_obj instanceof EE_Datetime_Field) {
+			$this->_prepare_datetime_field($field_obj, $pretty, $extra_cache_ref);
+		}
+		if (! isset($this->_fields[ $field_name ])) {
+			$this->_fields[ $field_name ] = null;
+		}
+		return $pretty
+			? $field_obj->prepare_for_pretty_echoing($this->_fields[ $field_name ], $extra_cache_ref)
+			: $field_obj->prepare_for_get($this->_fields[ $field_name ]);
+	}
+
+
+	/**
+	 * For adding an item to the cached_properties property.
+	 *
+	 * @param string      $field_name the property item the corresponding value is for.
+	 * @param mixed       $value      The value we are caching.
+	 * @param string|null $cache_type
+	 * @return void
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	protected function _set_cached_property($field_name, $value, $cache_type = null)
+	{
+		// first make sure this property exists
+		$this->_model->field_settings_for($field_name);
+		$cache_type = empty($cache_type) ? 'standard' : $cache_type;
+		$this->_cached_properties[ $field_name ][ $cache_type ] = $value;
+	}
+
+
+	/**
+	 * set timezone, formats, and output for EE_Datetime_Field objects
+	 *
+	 * @param EE_Datetime_Field $datetime_field
+	 * @param bool              $pretty
+	 * @param null              $date_or_time
+	 * @return void
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 */
+	protected function _prepare_datetime_field(
+		EE_Datetime_Field $datetime_field,
+		$pretty = false,
+		$date_or_time = null
+	) {
+		$datetime_field->set_timezone($this->_timezone);
+		$datetime_field->set_date_format($this->_dt_frmt, $pretty);
+		$datetime_field->set_time_format($this->_tm_frmt, $pretty);
+		// set the output returned
+		switch ($date_or_time) {
+			case 'D':
+				$datetime_field->set_date_time_output('date');
+				break;
+			case 'T':
+				$datetime_field->set_date_time_output('time');
+				break;
+			default:
+				$datetime_field->set_date_time_output();
+		}
+	}
+
+
+	/**
+	 * @param $props_n_values
+	 * @param $classname
+	 * @return mixed bool|EE_Base_Class|EEM_CPT_Base
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	protected static function _get_object_from_entity_mapper($props_n_values, $classname)
+	{
+		// TODO: will not work for Term_Relationships because they have no PK!
+		$primary_id_ref = self::_get_primary_key_name($classname);
+		if (
+			array_key_exists($primary_id_ref, $props_n_values)
+			&& ! empty($props_n_values[ $primary_id_ref ])
+		) {
+			$id = $props_n_values[ $primary_id_ref ];
+			return self::_get_model($classname)->get_from_entity_map($id);
+		}
+		return false;
+	}
+
+
+	/**
+	 * returns the name of the primary key attribute
+	 *
+	 * @param null $classname
+	 * @return string
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws ReflectionException
+	 * @throws ReflectionException
+	 */
+	protected static function _get_primary_key_name($classname = null)
+	{
+		if (! $classname) {
+			throw new EE_Error(
+				sprintf(
+					esc_html__('What were you thinking calling _get_primary_key_name(%s)', 'event_espresso'),
+					$classname
+				)
+			);
+		}
+		return self::_get_model($classname)->get_primary_key_field()->get_name();
+	}
+
+
+	/**
+	 * This is called by child static "new_instance" method and we'll check to see if there is an existing db entry for
+	 * the primary key (if present in incoming values). If there is a key in the incoming array that matches the
+	 * primary key for the model AND it is not null, then we check the db. If there's a an object we return it.  If not
+	 * we return false.
+	 *
+	 * @param array  $props_n_values  incoming array of properties and their values
+	 * @param string $classname          the classname of the child class
+	 * @param string $timezone
+	 * @param array  $date_formats      incoming date_formats in an array where the first value is the
+	 *                                  date_format and the second value is the time format
+	 * @return mixed (EE_Base_Class|bool)
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws ReflectionException
+	 * @throws ReflectionException
+	 */
+	protected static function _check_for_object($props_n_values, $classname, $timezone = '', $date_formats = [])
+	{
+		$existing = null;
+		$model    = self::_get_model($classname, $timezone);
+		if ($model->has_primary_key_field()) {
+			$primary_id_ref = self::_get_primary_key_name($classname);
+			if (
+				array_key_exists($primary_id_ref, $props_n_values)
+				&& ! empty($props_n_values[ $primary_id_ref ])
+			) {
+				$existing = $model->get_one_by_ID($props_n_values[ $primary_id_ref ]);
+			}
+		} elseif ($model->has_all_combined_primary_key_fields($props_n_values)) {
+			// no primary key on this model, but there's still a matching item in the DB
+			$existing = $model->get_one_by_ID(
+				$model->get_index_primary_key_string($props_n_values)
+			);
+		}
+		if ($existing) {
+			$has_date_formats = ! empty($date_formats) && is_array($date_formats)
+								&& isset($date_formats[0], $date_formats[1]);
+			$date_format      = $has_date_formats ? $date_formats[0] : (string) get_option('date_format', 'Y-m-d');
+			$time_format      = $has_date_formats ? $date_formats[1] : (string) get_option('time_format', 'g:i a');
+			// set date formats before setting values
+			$existing->set_date_format($date_format);
+			$existing->set_time_format($time_format);
+			foreach ($props_n_values as $property => $field_value) {
+				$existing->set($property, $field_value);
+			}
+			return $existing;
+		}
+		return false;
+	}
+
+
+	/**
+	 * This sets the internal date format to what is sent in to be used as the new default for the class
+	 * internally instead of wp set date format options
+	 *
+	 * @param string $format should be a format recognizable by PHP date() functions.
+	 * @since 4.6
+	 */
+	public function set_date_format($format)
+	{
+		if ($format !== $this->_dt_frmt) {
+			$this->_dt_frmt = $format;
+			// clear cached_properties because they won't be relevant now.
+			$this->_clear_cached_properties();
+		}
+	}
+
+
+	/**
+	 * This sets the internal time format string to what is sent in to be used as the new default for the
+	 * class internally instead of wp set time format options.
+	 *
+	 * @param string $format should be a format recognizable by PHP date() functions.
+	 * @since 4.6
+	 */
+	public function set_time_format($format)
+	{
+		if ($format !== $this->_tm_frmt) {
+			$this->_tm_frmt = $format;
+			// clear cached_properties because they won't be relevant now.
+			$this->_clear_cached_properties();
+		}
+	}
+
+
+	/**
+	 * This just takes care of clearing out the cached_properties
+	 *
+	 * @return void
+	 */
+	protected function _clear_cached_properties()
+	{
+		$this->_cached_properties = [];
+	}
+
+
+	/**
+	 * Sets whether or not this model object should be allowed to be saved to the DB.
+	 * Normally once this is set to FALSE you wouldn't set it back to TRUE, unless
+	 * you got new information that somehow made you change your mind.
+	 *
+	 * @param boolean $allow_persist
+	 * @return boolean
+	 */
+	public function set_allow_persist($allow_persist)
+	{
+		return $this->_allow_persist = $allow_persist;
+	}
+
+
+	/**
+	 * Gets the field's original value when this object was constructed during this request.
+	 * This can be helpful when determining if a model object has changed or not
+	 *
+	 * @param string $field_name
+	 * @return mixed|null
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function get_original($field_name)
+	{
+		if (
+			isset($this->_props_n_values_provided_in_constructor[ $field_name ])
+			&& $field_settings = $this->_model->field_settings_for($field_name)
+		) {
+			return $field_settings->prepare_for_get($this->_props_n_values_provided_in_constructor[ $field_name ]);
+		}
+		return null;
+	}
+
+
+	/**
+	 * @param EE_Base_Class $obj
+	 * @return string
+	 */
+	public function get_class($obj)
+	{
+		return get_class($obj);
+	}
+
+
+	/**
+	 * Set custom select values for model.
+	 *
+	 * @param array $custom_select_values
+	 */
+	public function setCustomSelectsValues(array $custom_select_values)
+	{
+		$this->custom_selection_results = $custom_select_values;
+	}
+
+
+	/**
+	 * Returns the custom select value for the provided alias if its set.
+	 * If not set, returns null.
+	 *
+	 * @param string $alias
+	 * @return string|int|float|null
+	 */
+	public function getCustomSelect($alias)
+	{
+		return isset($this->custom_selection_results[ $alias ])
+			? $this->custom_selection_results[ $alias ]
+			: null;
+	}
+
+
+	/**
+	 * This sets the field value on the db column if it exists for the given $column_name or
+	 * saves it to EE_Extra_Meta if the given $column_name does not match a db column.
+	 *
+	 * @param string $field_name  Must be the exact column name.
+	 * @param mixed  $field_value The value to set.
+	 * @return int|bool @see EE_Base_Class::update_extra_meta() for return docs.
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @see EE_message::get_column_value for related documentation on the necessity of this method.
+	 */
+	public function set_field_or_extra_meta($field_name, $field_value)
+	{
+		if ($this->_model->has_field($field_name)) {
+			$this->set($field_name, $field_value);
+			return true;
+		}
+		// ensure this object is saved first so that extra meta can be properly related.
+		$this->save();
+		return $this->update_extra_meta($field_name, $field_value);
+	}
+
+
+	/**
+	 *        Saves this object to the database. An array may be supplied to set some values on this
+	 * object just before saving.
+	 *
+	 * @param array $set_cols_n_values keys are field names, values are their new values,
+	 *                                 if provided during the save() method
+	 *                                 (often client code will change the fields' values before calling save)
+	 * @return int                     1 on a successful update or the ID of the new entry on insert;
+	 *                                 0 on failure or if the model object isn't allowed to persist
+	 *                                 (as determined by EE_Base_Class::allow_persist())
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws ReflectionException
+	 * @throws ReflectionException
+	 */
+	public function save($set_cols_n_values = [])
+	{
+		/**
+		 * Filters the fields we're about to save on the model object
+		 *
+		 * @param array         $set_cols_n_values
+		 * @param EE_Base_Class $model_object
+		 */
+		$set_cols_n_values = (array) apply_filters(
+			'FHEE__EE_Base_Class__save__set_cols_n_values',
+			$set_cols_n_values,
+			$this
+		);
+		// set attributes as provided in $set_cols_n_values
+		foreach ($set_cols_n_values as $column => $value) {
+			$this->set($column, $value);
+		}
+		// no changes ? then don't do anything
+		if (! $this->_has_changes && $this->ID() && $this->_model->get_primary_key_field()->is_auto_increment()) {
+			return 0;
+		}
+		/**
+		 * Saving a model object.
+		 * Before we perform a save, this action is fired.
+		 *
+		 * @param EE_Base_Class $model_object the model object about to be saved.
+		 */
+		do_action('AHEE__EE_Base_Class__save__begin', $this);
+		if (! $this->allow_persist()) {
+			return 0;
+		}
+		// now get current attribute values
+		$save_cols_n_values = $this->_fields;
+		// if the object already has an ID, update it. Otherwise, insert it
+		// also: change the assumption about values passed to the model NOT being prepare dby the model object.
+		// They have been
+		$old_assumption_concerning_value_preparation = $this->_model
+			->get_assumption_concerning_values_already_prepared_by_model_object();
+		$this->_model->assume_values_already_prepared_by_model_object(true);
+		// does this model have an autoincrement PK?
+		if ($this->_model->has_primary_key_field()) {
+			if ($this->_model->get_primary_key_field()->is_auto_increment()) {
+				// ok check if it's set, if so: update; if not, insert
+				if (! empty($save_cols_n_values[ $this->_model->primary_key_name() ])) {
+					$results = $this->_model->update_by_ID($save_cols_n_values, $this->ID());
+				} else {
+					unset($save_cols_n_values[ $this->_model->primary_key_name() ]);
+					$results = $this->_model->insert($save_cols_n_values);
+					if ($results) {
+						// if successful, set the primary key
+						// but don't use the normal SET method, because it will check if
+						// an item with the same ID exists in the mapper & db, then
+						// will find it in the db (because we just added it) and THAT object
+						// will get added to the mapper before we can add this one!
+						// but if we just avoid using the SET method, all that headache can be avoided
+						$pk_field_name                   = $this->_model->primary_key_name();
+						$this->_fields[ $pk_field_name ] = $results;
+						$this->_clear_cached_property($pk_field_name);
+						$this->_model->add_to_entity_map($this);
+						$this->_update_cached_related_model_objs_fks();
+					}
+				}
+			} else {
+				// PK is NOT auto-increment
+				// so check if one like it already exists in the db
+				if ($this->_model->exists_by_ID($this->ID())) {
+					if (WP_DEBUG && ! $this->in_entity_map()) {
+						throw new EE_Error(
+							sprintf(
+								esc_html__(
+									'Using a model object %1$s that is NOT in the entity map, can lead to unexpected errors. You should either: %4$s 1. Put it in the entity mapper by calling %2$s %4$s 2. Discard this model object and use what is in the entity mapper %4$s 3. Fetch from the database using %3$s',
+									'event_espresso'
+								),
+								get_class($this),
+								get_class($this->_model) . '::instance()->add_to_entity_map()',
+								get_class($this->_model) . '::instance()->get_one_by_ID()',
+								'<br />'
+							)
+						);
+					}
+					$results = $this->_model->update_by_ID($save_cols_n_values, $this->ID());
+				} else {
+					$results = $this->_model->insert($save_cols_n_values);
+					$this->_update_cached_related_model_objs_fks();
+				}
+			}
+		} else {
+			// there is NO primary key
+			$already_in_db = false;
+			foreach ($this->_model->unique_indexes() as $index) {
+				$uniqueness_where_params = array_intersect_key($save_cols_n_values, $index->fields());
+				if ($this->_model->exists([$uniqueness_where_params])) {
+					$already_in_db = true;
+				}
+			}
+			if ($already_in_db) {
+				$combined_pk_fields_n_values = array_intersect_key(
+					$save_cols_n_values,
+					$this->_model->get_combined_primary_key_fields()
+				);
+				$results                     = $this->_model->update(
+					$save_cols_n_values,
+					$combined_pk_fields_n_values
+				);
+			} else {
+				$results = $this->_model->insert($save_cols_n_values);
+			}
+		}
+		// restore the old assumption about values being prepared by the model object
+		$this->_model->assume_values_already_prepared_by_model_object(
+			$old_assumption_concerning_value_preparation
+		);
+		/**
+		 * After saving the model object this action is called
+		 *
+		 * @param EE_Base_Class $model_object which was just saved
+		 * @param boolean|int   $results      if it were updated, TRUE or FALSE; if it were newly inserted
+		 *                                    the new ID (or 0 if an error occurred and it wasn't updated)
+		 */
+		do_action('AHEE__EE_Base_Class__save__end', $this, $results);
+		$this->_has_changes = false;
+		return $results;
+	}
+
+
+	/**
+	 * Similar to insert_post_meta, adds a record in the Extra_Meta model's table with the given key and value.
+	 * A $previous_value can be specified in case there are many meta rows with the same key
+	 *
+	 * @param string $meta_key
+	 * @param mixed  $meta_value
+	 * @param mixed  $previous_value
+	 * @return bool|int # of records updated (or BOOLEAN if we actually ended up inserting the extra meta row)
+	 *                  NOTE: if the values haven't changed, returns 0
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function update_extra_meta($meta_key, $meta_value, $previous_value = null)
+	{
+		$query_params = [
+			[
+				'EXM_key'  => $meta_key,
+				'OBJ_ID'   => $this->ID(),
+				'EXM_type' => $this->_model->get_this_model_name(),
+			],
+		];
+		if ($previous_value !== null) {
+			$query_params[0]['EXM_value'] = $meta_value;
+		}
+		$existing_rows_like_that = EEM_Extra_Meta::instance()->get_all($query_params);
+		if (! $existing_rows_like_that) {
+			return $this->add_extra_meta($meta_key, $meta_value);
+		}
+		foreach ($existing_rows_like_that as $existing_row) {
+			$existing_row->save(['EXM_value' => $meta_value]);
+		}
+		return count($existing_rows_like_that);
+	}
+
+
+	/**
+	 * Gets whether or not this model object is allowed to persist/be saved to the database.
+	 *
+	 * @return boolean
+	 */
+	public function allow_persist()
+	{
+		return $this->_allow_persist;
+	}
+
+
+	/**
+	 * Updates the foreign key on related models objects pointing to this to have this model object's ID
+	 * as their foreign key.  If the cached related model objects already exist in the db, saves them (so that the DB
+	 * is consistent) Especially useful in case we JUST added this model object ot the database and we want to let its
+	 * cached relations with foreign keys to it know about that change. Eg: we've created a transaction but haven't
+	 * saved it to the db. We also create a registration and don't save it to the DB, but we DO cache it on the
+	 * transaction. Now, when we save the transaction, the registration's TXN_ID will be automatically updated, whether
+	 * or not they exist in the DB (if they do, their DB records will be automatically updated)
+	 *
+	 * @return void
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	protected function _update_cached_related_model_objs_fks()
+	{
+		foreach ($this->_model->relation_settings() as $relation_name => $relation_obj) {
+			if ($relation_obj instanceof EE_Has_Many_Relation) {
+				foreach ($this->get_all_from_cache($relation_name) as $related_model_obj_in_cache) {
+					$fk_to_this = $related_model_obj_in_cache->get_model()->get_foreign_key_to(
+						$this->_model->get_this_model_name()
+					);
+					$related_model_obj_in_cache->set($fk_to_this->get_name(), $this->ID());
+					if ($related_model_obj_in_cache->ID()) {
+						$related_model_obj_in_cache->save();
+					}
+				}
+			}
+		}
+	}
+
+
+	/**
+	 * in_entity_map
+	 * Checks if this model object has been proven to already be in the entity map
+	 *
+	 * @return boolean
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function in_entity_map()
+	{
+		// well, if we looked, did we find it in the entity map?
+		return $this->ID() && $this->_model->get_from_entity_map($this->ID()) === $this;
+	}
+
+
+	/**
+	 * Adds a new extra meta record. If $unique is set to TRUE, we'll first double-check
+	 * no other extra meta for this model object have the same key. Returns TRUE if the
+	 * extra meta row was entered, false if not
+	 *
+	 * @param string  $meta_key
+	 * @param mixed   $meta_value
+	 * @param boolean $unique
+	 * @return boolean
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws ReflectionException
+	 */
+	public function add_extra_meta($meta_key, $meta_value, $unique = false)
+	{
+		if ($unique) {
+			$existing_extra_meta = EEM_Extra_Meta::instance()->get_one(
+				[
+					[
+						'EXM_key'  => $meta_key,
+						'OBJ_ID'   => $this->ID(),
+						'EXM_type' => $this->_model->get_this_model_name(),
+					],
+				]
+			);
+			if ($existing_extra_meta) {
+				return false;
+			}
+		}
+		$new_extra_meta = EE_Extra_Meta::new_instance(
+			[
+				'EXM_key'   => $meta_key,
+				'EXM_value' => $meta_value,
+				'OBJ_ID'    => $this->ID(),
+				'EXM_type'  => $this->_model->get_this_model_name(),
+			]
+		);
+		$new_extra_meta->save();
+		return true;
+	}
+
+
+	/**
+	 * Fetches a single EE_Base_Class on that relation. (If the relation is of type
+	 * BelongsTo, it will only ever have 1 object. However, other relations could have an array of objects)
+	 *
+	 * @param string $relationName
+	 * @return EE_Base_Class[] NOT necessarily indexed by primary keys
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function get_all_from_cache($relationName)
+	{
+		$objects = isset($this->_model_relations[ $relationName ]) ? $this->_model_relations[ $relationName ] : [];
+		// if the result is not an array, but exists, make it an array
+		$objects = is_array($objects) ? $objects : [$objects];
+		// bugfix for https://events.codebasehq.com/projects/event-espresso/tickets/7143
+		// basically, if this model object was stored in the session, and these cached model objects
+		// already have IDs, let's make sure they're in their model's entity mapper
+		// otherwise we will have duplicates next time we call
+		// EE_Registry::instance()->load_model( $relationName )->get_one_by_ID( $result->ID() );
+		$related_model = EE_Registry::instance()->load_model($relationName);
+		foreach ($objects as $model_object) {
+			if ($related_model instanceof EEM_Base && $model_object instanceof EE_Base_Class) {
+				// ensure its in the map if it has an ID; otherwise it will be added to the map when its saved
+				if ($model_object->ID()) {
+					$related_model->add_to_entity_map($model_object);
+				}
+			} else {
+				throw new EE_Error(
+					sprintf(
+						esc_html__(
+							'Error retrieving related model objects. Either $1%s is not a model or $2%s is not a model object',
+							'event_espresso'
+						),
+						$relationName,
+						gettype($model_object)
+					)
+				);
+			}
+		}
+		$this->updateTimezoneOnRelated($objects);
+		return $objects;
+	}
+
+
+	/**
+	 * This retrieves the value of the db column set on this class or if that's not present
+	 * it will attempt to retrieve from extra_meta if found.
+	 * Example Usage:
+	 * Via EE_Message child class:
+	 * Due to the dynamic nature of the EE_messages system, EE_messengers will always have a "to",
+	 * "from", "subject", and "content" field (as represented in the EE_Message schema), however they may
+	 * also have additional main fields specific to the messenger.  The system accommodates those extra
+	 * fields through the EE_Extra_Meta table.  This method allows for EE_messengers to retrieve the
+	 * value for those extra fields dynamically via the EE_message object.
+	 *
+	 * @param string $field_name expecting the fully qualified field name.
+	 * @return mixed|null  value for the field if found.  null if not found.
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function get_field_or_extra_meta($field_name)
+	{
+		// if this isn't a column in the main table, then see if it is in the extra meta.
+		return $this->_model->has_field($field_name)
+			? $this->get($field_name)
+			: $this->get_extra_meta($field_name, true);
+	}
+
+
+	/**
+	 * Gets the extra meta with the given meta key. If you specify "single" we just return 1, otherwise
+	 * an array of everything found. Requires that this model actually have a relation of type EE_Has_Many_Any_Relation.
+	 * You can specify $default is case you haven't found the extra meta
+	 *
+	 * @param string  $meta_key
+	 * @param boolean $single
+	 * @param mixed   $default if we don't find anything, what should we return?
+	 * @return mixed single value if $single; array if ! $single
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function get_extra_meta($meta_key, $single = false, $default = null)
+	{
+		if ($single) {
+			$result = $this->get_first_related(
+				'Extra_Meta',
+				[['EXM_key' => $meta_key]]
+			);
+			if ($result instanceof EE_Extra_Meta) {
+				return $result->value();
+			}
+		} else {
+			$results = $this->get_many_related(
+				'Extra_Meta',
+				[['EXM_key' => $meta_key]]
+			);
+			if ($results) {
+				$values = [];
+				foreach ($results as $result) {
+					if ($result instanceof EE_Extra_Meta) {
+						$values[ $result->ID() ] = $result->value();
+					}
+				}
+				return $values;
+			}
+		}
+		// if nothing discovered yet return default.
+		return apply_filters(
+			'FHEE__EE_Base_Class__get_extra_meta__default_value',
+			$default,
+			$meta_key,
+			$single,
+			$this
+		);
+	}
+
+
+	/**
+	 * Gets the first (ie, one) related model object of the specified type.
+	 *
+	 * @param string $relationName key in the model's _model_relations array
+	 * @param array  $query_params
+	 * @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
+	 * @return EE_Base_Class (not an array, a single object)
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function get_first_related($relationName, $query_params = [])
+	{
+		$model_relation = $this->_model->related_settings_for($relationName);
+		if (! $this->ID()) {
+			// this doesn't exist in the DB,
+			// but maybe the relation type is "belongs to" and the related object might
+			if ($model_relation instanceof EE_Belongs_To_Relation) {
+				return $this->_model->get_first_related(
+					$this,
+					$relationName,
+					$query_params
+				);
+			}
+			// this doesn't exist in the DB and apparently the thing it belongs to doesn't either,
+			// just get what's cached on this object
+			return $this->get_one_from_cache($relationName);
+		}
+		// this exists in the DB, get from the cache OR the DB
+		// if they've provided some query parameters, don't bother trying to cache the result
+		// also make sure we're not caching the result of get_first_related
+		// on a relation which should have an array of objects (because the cache might have an array of objects)
+		if (
+			$query_params
+			|| ! $model_relation instanceof EE_Belongs_To_Relation
+		) {
+			return $this->_model->get_first_related(
+				$this,
+				$relationName,
+				$query_params
+			);
+		}
+		// check if we've already cached the result of this query
+		$cached_result = $this->get_one_from_cache($relationName);
+		if ($cached_result) {
+			return $cached_result;
+		}
+		$related_model_object = $this->_model->get_first_related(
+			$this,
+			$relationName,
+			$query_params
+		);
+		$this->cache($relationName, $related_model_object);
+		return $related_model_object;
+	}
+
+
+	/**
+	 * Gets all the related model objects of the specified type. Eg, if the current class if
+	 * EE_Event, you could call $this->get_many_related('Registration') to get an array of all the
+	 * EE_Registration objects which related to this event. Note: by default, we remove the "default query params"
+	 * because we want to get even deleted items etc.
+	 *
+	 * @param string $relationName key in the model's _model_relations array
+	 * @param array  $query_params
+	 * @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md#0-where-conditions
+	 * @return EE_Base_Class[]     Results not necessarily indexed by IDs, because some results might not have primary
+	 *                             keys or might not be saved yet. Consider using EEM_Base::get_IDs() on these
+	 *                             results if you want IDs
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function get_many_related($relationName, $query_params = [])
+	{
+		if (! $this->ID()) {
+			// this doesn't exist in the DB, so just get the related things from the cache
+			return $this->get_all_from_cache($relationName);
+		}
+		// this exists in the DB, so get the related things from either the cache or the DB
+		// if there are query parameters, forget about caching the related model objects.
+		if ($query_params) {
+			return $this->_model->get_all_related(
+				$this,
+				$relationName,
+				$query_params
+			);
+		}
+		// did we already cache the result of this query?
+		$cached_results = $this->get_all_from_cache($relationName);
+		if ($cached_results) {
+			return $cached_results;
+		}
+		$related_model_objects = $this->_model->get_all_related(
+			$this,
+			$relationName,
+			$query_params
+		);
+		// if no query parameters were passed, then we got all the related model objects
+		// for that relation. We can cache them then.
+		foreach ($related_model_objects as $related_model_object) {
+			$this->cache($relationName, $related_model_object);
+		}
+		$this->updateTimezoneOnRelated($related_model_objects);
+		return $related_model_objects;
+	}
+
+
+	/**
+	 * Fetches a single EE_Base_Class on that relation. (If the relation is of type
+	 * BelongsTo, it will only ever have 1 object. However, other relations could have an array of objects)
+	 *
+	 * @param string $relationName
+	 * @return EE_Base_Class
+	 */
+	public function get_one_from_cache($relationName)
+	{
+		$cached_array_or_object = isset($this->_model_relations[ $relationName ])
+			? $this->_model_relations[ $relationName ]
+			: null;
+		if (is_array($cached_array_or_object)) {
+			$cached_array_or_object = array_shift($cached_array_or_object);
+		}
+		$this->updateTimezoneOnRelated($cached_array_or_object);
+		return $cached_array_or_object;
+	}
+
+
+	/**
+	 * cache
+	 * stores the passed model object on the current model object.
+	 * In certain circumstances, we can use this cached model object instead of querying for another one entirely.
+	 *
+	 * @param string        $relationName    one of the keys in the _model_relations array on the model. Eg
+	 *                                       'Registration' associated with this model object
+	 * @param EE_Base_Class $object_to_cache that has a relation to this model object. (Eg, if this is a Transaction,
+	 *                                       that could be a payment or a registration)
+	 * @param null          $cache_id        a string or number that will be used as the key for any Belongs_To_Many
+	 *                                       items which will be stored in an array on this object
+	 * @return mixed    index into cache, or just TRUE if the relation is of type Belongs_To (because there's only one
+	 *                                       related thing, no array)
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function cache($relationName = '', $object_to_cache = null, $cache_id = null)
+	{
+		// its entirely possible that there IS no related object yet in which case there is nothing to cache.
+		if (! $object_to_cache instanceof EE_Base_Class) {
+			return false;
+		}
+		// also get "how" the object is related, or throw an error
+		if (! $relationship_to_model = $this->_model->related_settings_for($relationName)) {
+			throw new EE_Error(
+				sprintf(
+					esc_html__('There is no relationship to %s on a %s. Cannot cache it', 'event_espresso'),
+					$relationName,
+					get_class($this)
+				)
+			);
+		}
+		// how many things are related ?
+		if ($relationship_to_model instanceof EE_Belongs_To_Relation) {
+			// if it's a "belongs to" relationship, then there's only one related model object
+			// eg, if this is a registration, there's only 1 attendee for it
+			// so for these model objects just set it to be cached
+			$this->_model_relations[ $relationName ] = $object_to_cache;
+			return true;
+		}
+		// otherwise, this is the "many" side of a one to many relationship,
+		// so we'll add the object to the array of related objects for that type.
+		// eg: if this is an event, there are many registrations for that event,
+		// so we cache the registrations in an array
+		if (! is_array($this->_model_relations[ $relationName ])) {
+			// if for some reason, the cached item is a model object,
+			// then stick that in the array, otherwise start with an empty array
+			$this->_model_relations[ $relationName ] = $this->_model_relations[ $relationName ] instanceof EE_Base_Class
+				? [$this->_model_relations[ $relationName ]]
+				: [];
+		}
+		// first check for a cache_id which is normally empty
+		if (! empty($cache_id)) {
+			// if the cache_id exists, then it means we are purposely trying to cache this
+			// with a known key that can then be used to retrieve the object later on
+			$this->_model_relations[ $relationName ][ $cache_id ] = $object_to_cache;
+			return $cache_id;
+		}
+		if ($object_to_cache->ID()) {
+			// OR the cached object originally came from the db, so let's just use it's PK for an ID
+			$this->_model_relations[ $relationName ][ $object_to_cache->ID() ] = $object_to_cache;
+			return $object_to_cache->ID();
+		}
+		// OR it's a new object with no ID, so just throw it in the array with an auto-incremented ID
+		$this->_model_relations[ $relationName ][] = $object_to_cache;
+		// move the internal pointer to the end of the array
+		end($this->_model_relations[ $relationName ]);
+		// and grab the key so that we can return it
+		return key($this->_model_relations[ $relationName ]);
+	}
+
+
+	/**
+	 * This just returns whatever is set for the current timezone.
+	 *
+	 * @return string timezone string
+	 */
+	public function get_timezone()
+	{
+		if (empty($this->_timezone)) {
+			$this->set_timezone();
+		}
+		return $this->_timezone;
+	}
+
+
+	/**
+	 * See $_timezone property for description of what the timezone property is for.  This SETS the timezone internally
+	 * for being able to reference what timezone we are running conversions on when converting TO the internal timezone
+	 * (UTC Unix Timestamp) for the object OR when converting FROM the internal timezone (UTC Unix Timestamp). This is
+	 * available to all child classes that may be using the EE_Datetime_Field for a field data type.
+	 *
+	 * @param string $timezone A valid timezone string as described by @link http://www.php.net/manual/en/timezones.php
+	 * @param bool   $only_if_not_set if true and $this->_timezone already has a value, then will not do anything
+	 * @return void
+	 */
+	public function set_timezone($timezone = '', $only_if_not_set = false)
+	{
+		static $set_in_progress = false;
+		// don't update the timezone if it's already set ?
+		if (($only_if_not_set && $this->_timezone !== '') ) {
+			return;
+		}
+		$valid_timezone = ! empty($timezone) && $this->_timezone && $timezone !== $this->_timezone
+			? EEH_DTT_Helper::get_valid_timezone_string($timezone)
+			: $this->_timezone;
+		// do NOT set the timezone if we are already in the process of setting the timezone
+		// OR the existing timezone is already set and the incoming value is nothing (which gets set to default TZ)
+		// OR the existing timezone is already set and the validated value is the same as the existing timezone
+		if (
+			$set_in_progress
+			|| (
+				! empty($this->_timezone)
+				&& (
+					empty($timezone) || $valid_timezone === $this->_timezone
+				)
+			)
+		) {
+			return;
+		}
+		$set_in_progress = true;
+		$this->_timezone = $valid_timezone ? $valid_timezone : EEH_DTT_Helper::get_valid_timezone_string();
+		$TZ = new DateTimeZone($this->_timezone);
+		// make sure we clear all cached properties because they won't be relevant now
+		$this->_clear_cached_properties();
+		// make sure we update field settings and the date for all EE_Datetime_Fields
+		$model_fields = $this->_model->field_settings();
+		foreach ($model_fields as $field_name => $field_obj) {
+			if ($field_obj instanceof EE_Datetime_Field) {
+				$field_obj->set_timezone($this->_timezone);
+				if (isset($this->_fields[ $field_name ]) && $this->_fields[ $field_name ] instanceof DateTime) {
+					EEH_DTT_Helper::setTimezone($this->_fields[ $field_name ], $TZ);
+				}
+			}
+		}
+		$set_in_progress = false;
+	}
+
+
+	/**
+	 * @param array|EE_Base_Class $related
+	 * @since $VID:$
+	 */
+	private function updateTimezoneOnRelated($related)
+	{
+		if ($related instanceof EE_Base_Class && $related->get_timezone() !== $this->_timezone) {
+			$related->set_timezone($this->_timezone);
+			return;
+		}
+		if (is_array($related)) {
+			foreach ($related as $object) {
+				$this->updateTimezoneOnRelated($object);
+			}
+		}
+	}
+
+
+	/**
+	 * This returns the current internal set format for the date and time formats.
+	 *
+	 * @param bool $full           if true (default), then return the full format.  Otherwise will return an array
+	 *                             where the first value is the date format and the second value is the time format.
+	 * @return mixed string|array
+	 */
+	public function get_format($full = true)
+	{
+		return $full ? $this->_dt_frmt . ' ' . $this->_tm_frmt : [$this->_dt_frmt, $this->_tm_frmt];
+	}
+
+
+	/**
+	 * update_cache_after_object_save
+	 * Allows a cached item to have it's cache ID (within the array of cached items) reset using the new ID it has
+	 * obtained after being saved to the db
+	 *
+	 * @param string        $relationName       - the type of object that is cached
+	 * @param EE_Base_Class $newly_saved_object - the newly saved object to be re-cached
+	 * @param string        $current_cache_id   - the ID that was used when originally caching the object
+	 * @return boolean TRUE on success, FALSE on fail
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws EE_Error
+	 */
+	public function update_cache_after_object_save(
+		$relationName,
+		EE_Base_Class $newly_saved_object,
+		$current_cache_id = ''
+	) {
+		// verify that incoming object is of the correct type
+		$obj_class = 'EE_' . $relationName;
+		if (! $newly_saved_object instanceof $obj_class) {
+			return false;
+		}
 		$this->updateTimezoneOnRelated($newly_saved_object);
-        /* @type EE_Base_Class $newly_saved_object */
-        // now get the type of relation
-        $relationship_to_model = $this->_model->related_settings_for($relationName);
-        // if this is a 1:1 relationship
-        if ($relationship_to_model instanceof EE_Belongs_To_Relation) {
-            // then just replace the cached object with the newly saved object
-            $this->_model_relations[ $relationName ] = $newly_saved_object;
-            return true;
-        }
-        // or if it's some kind of sordid feral polyamorous relationship...
-        if (
-            is_array($this->_model_relations[ $relationName ])
-            && isset($this->_model_relations[ $relationName ][ $current_cache_id ])
-        ) {
-            // then remove the current cached item
-            unset($this->_model_relations[ $relationName ][ $current_cache_id ]);
-            // and cache the newly saved object using it's new ID
-            $this->_model_relations[ $relationName ][ $newly_saved_object->ID() ] = $newly_saved_object;
-            return true;
-        }
-        return false;
-    }
-
-
-    /**
-     * Returns the next x number of EE_Base_Class objects in sequence from this object as found in the database
-     * matching the given query conditions.
-     *
-     * @param null  $field_to_order_by  What field is being used as the reference point.
-     * @param int   $limit              How many objects to return.
-     * @param array $query_params       Any additional conditions on the query.
-     * @param null  $columns_to_select  If left null, then an array of EE_Base_Class objects is returned, otherwise
-     *                                  you can indicate just the columns you want returned
-     * @return array|EE_Base_Class[]
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function next_x($field_to_order_by = null, $limit = 1, $query_params = [], $columns_to_select = null)
-    {
-        $field         = empty($field_to_order_by) && $this->_model->has_primary_key_field()
-            ? $this->_model->get_primary_key_field()->get_name()
-            : $field_to_order_by;
-        $current_value = ! empty($field) ? $this->get($field) : null;
-        if (empty($field) || empty($current_value)) {
-            return [];
-        }
-        return $this->_model->next_x($current_value, $field, $limit, $query_params, $columns_to_select);
-    }
-
-
-    /**
-     * Returns the previous x number of EE_Base_Class objects in sequence from this object as found in the database
-     * matching the given query conditions.
-     *
-     * @param null  $field_to_order_by  What field is being used as the reference point.
-     * @param int   $limit              How many objects to return.
-     * @param array $query_params       Any additional conditions on the query.
-     * @param null  $columns_to_select  If left null, then an array of EE_Base_Class objects is returned, otherwise
-     *                                  you can indicate just the columns you want returned
-     * @return array|EE_Base_Class[]
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function previous_x(
-        $field_to_order_by = null,
-        $limit = 1,
-        $query_params = [],
-        $columns_to_select = null
-    ) {
-        $field         = empty($field_to_order_by) && $this->_model->has_primary_key_field()
-            ? $this->_model->get_primary_key_field()->get_name()
-            : $field_to_order_by;
-        $current_value = ! empty($field) ? $this->get($field) : null;
-        if (empty($field) || empty($current_value)) {
-            return [];
-        }
-        return $this->_model->previous_x($current_value, $field, $limit, $query_params, $columns_to_select);
-    }
-
-
-    /**
-     * Returns the next EE_Base_Class object in sequence from this object as found in the database
-     * matching the given query conditions.
-     *
-     * @param null  $field_to_order_by  What field is being used as the reference point.
-     * @param array $query_params       Any additional conditions on the query.
-     * @param null  $columns_to_select  If left null, then an array of EE_Base_Class objects is returned, otherwise
-     *                                  you can indicate just the columns you want returned
-     * @return array|EE_Base_Class
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function next($field_to_order_by = null, $query_params = [], $columns_to_select = null)
-    {
-        $field         = empty($field_to_order_by) && $this->_model->has_primary_key_field()
-            ? $this->_model->get_primary_key_field()->get_name()
-            : $field_to_order_by;
-        $current_value = ! empty($field) ? $this->get($field) : null;
-        if (empty($field) || empty($current_value)) {
-            return [];
-        }
-        return $this->_model->next($current_value, $field, $query_params, $columns_to_select);
-    }
-
-
-    /**
-     * Returns the previous EE_Base_Class object in sequence from this object as found in the database
-     * matching the given query conditions.
-     *
-     * @param null  $field_to_order_by  What field is being used as the reference point.
-     * @param array $query_params       Any additional conditions on the query.
-     * @param null  $columns_to_select  If left null, then an EE_Base_Class object is returned, otherwise
-     *                                  you can indicate just the column you want returned
-     * @return array|EE_Base_Class
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function previous($field_to_order_by = null, $query_params = [], $columns_to_select = null)
-    {
-        $field         = empty($field_to_order_by) && $this->_model->has_primary_key_field()
-            ? $this->_model->get_primary_key_field()->get_name()
-            : $field_to_order_by;
-        $current_value = ! empty($field) ? $this->get($field) : null;
-        if (empty($field) || empty($current_value)) {
-            return [];
-        }
-        return $this->_model->previous($current_value, $field, $query_params, $columns_to_select);
-    }
-
-
-    /**
-     * This is used to return the internal DateTime object used for a field that is a
-     * EE_Datetime_Field.
-     *
-     * @param string $field_name               The field name retrieving the DateTime object.
-     * @return mixed null | false | DateTime  If the requested field is NOT a EE_Datetime_Field then
-     * @throws EE_Error an error is set and false returned.  If the field IS an
-     *                                         EE_Datetime_Field and but the field value is null, then
-     *                                         just null is returned (because that indicates that likely
-     *                                         this field is nullable).
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function get_DateTime_object($field_name)
-    {
-        $field_settings = $this->_model->field_settings_for($field_name);
-        if (! $field_settings instanceof EE_Datetime_Field) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'The field %s is not an EE_Datetime_Field field.  There is no DateTime object stored on this field type.',
-                        'event_espresso'
-                    ),
-                    $field_name
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        return isset($this->_fields[ $field_name ]) && $this->_fields[ $field_name ] instanceof DateTime
-            ? clone $this->_fields[ $field_name ]
-            : null;
-    }
-
-
-
-
-    /**
-     * NOTE ABOUT BELOW:
-     * These convenience date and time setters are for setting date and time independently.  In other words you might
-     * want to change the time on a datetime_field but leave the date the same (or vice versa). IF on the other hand
-     * you want to set both date and time at the same time, you can just use the models default set($field_name,$value)
-     * method and make sure you send the entire datetime value for setting.
-     */
-
-
-    /**
-     * Exactly like e(), echoes out the field, but sets its schema to 'form_input', so that it
-     * can be easily used as the value of form input.
-     *
-     * @param string $field_name
-     * @return void
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function f($field_name)
-    {
-        $this->e($field_name, 'form_input');
-    }
-
-
-    /**
-     * To be used in template to immediately echo out the value, and format it for output.
-     * Eg, should call stripslashes and whatnot before echoing
-     *
-     * @param string $field_name      the name of the field as it appears in the DB
-     * @param string $extra_cache_ref This allows the user to specify an extra cache ref for the given property
-     *                                (in cases where the same property may be used for different outputs
-     *                                - i.e. datetime, money etc.)
-     * @return void
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function e($field_name, $extra_cache_ref = null)
-    {
-        echo $this->get_pretty($field_name, $extra_cache_ref);
-    }
-
-
-    /**
-     * Gets a pretty view of the field's value. $extra_cache_ref can specify different formats for this.
-     * The $extra_cache_ref will be passed to the model field's prepare_for_pretty_echoing, so consult the field's class
-     * to see what options are available.
-     *
-     * @param string $field_name
-     * @param string $extra_cache_ref This allows the user to specify an extra cache ref for the given property
-     *                                (in cases where the same property may be used for different outputs
-     *                                - i.e. datetime, money etc.)
-     * @return mixed
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function get_pretty($field_name, $extra_cache_ref = null)
-    {
-        return $this->_get_cached_property($field_name, true, $extra_cache_ref);
-    }
-
-
-    /**
-     * Same as `f()` but just returns the value instead of echoing it
-     *
-     * @param string $field_name
-     * @return string
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function get_f($field_name)
-    {
-        return (string) $this->get_pretty($field_name, 'form_input');
-    }
-
-
-    /**
-     * below are wrapper functions for the various datetime outputs that can be obtained for JUST returning the date
-     * portion of a datetime value. (note the only difference between get_ and e_ is one returns the value and the
-     * other echoes the pretty value for dtt)
-     *
-     * @param string $field_name name of model object datetime field holding the value
-     * @param string $format     format for the date returned (if NULL we use default in dt_frmt property)
-     * @return string            datetime value formatted
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function get_date($field_name, $format = '')
-    {
-        return $this->_get_datetime($field_name, $format, null, 'D');
-    }
-
-
-    /**
-     * This simply returns the datetime for the given field name
-     * Note: this protected function is called by the wrapper get_date or get_time or get_datetime functions
-     * (and the equivalent e_date, e_time, e_datetime).
-     *
-     * @param string  $field_name    Field on the instantiated EE_Base_Class child object
-     * @param string  $date_format   valid datetime format used for date
-     *                               (if '' then we just use the default on the field,
-     *                               if NULL we use the last-used format)
-     * @param string  $time_format   Same as above except this is for time format
-     * @param string  $date_or_time  if NULL then both are returned, otherwise "D" = only date and "T" = only time.
-     * @param boolean $echo          Whether the dtt is echoing using pretty echoing or just returned using vanilla get
-     * @return string|bool|EE_Error string on success, FALSE on fail, or EE_Error Exception is thrown
-     *                               if field is not a valid dtt field, or void if echoing
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    protected function _get_datetime(
-        $field_name,
-        $date_format = '',
-        $time_format = '',
-        $date_or_time = '',
-        $echo = false
-    ) {
-        // clear cached property
-        $this->_clear_cached_property($field_name);
-        // reset format properties because they are used in get()
-        $this->_dt_frmt = $date_format !== '' ? $date_format : $this->_dt_frmt;
-        $this->_tm_frmt = $time_format !== '' ? $time_format : $this->_tm_frmt;
-        if ($echo) {
-            $this->e($field_name, $date_or_time);
-            return '';
-        }
-        return $this->get($field_name, $date_or_time);
-    }
-
-
-    /**
-     * @param        $field_name
-     * @param string $format
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function e_date($field_name, $format = '')
-    {
-        $this->_get_datetime($field_name, $format, null, 'D', true);
-    }
-
-
-    /**
-     * below are wrapper functions for the various datetime outputs that can be obtained for JUST returning the time
-     * portion of a datetime value. (note the only difference between get_ and e_ is one returns the value and the
-     * other echoes the pretty value for dtt)
-     *
-     * @param string $field_name name of model object datetime field holding the value
-     * @param string $format     format for the time returned ( if NULL we use default in tm_frmt property)
-     * @return string             datetime value formatted
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function get_time($field_name, $format = '')
-    {
-        return $this->_get_datetime($field_name, null, $format, 'T');
-    }
-
-
-    /**
-     * @param        $field_name
-     * @param string $format
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function e_time($field_name, $format = '')
-    {
-        $this->_get_datetime($field_name, null, $format, 'T', true);
-    }
-
-
-    /**
-     * below are wrapper functions for the various datetime outputs that can be obtained for returning the date AND
-     * time portion of a datetime value. (note the only difference between get_ and e_ is one returns the value and the
-     * other echoes the pretty value for dtt)
-     *
-     * @param string $field_name  name of model object datetime field holding the value
-     * @param string $date_format format for the date returned (if NULL we use default in dt_frmt property)
-     * @param string $time_format format for the time returned (if NULL we use default in tm_frmt property)
-     * @return string             datetime value formatted
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function get_datetime($field_name, $date_format = '', $time_format = '')
-    {
-        return $this->_get_datetime($field_name, $date_format, $time_format);
-    }
-
-
-    /**
-     * @param string $field_name
-     * @param string $date_format
-     * @param string $time_format
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function e_datetime($field_name, $date_format = '', $time_format = '')
-    {
-        $this->_get_datetime($field_name, $date_format, $time_format, null, true);
-    }
-
-
-    /**
-     * Get the i8ln value for a date using the WordPress
-     *
-     * @param string $field_name The EE_Datetime_Field reference for the date being retrieved.
-     * @param string $format     PHP valid date/time string format.
-     *                           If none is provided then the internal set format on the object will be used.
-     * @return string Date and time string in set locale or false if no field exists for the given
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     *                           field name.
-     * @see date_i18n function.
-     */
-    public function get_i18n_datetime($field_name, $format = '')
-    {
-        $format = empty($format) ? $this->_dt_frmt . ' ' . $this->_tm_frmt : $format;
-        return date_i18n(
-            $format,
-            EEH_DTT_Helper::get_timestamp_with_offset(
-                $this->get_raw($field_name),
-                $this->get_timezone()
-            )
-        );
-    }
-
-
-    /**
-     * This method simply returns the RAW unprocessed value for the given property in this class
-     *
-     * @param string $field_name A valid field name
-     * @return mixed              Whatever the raw value stored on the property is.
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error if fieldSettings is misconfigured or the field doesn't exist.
-     */
-    public function get_raw($field_name)
-    {
-        $field_settings = $this->_model->field_settings_for($field_name);
-        return $field_settings instanceof EE_Datetime_Field && $this->_fields[ $field_name ] instanceof DateTime
-            ? $this->_fields[ $field_name ]->format('U')
-            : $this->_fields[ $field_name ];
-    }
-
-
-    /**
-     * This will return a timestamp for the website timezone
-     * but ONLY when the current website timezone is different
-     * than the timezone set for the website.
-     * NOTE, this currently only works well with methods that return values.
-     * If you use it with methods that echo values
-     * the $_timestamp property may not get reset to its original value
-     * and that could lead to some unexpected results!
-     *
-     * @param string       $field_name  This is the name of the field on the object that contains the date/time
-     *                                  value being returned.
-     * @param string       $callback    must match a valid method in this class (defaults to get_datetime)
-     * @param array|string $args        This is the arguments that will be passed to the callback.
-     * @param string       $prepend     You can include something to prepend on the timestamp
-     * @param string       $append      You can include something to append on the timestamp
-     * @return string timestamp
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function display_in_my_timezone(
-        $field_name,
-        $callback = 'get_datetime',
-        $args = null,
-        $prepend = '',
-        $append = ''
-    ) {
-        $timezone = EEH_DTT_Helper::get_timezone();
-        if ($timezone === $this->_timezone) {
-            return '';
-        }
-        $original_timezone = $this->_timezone;
-        $this->set_timezone($timezone);
-        $fn   = (array) $field_name;
-        $args = array_merge($fn, (array) $args);
-        if (! method_exists($this, $callback)) {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__(
-                        'The method named "%s" given as the callback param in "display_in_my_timezone" does not exist.  Please check your spelling',
-                        'event_espresso'
-                    ),
-                    $callback
-                )
-            );
-        }
-        $args   = (array) $args;
-        $return = $prepend . call_user_func_array([$this, $callback], $args) . $append;
-        $this->set_timezone($original_timezone);
-        return $return;
-    }
-
-
-    /**
-     * Deletes this model object.
-     * This calls the `EE_Base_Class::_delete` method.  Child classes wishing to change default behaviour should
-     * override
-     * `EE_Base_Class::_delete` NOT this class.
-     *
-     * @return boolean | int
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function delete()
-    {
-        /**
-         * Called just before the `EE_Base_Class::_delete` method call.
-         * Note:
-         * `EE_Base_Class::_delete` might be overridden by child classes so any client code hooking into these actions
-         * should be aware that `_delete` may not always result in a permanent delete.
-         * For example, `EE_Soft_Delete_Base_Class::_delete`
-         * soft deletes (trash) the object and does not permanently delete it.
-         *
-         * @param EE_Base_Class $model_object about to be 'deleted'
-         */
-        do_action('AHEE__EE_Base_Class__delete__before', $this);
-        $result = $this->_delete();
-        /**
-         * Called just after the `EE_Base_Class::_delete` method call.
-         * Note:
-         * `EE_Base_Class::_delete` might be overridden by child classes so any client code hooking into these actions
-         * should be aware that `_delete` may not always result in a permanent delete.
-         * For example `EE_Soft_Base_Class::_delete`
-         * soft deletes (trash) the object and does not permanently delete it.
-         *
-         * @param EE_Base_Class $model_object that was just 'deleted'
-         * @param boolean       $result
-         */
-        do_action('AHEE__EE_Base_Class__delete__end', $this, $result);
-        return $result;
-    }
-
-
-    /**
-     * Calls the specific delete method for the instantiated class.
-     * This method is called by the public `EE_Base_Class::delete` method.  Any child classes desiring to override
-     * default functionality for "delete" (which is to call `permanently_delete`) should override this method NOT
-     * `EE_Base_Class::delete`
-     *
-     * @return bool|int
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    protected function _delete()
-    {
-        return $this->delete_permanently();
-    }
-
-
-    /**
-     * Deletes this model object permanently from db
-     * (but keep in mind related models may block the delete and return an error)
-     *
-     * @return bool | int
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function delete_permanently()
-    {
-        /**
-         * Called just before HARD deleting a model object
-         *
-         * @param EE_Base_Class $model_object about to be 'deleted'
-         */
-        do_action('AHEE__EE_Base_Class__delete_permanently__before', $this);
-        $result = $this->_model->delete_permanently_by_ID($this->ID());
-        $this->refresh_cache_of_related_objects();
-        /**
-         * Called just after HARD deleting a model object
-         *
-         * @param EE_Base_Class $model_object that was just 'deleted'
-         * @param boolean       $result
-         */
-        do_action('AHEE__EE_Base_Class__delete_permanently__end', $this, $result);
-        return $result;
-    }
-
-
-    /**
-     * When this model object is deleted, it may still be cached on related model objects. This clears the cache of
-     * related model objects
-     *
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function refresh_cache_of_related_objects()
-    {
-        foreach ($this->_model->relation_settings() as $relation_name => $relation_obj) {
-            if (! empty($this->_model_relations[ $relation_name ])) {
-                $related_objects = $this->_model_relations[ $relation_name ];
-                if ($relation_obj instanceof EE_Belongs_To_Relation) {
-                    // this relation only stores a single model object, not an array
-                    // but let's make it consistent
-                    $related_objects = [$related_objects];
-                }
-                foreach ($related_objects as $related_object) {
-                    // only refresh their cache if they're in memory
-                    if ($related_object instanceof EE_Base_Class) {
-                        $related_object->clear_cache(
-                            $this->_model->get_this_model_name(),
-                            $this
-                        );
-                    }
-                }
-            }
-        }
-    }
-
-
-    /**
-     * Forgets the cached model of the given relation Name. So the next time we request it,
-     * we will fetch it again from the database. (Handy if you know it's changed somehow).
-     * If a specific object is supplied, and the relationship to it is either a HasMany or HABTM,
-     * then only remove that one object from our cached array. Otherwise, clear the entire list
-     *
-     * @param string $relationName                         one of the keys in the _model_relations array on the model.
-     *                                                     Eg 'Registration'
-     * @param mixed  $object_to_remove_or_index_into_array or an index into the array of cached things, or NULL
-     *                                                     if you intend to use $clear_all = TRUE, or the relation only
-     *                                                     has 1 object anyways (ie, it's a BelongsToRelation)
-     * @param bool   $clear_all                            This flags clearing the entire cache relation property if
-     *                                                     this is HasMany or HABTM.
-     * @return EE_Base_Class | boolean from which was cleared from the cache, or true if we requested to remove a
-     *                                                     relation from all
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function clear_cache($relationName, $object_to_remove_or_index_into_array = null, $clear_all = false)
-    {
-        $relationship_to_model = $this->_model->related_settings_for($relationName);
-        $index_in_cache        = '';
-        if (! $relationship_to_model) {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__('There is no relationship to %s on a %s. Cannot clear that cache', 'event_espresso'),
-                    $relationName,
-                    get_class($this)
-                )
-            );
-        }
-        if ($clear_all) {
-            $obj_removed                             = true;
-            $this->_model_relations[ $relationName ] = null;
-        } elseif ($relationship_to_model instanceof EE_Belongs_To_Relation) {
-            $obj_removed                             = $this->_model_relations[ $relationName ];
-            $this->_model_relations[ $relationName ] = null;
-        } else {
-            if (
-                $object_to_remove_or_index_into_array instanceof EE_Base_Class
-                && $object_to_remove_or_index_into_array->ID()
-            ) {
-                $index_in_cache = $object_to_remove_or_index_into_array->ID();
-                if (
-                    is_array($this->_model_relations[ $relationName ])
-                    && ! isset($this->_model_relations[ $relationName ][ $index_in_cache ])
-                ) {
-                    $index_found_at = null;
-                    // find this object in the array even though it has a different key
-                    foreach ($this->_model_relations[ $relationName ] as $index => $obj) {
-                        /** @noinspection TypeUnsafeComparisonInspection */
-                        if (
-                            $obj instanceof EE_Base_Class
-                            && (
-                                $obj == $object_to_remove_or_index_into_array
-                                || $obj->ID() === $object_to_remove_or_index_into_array->ID()
-                            )
-                        ) {
-                            $index_found_at = $index;
-                            break;
-                        }
-                    }
-                    if ($index_found_at) {
-                        $index_in_cache = $index_found_at;
-                    } else {
-                        // it wasn't found. huh. well obviously it doesn't need to be removed from teh cache
-                        // if it wasn't in it to begin with. So we're done
-                        return $object_to_remove_or_index_into_array;
-                    }
-                }
-            } elseif ($object_to_remove_or_index_into_array instanceof EE_Base_Class) {
-                // so they provided a model object, but it's not yet saved to the DB... so let's go hunting for it!
-                foreach ($this->get_all_from_cache($relationName) as $index => $potentially_obj_we_want) {
-                    /** @noinspection TypeUnsafeComparisonInspection */
-                    if ($potentially_obj_we_want == $object_to_remove_or_index_into_array) {
-                        $index_in_cache = $index;
-                    }
-                }
-            } else {
-                $index_in_cache = $object_to_remove_or_index_into_array;
-            }
-            // supposedly we've found it. But it could just be that the client code
-            // provided a bad index/object
-            if (isset($this->_model_relations[ $relationName ][ $index_in_cache ])) {
-                $obj_removed = $this->_model_relations[ $relationName ][ $index_in_cache ];
-                unset($this->_model_relations[ $relationName ][ $index_in_cache ]);
-            } else {
-                // that thing was never cached anyways.
-                $obj_removed = null;
-            }
-        }
-        return $obj_removed;
-    }
-
-
-    /**
-     * Saves this model object and its NEW cached relations to the database.
-     * (Meaning, for now, IT DOES NOT WORK if the cached items already exist in the DB.
-     * In order for that to work, we would need to mark model objects as dirty/clean...
-     * because otherwise, there's a potential for infinite looping of saving
-     * Saves the cached related model objects, and ensures the relation between them
-     * and this object and properly setup
-     *
-     * @return int ID of new model object on save; 0 on failure+
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function save_new_cached_related_model_objs()
-    {
-        // make sure this has been saved
-        if (! $this->ID()) {
-            $id = $this->save();
-        } else {
-            $id = $this->ID();
-        }
-        // now save all the NEW cached model objects  (ie they don't exist in the DB)
-        foreach ($this->_model->relation_settings() as $relationName => $relationObj) {
-            if ($this->_model_relations[ $relationName ]) {
-                // is this a relation where we should expect just ONE related object (ie, EE_Belongs_To_relation)
-                // or MANY related objects (ie, EE_HABTM_Relation or EE_Has_Many_Relation)?
-                /* @var $related_model_obj EE_Base_Class */
-                if ($relationObj instanceof EE_Belongs_To_Relation) {
-                    // add a relation to that relation type (which saves the appropriate thing in the process)
-                    // but ONLY if it DOES NOT exist in the DB
-                    $related_model_obj = $this->_model_relations[ $relationName ];
-                    // if( ! $related_model_obj->ID()){
-                    $this->_add_relation_to($related_model_obj, $relationName);
-                    $related_model_obj->save_new_cached_related_model_objs();
-                    // }
-                } else {
-                    foreach ($this->_model_relations[ $relationName ] as $related_model_obj) {
-                        // add a relation to that relation type (which saves the appropriate thing in the process)
-                        // but ONLY if it DOES NOT exist in the DB
-                        // if( ! $related_model_obj->ID()){
-                        $this->_add_relation_to($related_model_obj, $relationName);
-                        $related_model_obj->save_new_cached_related_model_objs();
-                        // }
-                    }
-                }
-            }
-        }
-        return $id;
-    }
-
-
-    /**
-     * Adds a relationship to the specified EE_Base_Class object, given the relationship's name. Eg, if the current
-     * model is related to a group of events, the $relationName should be 'Event', and should be a key in the EE
-     * Model's $_model_relations array. If this model object doesn't exist in the DB, just caches the related thing
-     *
-     * @param mixed  $otherObjectModelObjectOrID       EE_Base_Class or the ID of the other object
-     * @param string $relationName                     eg 'Events','Question',etc.
-     *                                                 an attendee to a group, you also want to specify which role they
-     *                                                 will have in that group. So you would use this parameter to
-     *                                                 specify array('role-column-name'=>'role-id')
-     * @param array  $extra_join_model_fields_n_values You can optionally include an array of key=>value pairs that
-     *                                                 allow you to further constrict the relation to being added.
-     *                                                 However, keep in mind that the columns (keys) given must match a
-     *                                                 column on the JOIN table and currently only the HABTM models
-     *                                                 accept these additional conditions.  Also remember that if an
-     *                                                 exact match isn't found for these extra cols/val pairs, then a
-     *                                                 NEW row is created in the join table.
-     * @param null   $cache_id
-     * @return EE_Base_Class the object the relation was added to
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function _add_relation_to(
-        $otherObjectModelObjectOrID,
-        $relationName,
-        $extra_join_model_fields_n_values = [],
-        $cache_id = null
-    ) {
-        // if this thing exists in the DB, save the relation to the DB
-        if ($this->ID()) {
-            $otherObject = $this->_model->add_relationship_to(
-                $this,
-                $otherObjectModelObjectOrID,
-                $relationName,
-                $extra_join_model_fields_n_values
-            );
-            // clear cache so future get_many_related and get_first_related() return new results.
-            $this->clear_cache($relationName, $otherObject, true);
-            if ($otherObject instanceof EE_Base_Class) {
-                $otherObject->clear_cache($this->_model->get_this_model_name(), $this);
-            }
-        } else {
-            // this thing doesn't exist in the DB,  so just cache it
-            if (! $otherObjectModelObjectOrID instanceof EE_Base_Class) {
-                throw new EE_Error(
-                    sprintf(
-                        esc_html__(
-                            'Before a model object is saved to the database, calls to _add_relation_to must be passed an actual object, not just an ID. You provided %s as the model object to a %s',
-                            'event_espresso'
-                        ),
-                        $otherObjectModelObjectOrID,
-                        get_class($this)
-                    )
-                );
-            }
-            $otherObject = $otherObjectModelObjectOrID;
-            $this->cache($relationName, $otherObjectModelObjectOrID, $cache_id);
-        }
-        if ($otherObject instanceof EE_Base_Class) {
-            // fix the reciprocal relation too
-            if ($otherObject->ID()) {
-                // its saved so assumed relations exist in the DB, so we can just
-                // clear the cache so future queries use the updated info in the DB
-                $otherObject->clear_cache(
-                    $this->_model->get_this_model_name(),
-                    null,
-                    true
-                );
-            } else {
-                // it's not saved, so it caches relations like this
-                $otherObject->cache($this->_model->get_this_model_name(), $this);
-            }
-        }
-        return $otherObject;
-    }
-
-
-    /**
-     * Removes a relationship to the specified EE_Base_Class object, given the relationships' name. Eg, if the current
-     * model is related to a group of events, the $relationName should be 'Events', and should be a key in the EE
-     * Model's $_model_relations array. If this model object doesn't exist in the DB, just removes the related thing
-     * from the cache
-     *
-     * @param mixed  $otherObjectModelObjectOrID
-     *                EE_Base_Class or the ID of the other object, OR an array key into the cache if this isn't saved
-     *                to the DB yet
-     * @param string $relationName
-     * @param array  $where_query
-     *                You can optionally include an array of key=>value pairs that allow you to further constrict the
-     *                relation to being added. However, keep in mind that the columns (keys) given must match a column
-     *                on the JOIN table and currently only the HABTM models accept these additional conditions. Also
-     *                remember that if an exact match isn't found for these extra cols/val pairs, then no row is
-     *                deleted.
-     * @return EE_Base_Class the relation was removed from
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function _remove_relation_to($otherObjectModelObjectOrID, $relationName, $where_query = [])
-    {
-        if ($this->ID()) {
-            // if this exists in the DB, save the relation change to the DB too
-            $otherObject = $this->_model->remove_relationship_to(
-                $this,
-                $otherObjectModelObjectOrID,
-                $relationName,
-                $where_query
-            );
-            $this->clear_cache(
-                $relationName,
-                $otherObject
-            );
-        } else {
-            // this doesn't exist in the DB, just remove it from the cache
-            $otherObject = $this->clear_cache(
-                $relationName,
-                $otherObjectModelObjectOrID
-            );
-        }
-        if ($otherObject instanceof EE_Base_Class) {
-            $otherObject->clear_cache(
-                $this->_model->get_this_model_name(),
-                $this
-            );
-        }
-        return $otherObject;
-    }
-
-
-    /**
-     * Removes ALL the related things for the $relationName.
-     *
-     * @param string $relationName
-     * @param array  $where_query_params
-     * @return EE_Base_Class
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md#0-where-conditions
-     */
-    public function _remove_relations($relationName, $where_query_params = [])
-    {
-        if ($this->ID()) {
-            // if this exists in the DB, save the relation change to the DB too
-            $otherObjects = $this->_model->remove_relations(
-                $this,
-                $relationName,
-                $where_query_params
-            );
-            $this->clear_cache(
-                $relationName,
-                null,
-                true
-            );
-        } else {
-            // this doesn't exist in the DB, just remove it from the cache
-            $otherObjects = $this->clear_cache(
-                $relationName,
-                null,
-                true
-            );
-        }
-        if (is_array($otherObjects)) {
-            foreach ($otherObjects as $otherObject) {
-                $otherObject->clear_cache(
-                    $this->_model->get_this_model_name(),
-                    $this
-                );
-            }
-        }
-        return $otherObjects;
-    }
-
-
-    /**
-     * Instead of getting the related model objects, simply counts them. Ignores default_where_conditions by default,
-     * unless otherwise specified in the $query_params
-     *
-     * @param string $relation_name  model_name like 'Event', or 'Registration'
-     * @param array  $query_params
-     * @param string $field_to_count name of field to count by. By default, uses primary key
-     * @param bool   $distinct       if we want to only count the distinct values for the column then you can trigger
-     *                               that by the setting $distinct to TRUE;
-     * @return int
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
-     */
-    public function count_related($relation_name, $query_params = [], $field_to_count = null, $distinct = false)
-    {
-        return $this->_model->count_related(
-            $this,
-            $relation_name,
-            $query_params,
-            $field_to_count,
-            $distinct
-        );
-    }
-
-
-    /**
-     * Instead of getting the related model objects, simply sums up the values of the specified field.
-     * Note: ignores default_where_conditions by default, unless otherwise specified in the $query_params
-     *
-     * @param string $relation_name model_name like 'Event', or 'Registration'
-     * @param array  $query_params
-     * @param string $field_to_sum  name of field to count by.
-     *                              By default, uses primary key
-     *                              (which doesn't make much sense, so you should probably change it)
-     * @return int
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
-     */
-    public function sum_related($relation_name, $query_params = [], $field_to_sum = null)
-    {
-        return $this->_model->sum_related(
-            $this,
-            $relation_name,
-            $query_params,
-            $field_to_sum
-        );
-    }
-
-
-    /**
-     * Does a delete on all related objects of type $relationName and removes
-     * the current model object's relation to them. If they can't be deleted (because
-     * of blocking related model objects) does nothing. If the related model objects are
-     * soft-deletable, they will be soft-deleted regardless of related blocking model objects.
-     * If this model object doesn't exist yet in the DB, just removes its related things
-     *
-     * @param string $relationName
-     * @param array  $query_params
-     * @return int how many deleted
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
-     */
-    public function delete_related($relationName, $query_params = [])
-    {
-        if ($this->ID()) {
-            $count = $this->_model->delete_related(
-                $this,
-                $relationName,
-                $query_params
-            );
-        } else {
-            $count = count($this->get_all_from_cache($relationName));
-            $this->clear_cache($relationName, null, true);
-        }
-        return $count;
-    }
-
-
-    /**
-     * Does a hard delete (ie, removes the DB row) on all related objects of type $relationName and removes
-     * the current model object's relation to them. If they can't be deleted (because
-     * of blocking related model objects) just does a soft delete on it instead, if possible.
-     * If the related thing isn't a soft-deletable model object, this function is identical
-     * to delete_related(). If this model object doesn't exist in the DB, just remove its related things
-     *
-     * @param string $relationName
-     * @param array  $query_params
-     * @return int how many deleted (including those soft deleted)
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
-     */
-    public function delete_related_permanently($relationName, $query_params = [])
-    {
-        if ($this->ID()) {
-            $count = $this->_model->delete_related_permanently(
-                $this,
-                $relationName,
-                $query_params
-            );
-        } else {
-            $count = count($this->get_all_from_cache($relationName));
-        }
-        $this->clear_cache($relationName, null, true);
-        return $count;
-    }
-
-
-    /**
-     * is_set
-     * Just a simple utility function children can use for checking if property exists
-     *
-     * @param string $field_name property to check
-     * @return bool              TRUE if existing, FALSE if not.
-     */
-    public function is_set($field_name)
-    {
-        return isset($this->_fields[ $field_name ]);
-    }
-
-
-    /**
-     * Very handy general function to allow for plugins to extend any child of EE_Base_Class.
-     * If a method is called on a child of EE_Base_Class that doesn't exist, this function is called
-     * (http://www.garfieldtech.com/blog/php-magic-call) and passed the method's name and arguments.
-     * Instead of requiring a plugin to extend the EE_Base_Class
-     * (which works fine is there's only 1 plugin, but when will that happen?)
-     * they can add a hook onto 'filters_hook_espresso__{className}__{methodName}'
-     * (eg, filters_hook_espresso__EE_Answer__my_great_function)
-     * and accepts 2 arguments: the object on which the function was called,
-     * and an array of the original arguments passed to the function.
-     * Whatever their callback function returns will be returned by this function.
-     * Example: in functions.php (or in a plugin):
-     *      add_filter('FHEE__EE_Answer__my_callback','my_callback',10,3);
-     *      function my_callback($previousReturnValue,EE_Base_Class $object,$argsArray){
-     *          $returnString= "you called my_callback! and passed args:".implode(",",$argsArray);
-     *          return $previousReturnValue.$returnString;
-     *      }
-     * require('EE_Answer.class.php');
-     * $answer= EE_Answer::new_instance(array('REG_ID' => 2,'QST_ID' => 3,'ANS_value' => The answer is 42'));
-     * echo $answer->my_callback('monkeys',100);
-     * //will output "you called my_callback! and passed args:monkeys,100"
-     *
-     * @param string $methodName name of method which was called on a child of EE_Base_Class, but which
-     * @param array  $args       array of original arguments passed to the function
-     * @return mixed whatever the plugin which calls add_filter decides
-     * @throws EE_Error
-     */
-    public function __call($methodName, $args)
-    {
-        $className = get_class($this);
-        $tagName   = "FHEE__{$className}__{$methodName}";
-        if (! has_filter($tagName)) {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__(
-                        "Method %s on class %s does not exist! You can create one with the following code in functions.php or in a plugin: add_filter('%s','my_callback',10,3);function my_callback(\$previousReturnValue,EE_Base_Class \$object, \$argsArray){/*function body*/return \$whatever;}",
-                        'event_espresso'
-                    ),
-                    $methodName,
-                    $className,
-                    $tagName
-                )
-            );
-        }
-        return apply_filters($tagName, null, $this, $args);
-    }
-
-
-    /**
-     * Deletes all the extra meta rows for this record as specified by key. If $meta_value
-     * is specified, only deletes extra meta records with that value.
-     *
-     * @param string $meta_key
-     * @param mixed  $meta_value
-     * @return int number of extra meta rows deleted
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function delete_extra_meta($meta_key, $meta_value = null)
-    {
-        $query_params = [
-            [
-                'EXM_key'  => $meta_key,
-                'OBJ_ID'   => $this->ID(),
-                'EXM_type' => $this->_model->get_this_model_name(),
-            ],
-        ];
-        if ($meta_value !== null) {
-            $query_params[0]['EXM_value'] = $meta_value;
-        }
-        return EEM_Extra_Meta::instance()->delete($query_params);
-    }
-
-
-    /**
-     * Returns a simple array of all the extra meta associated with this model object.
-     * If $one_of_each_key is true (Default), it will be an array of simple key-value pairs, keys being the
-     * extra meta's key, and teh value being its value. However, if there are duplicate extra meta rows with
-     * the same key, only one will be used. (eg array('foo'=>'bar','monkey'=>123))
-     * If $one_of_each_key is false, it will return an array with the top-level keys being
-     * the extra meta keys, but their values are also arrays, which have the extra-meta's ID as their sub-key, and
-     * finally the extra meta's value as each sub-value. (eg
-     * array('foo'=>array(1=>'bar',2=>'bill'),'monkey'=>array(3=>123)))
-     *
-     * @param boolean $one_of_each_key
-     * @return array
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function all_extra_meta_array($one_of_each_key = true)
-    {
-        $return_array = [];
-        if ($one_of_each_key) {
-            $extra_meta_objs = $this->get_many_related(
-                'Extra_Meta',
-                ['group_by' => 'EXM_key']
-            );
-            foreach ($extra_meta_objs as $extra_meta_obj) {
-                if ($extra_meta_obj instanceof EE_Extra_Meta) {
-                    $return_array[ $extra_meta_obj->key() ] = $extra_meta_obj->value();
-                }
-            }
-        } else {
-            $extra_meta_objs = $this->get_many_related('Extra_Meta');
-            foreach ($extra_meta_objs as $extra_meta_obj) {
-                if ($extra_meta_obj instanceof EE_Extra_Meta) {
-                    if (! isset($return_array[ $extra_meta_obj->key() ])) {
-                        $return_array[ $extra_meta_obj->key() ] = [];
-                    }
-                    $return_array[ $extra_meta_obj->key() ][ $extra_meta_obj->ID() ] = $extra_meta_obj->value();
-                }
-            }
-        }
-        return $return_array;
-    }
-
-
-    /**
-     * refresh_from_db
-     * Makes sure the fields and values on this model object are in-sync with what's in the database.
-     *
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error if this model object isn't in the entity mapper (because then you should
-     * just use what's in the entity mapper and refresh it) and WP_DEBUG is TRUE
-     */
-    public function refresh_from_db()
-    {
-        if ($this->ID() && $this->in_entity_map()) {
-            $this->_model->refresh_entity_map_from_db($this->ID());
-        } else {
-            // if it doesn't have ID, you shouldn't be asking to refresh it from teh database (because its not in the database)
-            // if it has an ID but it's not in the map, and you're asking me to refresh it
-            // that's kinda dangerous. You should just use what's in the entity map, or add this to the entity map if there's
-            // absolutely nothing in it for this ID
-            if (WP_DEBUG) {
-                throw new EE_Error(
-                    sprintf(
-                        esc_html__(
-                            'Trying to refresh a model object with ID "%1$s" that\'s not in the entity map? First off: you should put it in the entity map by calling %2$s. Second off, if you want what\'s in the database right now, you should just call %3$s yourself and discard this model object.',
-                            'event_espresso'
-                        ),
-                        $this->ID(),
-                        get_class($this->get_model()) . '::instance()->add_to_entity_map()',
-                        get_class($this->get_model()) . '::instance()->refresh_entity_map()'
-                    )
-                );
-            }
-        }
-    }
-
-
-    /**
-     * Nudges $field_name's value by $quantity, without any conditionals (in comparison to bumpConditionally()).
-     * Does not allow negative values, however.
-     *
-     * @param array $fields_n_quantities keys are the field names, and values are the amount by which to bump them
-     *                                   (positive or negative). One important gotcha: all these values must be
-     *                                   on the same table (eg don't pass in one field for the posts table and
-     *                                   another for the event meta table.)
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     * @since 4.9.80.p
-     */
-    public function adjustNumericFieldsInDb(array $fields_n_quantities)
-    {
-        global $wpdb;
-        if (empty($fields_n_quantities)) {
-            // No fields to update? Well sure, we updated them to that value just fine.
-            return true;
-        }
-        $fields             = [];
-        $set_sql_statements = [];
-        foreach ($fields_n_quantities as $field_name => $quantity) {
-            $field       = $this->_model->field_settings_for($field_name);
-            $fields[]    = $field;
-            $column_name = $field->get_table_column();
-
-            $abs_qty = absint($quantity);
-            if ($quantity > 0) {
-                // don't let the value be negative as often these fields are unsigned
-                $set_sql_statements[] = $wpdb->prepare(
-                    "`{$column_name}` = `{$column_name}` + %d",
-                    $abs_qty
-                );
-            } else {
-                $set_sql_statements[] = $wpdb->prepare(
-                    "`{$column_name}` = CASE
+		/* @type EE_Base_Class $newly_saved_object */
+		// now get the type of relation
+		$relationship_to_model = $this->_model->related_settings_for($relationName);
+		// if this is a 1:1 relationship
+		if ($relationship_to_model instanceof EE_Belongs_To_Relation) {
+			// then just replace the cached object with the newly saved object
+			$this->_model_relations[ $relationName ] = $newly_saved_object;
+			return true;
+		}
+		// or if it's some kind of sordid feral polyamorous relationship...
+		if (
+			is_array($this->_model_relations[ $relationName ])
+			&& isset($this->_model_relations[ $relationName ][ $current_cache_id ])
+		) {
+			// then remove the current cached item
+			unset($this->_model_relations[ $relationName ][ $current_cache_id ]);
+			// and cache the newly saved object using it's new ID
+			$this->_model_relations[ $relationName ][ $newly_saved_object->ID() ] = $newly_saved_object;
+			return true;
+		}
+		return false;
+	}
+
+
+	/**
+	 * Returns the next x number of EE_Base_Class objects in sequence from this object as found in the database
+	 * matching the given query conditions.
+	 *
+	 * @param null  $field_to_order_by  What field is being used as the reference point.
+	 * @param int   $limit              How many objects to return.
+	 * @param array $query_params       Any additional conditions on the query.
+	 * @param null  $columns_to_select  If left null, then an array of EE_Base_Class objects is returned, otherwise
+	 *                                  you can indicate just the columns you want returned
+	 * @return array|EE_Base_Class[]
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function next_x($field_to_order_by = null, $limit = 1, $query_params = [], $columns_to_select = null)
+	{
+		$field         = empty($field_to_order_by) && $this->_model->has_primary_key_field()
+			? $this->_model->get_primary_key_field()->get_name()
+			: $field_to_order_by;
+		$current_value = ! empty($field) ? $this->get($field) : null;
+		if (empty($field) || empty($current_value)) {
+			return [];
+		}
+		return $this->_model->next_x($current_value, $field, $limit, $query_params, $columns_to_select);
+	}
+
+
+	/**
+	 * Returns the previous x number of EE_Base_Class objects in sequence from this object as found in the database
+	 * matching the given query conditions.
+	 *
+	 * @param null  $field_to_order_by  What field is being used as the reference point.
+	 * @param int   $limit              How many objects to return.
+	 * @param array $query_params       Any additional conditions on the query.
+	 * @param null  $columns_to_select  If left null, then an array of EE_Base_Class objects is returned, otherwise
+	 *                                  you can indicate just the columns you want returned
+	 * @return array|EE_Base_Class[]
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function previous_x(
+		$field_to_order_by = null,
+		$limit = 1,
+		$query_params = [],
+		$columns_to_select = null
+	) {
+		$field         = empty($field_to_order_by) && $this->_model->has_primary_key_field()
+			? $this->_model->get_primary_key_field()->get_name()
+			: $field_to_order_by;
+		$current_value = ! empty($field) ? $this->get($field) : null;
+		if (empty($field) || empty($current_value)) {
+			return [];
+		}
+		return $this->_model->previous_x($current_value, $field, $limit, $query_params, $columns_to_select);
+	}
+
+
+	/**
+	 * Returns the next EE_Base_Class object in sequence from this object as found in the database
+	 * matching the given query conditions.
+	 *
+	 * @param null  $field_to_order_by  What field is being used as the reference point.
+	 * @param array $query_params       Any additional conditions on the query.
+	 * @param null  $columns_to_select  If left null, then an array of EE_Base_Class objects is returned, otherwise
+	 *                                  you can indicate just the columns you want returned
+	 * @return array|EE_Base_Class
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function next($field_to_order_by = null, $query_params = [], $columns_to_select = null)
+	{
+		$field         = empty($field_to_order_by) && $this->_model->has_primary_key_field()
+			? $this->_model->get_primary_key_field()->get_name()
+			: $field_to_order_by;
+		$current_value = ! empty($field) ? $this->get($field) : null;
+		if (empty($field) || empty($current_value)) {
+			return [];
+		}
+		return $this->_model->next($current_value, $field, $query_params, $columns_to_select);
+	}
+
+
+	/**
+	 * Returns the previous EE_Base_Class object in sequence from this object as found in the database
+	 * matching the given query conditions.
+	 *
+	 * @param null  $field_to_order_by  What field is being used as the reference point.
+	 * @param array $query_params       Any additional conditions on the query.
+	 * @param null  $columns_to_select  If left null, then an EE_Base_Class object is returned, otherwise
+	 *                                  you can indicate just the column you want returned
+	 * @return array|EE_Base_Class
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function previous($field_to_order_by = null, $query_params = [], $columns_to_select = null)
+	{
+		$field         = empty($field_to_order_by) && $this->_model->has_primary_key_field()
+			? $this->_model->get_primary_key_field()->get_name()
+			: $field_to_order_by;
+		$current_value = ! empty($field) ? $this->get($field) : null;
+		if (empty($field) || empty($current_value)) {
+			return [];
+		}
+		return $this->_model->previous($current_value, $field, $query_params, $columns_to_select);
+	}
+
+
+	/**
+	 * This is used to return the internal DateTime object used for a field that is a
+	 * EE_Datetime_Field.
+	 *
+	 * @param string $field_name               The field name retrieving the DateTime object.
+	 * @return mixed null | false | DateTime  If the requested field is NOT a EE_Datetime_Field then
+	 * @throws EE_Error an error is set and false returned.  If the field IS an
+	 *                                         EE_Datetime_Field and but the field value is null, then
+	 *                                         just null is returned (because that indicates that likely
+	 *                                         this field is nullable).
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function get_DateTime_object($field_name)
+	{
+		$field_settings = $this->_model->field_settings_for($field_name);
+		if (! $field_settings instanceof EE_Datetime_Field) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'The field %s is not an EE_Datetime_Field field.  There is no DateTime object stored on this field type.',
+						'event_espresso'
+					),
+					$field_name
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		return isset($this->_fields[ $field_name ]) && $this->_fields[ $field_name ] instanceof DateTime
+			? clone $this->_fields[ $field_name ]
+			: null;
+	}
+
+
+
+
+	/**
+	 * NOTE ABOUT BELOW:
+	 * These convenience date and time setters are for setting date and time independently.  In other words you might
+	 * want to change the time on a datetime_field but leave the date the same (or vice versa). IF on the other hand
+	 * you want to set both date and time at the same time, you can just use the models default set($field_name,$value)
+	 * method and make sure you send the entire datetime value for setting.
+	 */
+
+
+	/**
+	 * Exactly like e(), echoes out the field, but sets its schema to 'form_input', so that it
+	 * can be easily used as the value of form input.
+	 *
+	 * @param string $field_name
+	 * @return void
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function f($field_name)
+	{
+		$this->e($field_name, 'form_input');
+	}
+
+
+	/**
+	 * To be used in template to immediately echo out the value, and format it for output.
+	 * Eg, should call stripslashes and whatnot before echoing
+	 *
+	 * @param string $field_name      the name of the field as it appears in the DB
+	 * @param string $extra_cache_ref This allows the user to specify an extra cache ref for the given property
+	 *                                (in cases where the same property may be used for different outputs
+	 *                                - i.e. datetime, money etc.)
+	 * @return void
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function e($field_name, $extra_cache_ref = null)
+	{
+		echo $this->get_pretty($field_name, $extra_cache_ref);
+	}
+
+
+	/**
+	 * Gets a pretty view of the field's value. $extra_cache_ref can specify different formats for this.
+	 * The $extra_cache_ref will be passed to the model field's prepare_for_pretty_echoing, so consult the field's class
+	 * to see what options are available.
+	 *
+	 * @param string $field_name
+	 * @param string $extra_cache_ref This allows the user to specify an extra cache ref for the given property
+	 *                                (in cases where the same property may be used for different outputs
+	 *                                - i.e. datetime, money etc.)
+	 * @return mixed
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function get_pretty($field_name, $extra_cache_ref = null)
+	{
+		return $this->_get_cached_property($field_name, true, $extra_cache_ref);
+	}
+
+
+	/**
+	 * Same as `f()` but just returns the value instead of echoing it
+	 *
+	 * @param string $field_name
+	 * @return string
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function get_f($field_name)
+	{
+		return (string) $this->get_pretty($field_name, 'form_input');
+	}
+
+
+	/**
+	 * below are wrapper functions for the various datetime outputs that can be obtained for JUST returning the date
+	 * portion of a datetime value. (note the only difference between get_ and e_ is one returns the value and the
+	 * other echoes the pretty value for dtt)
+	 *
+	 * @param string $field_name name of model object datetime field holding the value
+	 * @param string $format     format for the date returned (if NULL we use default in dt_frmt property)
+	 * @return string            datetime value formatted
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function get_date($field_name, $format = '')
+	{
+		return $this->_get_datetime($field_name, $format, null, 'D');
+	}
+
+
+	/**
+	 * This simply returns the datetime for the given field name
+	 * Note: this protected function is called by the wrapper get_date or get_time or get_datetime functions
+	 * (and the equivalent e_date, e_time, e_datetime).
+	 *
+	 * @param string  $field_name    Field on the instantiated EE_Base_Class child object
+	 * @param string  $date_format   valid datetime format used for date
+	 *                               (if '' then we just use the default on the field,
+	 *                               if NULL we use the last-used format)
+	 * @param string  $time_format   Same as above except this is for time format
+	 * @param string  $date_or_time  if NULL then both are returned, otherwise "D" = only date and "T" = only time.
+	 * @param boolean $echo          Whether the dtt is echoing using pretty echoing or just returned using vanilla get
+	 * @return string|bool|EE_Error string on success, FALSE on fail, or EE_Error Exception is thrown
+	 *                               if field is not a valid dtt field, or void if echoing
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	protected function _get_datetime(
+		$field_name,
+		$date_format = '',
+		$time_format = '',
+		$date_or_time = '',
+		$echo = false
+	) {
+		// clear cached property
+		$this->_clear_cached_property($field_name);
+		// reset format properties because they are used in get()
+		$this->_dt_frmt = $date_format !== '' ? $date_format : $this->_dt_frmt;
+		$this->_tm_frmt = $time_format !== '' ? $time_format : $this->_tm_frmt;
+		if ($echo) {
+			$this->e($field_name, $date_or_time);
+			return '';
+		}
+		return $this->get($field_name, $date_or_time);
+	}
+
+
+	/**
+	 * @param        $field_name
+	 * @param string $format
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function e_date($field_name, $format = '')
+	{
+		$this->_get_datetime($field_name, $format, null, 'D', true);
+	}
+
+
+	/**
+	 * below are wrapper functions for the various datetime outputs that can be obtained for JUST returning the time
+	 * portion of a datetime value. (note the only difference between get_ and e_ is one returns the value and the
+	 * other echoes the pretty value for dtt)
+	 *
+	 * @param string $field_name name of model object datetime field holding the value
+	 * @param string $format     format for the time returned ( if NULL we use default in tm_frmt property)
+	 * @return string             datetime value formatted
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function get_time($field_name, $format = '')
+	{
+		return $this->_get_datetime($field_name, null, $format, 'T');
+	}
+
+
+	/**
+	 * @param        $field_name
+	 * @param string $format
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function e_time($field_name, $format = '')
+	{
+		$this->_get_datetime($field_name, null, $format, 'T', true);
+	}
+
+
+	/**
+	 * below are wrapper functions for the various datetime outputs that can be obtained for returning the date AND
+	 * time portion of a datetime value. (note the only difference between get_ and e_ is one returns the value and the
+	 * other echoes the pretty value for dtt)
+	 *
+	 * @param string $field_name  name of model object datetime field holding the value
+	 * @param string $date_format format for the date returned (if NULL we use default in dt_frmt property)
+	 * @param string $time_format format for the time returned (if NULL we use default in tm_frmt property)
+	 * @return string             datetime value formatted
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function get_datetime($field_name, $date_format = '', $time_format = '')
+	{
+		return $this->_get_datetime($field_name, $date_format, $time_format);
+	}
+
+
+	/**
+	 * @param string $field_name
+	 * @param string $date_format
+	 * @param string $time_format
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function e_datetime($field_name, $date_format = '', $time_format = '')
+	{
+		$this->_get_datetime($field_name, $date_format, $time_format, null, true);
+	}
+
+
+	/**
+	 * Get the i8ln value for a date using the WordPress
+	 *
+	 * @param string $field_name The EE_Datetime_Field reference for the date being retrieved.
+	 * @param string $format     PHP valid date/time string format.
+	 *                           If none is provided then the internal set format on the object will be used.
+	 * @return string Date and time string in set locale or false if no field exists for the given
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 *                           field name.
+	 * @see date_i18n function.
+	 */
+	public function get_i18n_datetime($field_name, $format = '')
+	{
+		$format = empty($format) ? $this->_dt_frmt . ' ' . $this->_tm_frmt : $format;
+		return date_i18n(
+			$format,
+			EEH_DTT_Helper::get_timestamp_with_offset(
+				$this->get_raw($field_name),
+				$this->get_timezone()
+			)
+		);
+	}
+
+
+	/**
+	 * This method simply returns the RAW unprocessed value for the given property in this class
+	 *
+	 * @param string $field_name A valid field name
+	 * @return mixed              Whatever the raw value stored on the property is.
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error if fieldSettings is misconfigured or the field doesn't exist.
+	 */
+	public function get_raw($field_name)
+	{
+		$field_settings = $this->_model->field_settings_for($field_name);
+		return $field_settings instanceof EE_Datetime_Field && $this->_fields[ $field_name ] instanceof DateTime
+			? $this->_fields[ $field_name ]->format('U')
+			: $this->_fields[ $field_name ];
+	}
+
+
+	/**
+	 * This will return a timestamp for the website timezone
+	 * but ONLY when the current website timezone is different
+	 * than the timezone set for the website.
+	 * NOTE, this currently only works well with methods that return values.
+	 * If you use it with methods that echo values
+	 * the $_timestamp property may not get reset to its original value
+	 * and that could lead to some unexpected results!
+	 *
+	 * @param string       $field_name  This is the name of the field on the object that contains the date/time
+	 *                                  value being returned.
+	 * @param string       $callback    must match a valid method in this class (defaults to get_datetime)
+	 * @param array|string $args        This is the arguments that will be passed to the callback.
+	 * @param string       $prepend     You can include something to prepend on the timestamp
+	 * @param string       $append      You can include something to append on the timestamp
+	 * @return string timestamp
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function display_in_my_timezone(
+		$field_name,
+		$callback = 'get_datetime',
+		$args = null,
+		$prepend = '',
+		$append = ''
+	) {
+		$timezone = EEH_DTT_Helper::get_timezone();
+		if ($timezone === $this->_timezone) {
+			return '';
+		}
+		$original_timezone = $this->_timezone;
+		$this->set_timezone($timezone);
+		$fn   = (array) $field_name;
+		$args = array_merge($fn, (array) $args);
+		if (! method_exists($this, $callback)) {
+			throw new EE_Error(
+				sprintf(
+					esc_html__(
+						'The method named "%s" given as the callback param in "display_in_my_timezone" does not exist.  Please check your spelling',
+						'event_espresso'
+					),
+					$callback
+				)
+			);
+		}
+		$args   = (array) $args;
+		$return = $prepend . call_user_func_array([$this, $callback], $args) . $append;
+		$this->set_timezone($original_timezone);
+		return $return;
+	}
+
+
+	/**
+	 * Deletes this model object.
+	 * This calls the `EE_Base_Class::_delete` method.  Child classes wishing to change default behaviour should
+	 * override
+	 * `EE_Base_Class::_delete` NOT this class.
+	 *
+	 * @return boolean | int
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function delete()
+	{
+		/**
+		 * Called just before the `EE_Base_Class::_delete` method call.
+		 * Note:
+		 * `EE_Base_Class::_delete` might be overridden by child classes so any client code hooking into these actions
+		 * should be aware that `_delete` may not always result in a permanent delete.
+		 * For example, `EE_Soft_Delete_Base_Class::_delete`
+		 * soft deletes (trash) the object and does not permanently delete it.
+		 *
+		 * @param EE_Base_Class $model_object about to be 'deleted'
+		 */
+		do_action('AHEE__EE_Base_Class__delete__before', $this);
+		$result = $this->_delete();
+		/**
+		 * Called just after the `EE_Base_Class::_delete` method call.
+		 * Note:
+		 * `EE_Base_Class::_delete` might be overridden by child classes so any client code hooking into these actions
+		 * should be aware that `_delete` may not always result in a permanent delete.
+		 * For example `EE_Soft_Base_Class::_delete`
+		 * soft deletes (trash) the object and does not permanently delete it.
+		 *
+		 * @param EE_Base_Class $model_object that was just 'deleted'
+		 * @param boolean       $result
+		 */
+		do_action('AHEE__EE_Base_Class__delete__end', $this, $result);
+		return $result;
+	}
+
+
+	/**
+	 * Calls the specific delete method for the instantiated class.
+	 * This method is called by the public `EE_Base_Class::delete` method.  Any child classes desiring to override
+	 * default functionality for "delete" (which is to call `permanently_delete`) should override this method NOT
+	 * `EE_Base_Class::delete`
+	 *
+	 * @return bool|int
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	protected function _delete()
+	{
+		return $this->delete_permanently();
+	}
+
+
+	/**
+	 * Deletes this model object permanently from db
+	 * (but keep in mind related models may block the delete and return an error)
+	 *
+	 * @return bool | int
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function delete_permanently()
+	{
+		/**
+		 * Called just before HARD deleting a model object
+		 *
+		 * @param EE_Base_Class $model_object about to be 'deleted'
+		 */
+		do_action('AHEE__EE_Base_Class__delete_permanently__before', $this);
+		$result = $this->_model->delete_permanently_by_ID($this->ID());
+		$this->refresh_cache_of_related_objects();
+		/**
+		 * Called just after HARD deleting a model object
+		 *
+		 * @param EE_Base_Class $model_object that was just 'deleted'
+		 * @param boolean       $result
+		 */
+		do_action('AHEE__EE_Base_Class__delete_permanently__end', $this, $result);
+		return $result;
+	}
+
+
+	/**
+	 * When this model object is deleted, it may still be cached on related model objects. This clears the cache of
+	 * related model objects
+	 *
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function refresh_cache_of_related_objects()
+	{
+		foreach ($this->_model->relation_settings() as $relation_name => $relation_obj) {
+			if (! empty($this->_model_relations[ $relation_name ])) {
+				$related_objects = $this->_model_relations[ $relation_name ];
+				if ($relation_obj instanceof EE_Belongs_To_Relation) {
+					// this relation only stores a single model object, not an array
+					// but let's make it consistent
+					$related_objects = [$related_objects];
+				}
+				foreach ($related_objects as $related_object) {
+					// only refresh their cache if they're in memory
+					if ($related_object instanceof EE_Base_Class) {
+						$related_object->clear_cache(
+							$this->_model->get_this_model_name(),
+							$this
+						);
+					}
+				}
+			}
+		}
+	}
+
+
+	/**
+	 * Forgets the cached model of the given relation Name. So the next time we request it,
+	 * we will fetch it again from the database. (Handy if you know it's changed somehow).
+	 * If a specific object is supplied, and the relationship to it is either a HasMany or HABTM,
+	 * then only remove that one object from our cached array. Otherwise, clear the entire list
+	 *
+	 * @param string $relationName                         one of the keys in the _model_relations array on the model.
+	 *                                                     Eg 'Registration'
+	 * @param mixed  $object_to_remove_or_index_into_array or an index into the array of cached things, or NULL
+	 *                                                     if you intend to use $clear_all = TRUE, or the relation only
+	 *                                                     has 1 object anyways (ie, it's a BelongsToRelation)
+	 * @param bool   $clear_all                            This flags clearing the entire cache relation property if
+	 *                                                     this is HasMany or HABTM.
+	 * @return EE_Base_Class | boolean from which was cleared from the cache, or true if we requested to remove a
+	 *                                                     relation from all
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function clear_cache($relationName, $object_to_remove_or_index_into_array = null, $clear_all = false)
+	{
+		$relationship_to_model = $this->_model->related_settings_for($relationName);
+		$index_in_cache        = '';
+		if (! $relationship_to_model) {
+			throw new EE_Error(
+				sprintf(
+					esc_html__('There is no relationship to %s on a %s. Cannot clear that cache', 'event_espresso'),
+					$relationName,
+					get_class($this)
+				)
+			);
+		}
+		if ($clear_all) {
+			$obj_removed                             = true;
+			$this->_model_relations[ $relationName ] = null;
+		} elseif ($relationship_to_model instanceof EE_Belongs_To_Relation) {
+			$obj_removed                             = $this->_model_relations[ $relationName ];
+			$this->_model_relations[ $relationName ] = null;
+		} else {
+			if (
+				$object_to_remove_or_index_into_array instanceof EE_Base_Class
+				&& $object_to_remove_or_index_into_array->ID()
+			) {
+				$index_in_cache = $object_to_remove_or_index_into_array->ID();
+				if (
+					is_array($this->_model_relations[ $relationName ])
+					&& ! isset($this->_model_relations[ $relationName ][ $index_in_cache ])
+				) {
+					$index_found_at = null;
+					// find this object in the array even though it has a different key
+					foreach ($this->_model_relations[ $relationName ] as $index => $obj) {
+						/** @noinspection TypeUnsafeComparisonInspection */
+						if (
+							$obj instanceof EE_Base_Class
+							&& (
+								$obj == $object_to_remove_or_index_into_array
+								|| $obj->ID() === $object_to_remove_or_index_into_array->ID()
+							)
+						) {
+							$index_found_at = $index;
+							break;
+						}
+					}
+					if ($index_found_at) {
+						$index_in_cache = $index_found_at;
+					} else {
+						// it wasn't found. huh. well obviously it doesn't need to be removed from teh cache
+						// if it wasn't in it to begin with. So we're done
+						return $object_to_remove_or_index_into_array;
+					}
+				}
+			} elseif ($object_to_remove_or_index_into_array instanceof EE_Base_Class) {
+				// so they provided a model object, but it's not yet saved to the DB... so let's go hunting for it!
+				foreach ($this->get_all_from_cache($relationName) as $index => $potentially_obj_we_want) {
+					/** @noinspection TypeUnsafeComparisonInspection */
+					if ($potentially_obj_we_want == $object_to_remove_or_index_into_array) {
+						$index_in_cache = $index;
+					}
+				}
+			} else {
+				$index_in_cache = $object_to_remove_or_index_into_array;
+			}
+			// supposedly we've found it. But it could just be that the client code
+			// provided a bad index/object
+			if (isset($this->_model_relations[ $relationName ][ $index_in_cache ])) {
+				$obj_removed = $this->_model_relations[ $relationName ][ $index_in_cache ];
+				unset($this->_model_relations[ $relationName ][ $index_in_cache ]);
+			} else {
+				// that thing was never cached anyways.
+				$obj_removed = null;
+			}
+		}
+		return $obj_removed;
+	}
+
+
+	/**
+	 * Saves this model object and its NEW cached relations to the database.
+	 * (Meaning, for now, IT DOES NOT WORK if the cached items already exist in the DB.
+	 * In order for that to work, we would need to mark model objects as dirty/clean...
+	 * because otherwise, there's a potential for infinite looping of saving
+	 * Saves the cached related model objects, and ensures the relation between them
+	 * and this object and properly setup
+	 *
+	 * @return int ID of new model object on save; 0 on failure+
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function save_new_cached_related_model_objs()
+	{
+		// make sure this has been saved
+		if (! $this->ID()) {
+			$id = $this->save();
+		} else {
+			$id = $this->ID();
+		}
+		// now save all the NEW cached model objects  (ie they don't exist in the DB)
+		foreach ($this->_model->relation_settings() as $relationName => $relationObj) {
+			if ($this->_model_relations[ $relationName ]) {
+				// is this a relation where we should expect just ONE related object (ie, EE_Belongs_To_relation)
+				// or MANY related objects (ie, EE_HABTM_Relation or EE_Has_Many_Relation)?
+				/* @var $related_model_obj EE_Base_Class */
+				if ($relationObj instanceof EE_Belongs_To_Relation) {
+					// add a relation to that relation type (which saves the appropriate thing in the process)
+					// but ONLY if it DOES NOT exist in the DB
+					$related_model_obj = $this->_model_relations[ $relationName ];
+					// if( ! $related_model_obj->ID()){
+					$this->_add_relation_to($related_model_obj, $relationName);
+					$related_model_obj->save_new_cached_related_model_objs();
+					// }
+				} else {
+					foreach ($this->_model_relations[ $relationName ] as $related_model_obj) {
+						// add a relation to that relation type (which saves the appropriate thing in the process)
+						// but ONLY if it DOES NOT exist in the DB
+						// if( ! $related_model_obj->ID()){
+						$this->_add_relation_to($related_model_obj, $relationName);
+						$related_model_obj->save_new_cached_related_model_objs();
+						// }
+					}
+				}
+			}
+		}
+		return $id;
+	}
+
+
+	/**
+	 * Adds a relationship to the specified EE_Base_Class object, given the relationship's name. Eg, if the current
+	 * model is related to a group of events, the $relationName should be 'Event', and should be a key in the EE
+	 * Model's $_model_relations array. If this model object doesn't exist in the DB, just caches the related thing
+	 *
+	 * @param mixed  $otherObjectModelObjectOrID       EE_Base_Class or the ID of the other object
+	 * @param string $relationName                     eg 'Events','Question',etc.
+	 *                                                 an attendee to a group, you also want to specify which role they
+	 *                                                 will have in that group. So you would use this parameter to
+	 *                                                 specify array('role-column-name'=>'role-id')
+	 * @param array  $extra_join_model_fields_n_values You can optionally include an array of key=>value pairs that
+	 *                                                 allow you to further constrict the relation to being added.
+	 *                                                 However, keep in mind that the columns (keys) given must match a
+	 *                                                 column on the JOIN table and currently only the HABTM models
+	 *                                                 accept these additional conditions.  Also remember that if an
+	 *                                                 exact match isn't found for these extra cols/val pairs, then a
+	 *                                                 NEW row is created in the join table.
+	 * @param null   $cache_id
+	 * @return EE_Base_Class the object the relation was added to
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function _add_relation_to(
+		$otherObjectModelObjectOrID,
+		$relationName,
+		$extra_join_model_fields_n_values = [],
+		$cache_id = null
+	) {
+		// if this thing exists in the DB, save the relation to the DB
+		if ($this->ID()) {
+			$otherObject = $this->_model->add_relationship_to(
+				$this,
+				$otherObjectModelObjectOrID,
+				$relationName,
+				$extra_join_model_fields_n_values
+			);
+			// clear cache so future get_many_related and get_first_related() return new results.
+			$this->clear_cache($relationName, $otherObject, true);
+			if ($otherObject instanceof EE_Base_Class) {
+				$otherObject->clear_cache($this->_model->get_this_model_name(), $this);
+			}
+		} else {
+			// this thing doesn't exist in the DB,  so just cache it
+			if (! $otherObjectModelObjectOrID instanceof EE_Base_Class) {
+				throw new EE_Error(
+					sprintf(
+						esc_html__(
+							'Before a model object is saved to the database, calls to _add_relation_to must be passed an actual object, not just an ID. You provided %s as the model object to a %s',
+							'event_espresso'
+						),
+						$otherObjectModelObjectOrID,
+						get_class($this)
+					)
+				);
+			}
+			$otherObject = $otherObjectModelObjectOrID;
+			$this->cache($relationName, $otherObjectModelObjectOrID, $cache_id);
+		}
+		if ($otherObject instanceof EE_Base_Class) {
+			// fix the reciprocal relation too
+			if ($otherObject->ID()) {
+				// its saved so assumed relations exist in the DB, so we can just
+				// clear the cache so future queries use the updated info in the DB
+				$otherObject->clear_cache(
+					$this->_model->get_this_model_name(),
+					null,
+					true
+				);
+			} else {
+				// it's not saved, so it caches relations like this
+				$otherObject->cache($this->_model->get_this_model_name(), $this);
+			}
+		}
+		return $otherObject;
+	}
+
+
+	/**
+	 * Removes a relationship to the specified EE_Base_Class object, given the relationships' name. Eg, if the current
+	 * model is related to a group of events, the $relationName should be 'Events', and should be a key in the EE
+	 * Model's $_model_relations array. If this model object doesn't exist in the DB, just removes the related thing
+	 * from the cache
+	 *
+	 * @param mixed  $otherObjectModelObjectOrID
+	 *                EE_Base_Class or the ID of the other object, OR an array key into the cache if this isn't saved
+	 *                to the DB yet
+	 * @param string $relationName
+	 * @param array  $where_query
+	 *                You can optionally include an array of key=>value pairs that allow you to further constrict the
+	 *                relation to being added. However, keep in mind that the columns (keys) given must match a column
+	 *                on the JOIN table and currently only the HABTM models accept these additional conditions. Also
+	 *                remember that if an exact match isn't found for these extra cols/val pairs, then no row is
+	 *                deleted.
+	 * @return EE_Base_Class the relation was removed from
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function _remove_relation_to($otherObjectModelObjectOrID, $relationName, $where_query = [])
+	{
+		if ($this->ID()) {
+			// if this exists in the DB, save the relation change to the DB too
+			$otherObject = $this->_model->remove_relationship_to(
+				$this,
+				$otherObjectModelObjectOrID,
+				$relationName,
+				$where_query
+			);
+			$this->clear_cache(
+				$relationName,
+				$otherObject
+			);
+		} else {
+			// this doesn't exist in the DB, just remove it from the cache
+			$otherObject = $this->clear_cache(
+				$relationName,
+				$otherObjectModelObjectOrID
+			);
+		}
+		if ($otherObject instanceof EE_Base_Class) {
+			$otherObject->clear_cache(
+				$this->_model->get_this_model_name(),
+				$this
+			);
+		}
+		return $otherObject;
+	}
+
+
+	/**
+	 * Removes ALL the related things for the $relationName.
+	 *
+	 * @param string $relationName
+	 * @param array  $where_query_params
+	 * @return EE_Base_Class
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md#0-where-conditions
+	 */
+	public function _remove_relations($relationName, $where_query_params = [])
+	{
+		if ($this->ID()) {
+			// if this exists in the DB, save the relation change to the DB too
+			$otherObjects = $this->_model->remove_relations(
+				$this,
+				$relationName,
+				$where_query_params
+			);
+			$this->clear_cache(
+				$relationName,
+				null,
+				true
+			);
+		} else {
+			// this doesn't exist in the DB, just remove it from the cache
+			$otherObjects = $this->clear_cache(
+				$relationName,
+				null,
+				true
+			);
+		}
+		if (is_array($otherObjects)) {
+			foreach ($otherObjects as $otherObject) {
+				$otherObject->clear_cache(
+					$this->_model->get_this_model_name(),
+					$this
+				);
+			}
+		}
+		return $otherObjects;
+	}
+
+
+	/**
+	 * Instead of getting the related model objects, simply counts them. Ignores default_where_conditions by default,
+	 * unless otherwise specified in the $query_params
+	 *
+	 * @param string $relation_name  model_name like 'Event', or 'Registration'
+	 * @param array  $query_params
+	 * @param string $field_to_count name of field to count by. By default, uses primary key
+	 * @param bool   $distinct       if we want to only count the distinct values for the column then you can trigger
+	 *                               that by the setting $distinct to TRUE;
+	 * @return int
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
+	 */
+	public function count_related($relation_name, $query_params = [], $field_to_count = null, $distinct = false)
+	{
+		return $this->_model->count_related(
+			$this,
+			$relation_name,
+			$query_params,
+			$field_to_count,
+			$distinct
+		);
+	}
+
+
+	/**
+	 * Instead of getting the related model objects, simply sums up the values of the specified field.
+	 * Note: ignores default_where_conditions by default, unless otherwise specified in the $query_params
+	 *
+	 * @param string $relation_name model_name like 'Event', or 'Registration'
+	 * @param array  $query_params
+	 * @param string $field_to_sum  name of field to count by.
+	 *                              By default, uses primary key
+	 *                              (which doesn't make much sense, so you should probably change it)
+	 * @return int
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
+	 */
+	public function sum_related($relation_name, $query_params = [], $field_to_sum = null)
+	{
+		return $this->_model->sum_related(
+			$this,
+			$relation_name,
+			$query_params,
+			$field_to_sum
+		);
+	}
+
+
+	/**
+	 * Does a delete on all related objects of type $relationName and removes
+	 * the current model object's relation to them. If they can't be deleted (because
+	 * of blocking related model objects) does nothing. If the related model objects are
+	 * soft-deletable, they will be soft-deleted regardless of related blocking model objects.
+	 * If this model object doesn't exist yet in the DB, just removes its related things
+	 *
+	 * @param string $relationName
+	 * @param array  $query_params
+	 * @return int how many deleted
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
+	 */
+	public function delete_related($relationName, $query_params = [])
+	{
+		if ($this->ID()) {
+			$count = $this->_model->delete_related(
+				$this,
+				$relationName,
+				$query_params
+			);
+		} else {
+			$count = count($this->get_all_from_cache($relationName));
+			$this->clear_cache($relationName, null, true);
+		}
+		return $count;
+	}
+
+
+	/**
+	 * Does a hard delete (ie, removes the DB row) on all related objects of type $relationName and removes
+	 * the current model object's relation to them. If they can't be deleted (because
+	 * of blocking related model objects) just does a soft delete on it instead, if possible.
+	 * If the related thing isn't a soft-deletable model object, this function is identical
+	 * to delete_related(). If this model object doesn't exist in the DB, just remove its related things
+	 *
+	 * @param string $relationName
+	 * @param array  $query_params
+	 * @return int how many deleted (including those soft deleted)
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @see https://github.com/eventespresso/event-espresso-core/tree/master/docs/G--Model-System/model-query-params.md
+	 */
+	public function delete_related_permanently($relationName, $query_params = [])
+	{
+		if ($this->ID()) {
+			$count = $this->_model->delete_related_permanently(
+				$this,
+				$relationName,
+				$query_params
+			);
+		} else {
+			$count = count($this->get_all_from_cache($relationName));
+		}
+		$this->clear_cache($relationName, null, true);
+		return $count;
+	}
+
+
+	/**
+	 * is_set
+	 * Just a simple utility function children can use for checking if property exists
+	 *
+	 * @param string $field_name property to check
+	 * @return bool              TRUE if existing, FALSE if not.
+	 */
+	public function is_set($field_name)
+	{
+		return isset($this->_fields[ $field_name ]);
+	}
+
+
+	/**
+	 * Very handy general function to allow for plugins to extend any child of EE_Base_Class.
+	 * If a method is called on a child of EE_Base_Class that doesn't exist, this function is called
+	 * (http://www.garfieldtech.com/blog/php-magic-call) and passed the method's name and arguments.
+	 * Instead of requiring a plugin to extend the EE_Base_Class
+	 * (which works fine is there's only 1 plugin, but when will that happen?)
+	 * they can add a hook onto 'filters_hook_espresso__{className}__{methodName}'
+	 * (eg, filters_hook_espresso__EE_Answer__my_great_function)
+	 * and accepts 2 arguments: the object on which the function was called,
+	 * and an array of the original arguments passed to the function.
+	 * Whatever their callback function returns will be returned by this function.
+	 * Example: in functions.php (or in a plugin):
+	 *      add_filter('FHEE__EE_Answer__my_callback','my_callback',10,3);
+	 *      function my_callback($previousReturnValue,EE_Base_Class $object,$argsArray){
+	 *          $returnString= "you called my_callback! and passed args:".implode(",",$argsArray);
+	 *          return $previousReturnValue.$returnString;
+	 *      }
+	 * require('EE_Answer.class.php');
+	 * $answer= EE_Answer::new_instance(array('REG_ID' => 2,'QST_ID' => 3,'ANS_value' => The answer is 42'));
+	 * echo $answer->my_callback('monkeys',100);
+	 * //will output "you called my_callback! and passed args:monkeys,100"
+	 *
+	 * @param string $methodName name of method which was called on a child of EE_Base_Class, but which
+	 * @param array  $args       array of original arguments passed to the function
+	 * @return mixed whatever the plugin which calls add_filter decides
+	 * @throws EE_Error
+	 */
+	public function __call($methodName, $args)
+	{
+		$className = get_class($this);
+		$tagName   = "FHEE__{$className}__{$methodName}";
+		if (! has_filter($tagName)) {
+			throw new EE_Error(
+				sprintf(
+					esc_html__(
+						"Method %s on class %s does not exist! You can create one with the following code in functions.php or in a plugin: add_filter('%s','my_callback',10,3);function my_callback(\$previousReturnValue,EE_Base_Class \$object, \$argsArray){/*function body*/return \$whatever;}",
+						'event_espresso'
+					),
+					$methodName,
+					$className,
+					$tagName
+				)
+			);
+		}
+		return apply_filters($tagName, null, $this, $args);
+	}
+
+
+	/**
+	 * Deletes all the extra meta rows for this record as specified by key. If $meta_value
+	 * is specified, only deletes extra meta records with that value.
+	 *
+	 * @param string $meta_key
+	 * @param mixed  $meta_value
+	 * @return int number of extra meta rows deleted
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function delete_extra_meta($meta_key, $meta_value = null)
+	{
+		$query_params = [
+			[
+				'EXM_key'  => $meta_key,
+				'OBJ_ID'   => $this->ID(),
+				'EXM_type' => $this->_model->get_this_model_name(),
+			],
+		];
+		if ($meta_value !== null) {
+			$query_params[0]['EXM_value'] = $meta_value;
+		}
+		return EEM_Extra_Meta::instance()->delete($query_params);
+	}
+
+
+	/**
+	 * Returns a simple array of all the extra meta associated with this model object.
+	 * If $one_of_each_key is true (Default), it will be an array of simple key-value pairs, keys being the
+	 * extra meta's key, and teh value being its value. However, if there are duplicate extra meta rows with
+	 * the same key, only one will be used. (eg array('foo'=>'bar','monkey'=>123))
+	 * If $one_of_each_key is false, it will return an array with the top-level keys being
+	 * the extra meta keys, but their values are also arrays, which have the extra-meta's ID as their sub-key, and
+	 * finally the extra meta's value as each sub-value. (eg
+	 * array('foo'=>array(1=>'bar',2=>'bill'),'monkey'=>array(3=>123)))
+	 *
+	 * @param boolean $one_of_each_key
+	 * @return array
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function all_extra_meta_array($one_of_each_key = true)
+	{
+		$return_array = [];
+		if ($one_of_each_key) {
+			$extra_meta_objs = $this->get_many_related(
+				'Extra_Meta',
+				['group_by' => 'EXM_key']
+			);
+			foreach ($extra_meta_objs as $extra_meta_obj) {
+				if ($extra_meta_obj instanceof EE_Extra_Meta) {
+					$return_array[ $extra_meta_obj->key() ] = $extra_meta_obj->value();
+				}
+			}
+		} else {
+			$extra_meta_objs = $this->get_many_related('Extra_Meta');
+			foreach ($extra_meta_objs as $extra_meta_obj) {
+				if ($extra_meta_obj instanceof EE_Extra_Meta) {
+					if (! isset($return_array[ $extra_meta_obj->key() ])) {
+						$return_array[ $extra_meta_obj->key() ] = [];
+					}
+					$return_array[ $extra_meta_obj->key() ][ $extra_meta_obj->ID() ] = $extra_meta_obj->value();
+				}
+			}
+		}
+		return $return_array;
+	}
+
+
+	/**
+	 * refresh_from_db
+	 * Makes sure the fields and values on this model object are in-sync with what's in the database.
+	 *
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error if this model object isn't in the entity mapper (because then you should
+	 * just use what's in the entity mapper and refresh it) and WP_DEBUG is TRUE
+	 */
+	public function refresh_from_db()
+	{
+		if ($this->ID() && $this->in_entity_map()) {
+			$this->_model->refresh_entity_map_from_db($this->ID());
+		} else {
+			// if it doesn't have ID, you shouldn't be asking to refresh it from teh database (because its not in the database)
+			// if it has an ID but it's not in the map, and you're asking me to refresh it
+			// that's kinda dangerous. You should just use what's in the entity map, or add this to the entity map if there's
+			// absolutely nothing in it for this ID
+			if (WP_DEBUG) {
+				throw new EE_Error(
+					sprintf(
+						esc_html__(
+							'Trying to refresh a model object with ID "%1$s" that\'s not in the entity map? First off: you should put it in the entity map by calling %2$s. Second off, if you want what\'s in the database right now, you should just call %3$s yourself and discard this model object.',
+							'event_espresso'
+						),
+						$this->ID(),
+						get_class($this->get_model()) . '::instance()->add_to_entity_map()',
+						get_class($this->get_model()) . '::instance()->refresh_entity_map()'
+					)
+				);
+			}
+		}
+	}
+
+
+	/**
+	 * Nudges $field_name's value by $quantity, without any conditionals (in comparison to bumpConditionally()).
+	 * Does not allow negative values, however.
+	 *
+	 * @param array $fields_n_quantities keys are the field names, and values are the amount by which to bump them
+	 *                                   (positive or negative). One important gotcha: all these values must be
+	 *                                   on the same table (eg don't pass in one field for the posts table and
+	 *                                   another for the event meta table.)
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 * @since 4.9.80.p
+	 */
+	public function adjustNumericFieldsInDb(array $fields_n_quantities)
+	{
+		global $wpdb;
+		if (empty($fields_n_quantities)) {
+			// No fields to update? Well sure, we updated them to that value just fine.
+			return true;
+		}
+		$fields             = [];
+		$set_sql_statements = [];
+		foreach ($fields_n_quantities as $field_name => $quantity) {
+			$field       = $this->_model->field_settings_for($field_name);
+			$fields[]    = $field;
+			$column_name = $field->get_table_column();
+
+			$abs_qty = absint($quantity);
+			if ($quantity > 0) {
+				// don't let the value be negative as often these fields are unsigned
+				$set_sql_statements[] = $wpdb->prepare(
+					"`{$column_name}` = `{$column_name}` + %d",
+					$abs_qty
+				);
+			} else {
+				$set_sql_statements[] = $wpdb->prepare(
+					"`{$column_name}` = CASE
                        WHEN (`{$column_name}` >= %d)
                        THEN `{$column_name}` - %d
                        ELSE 0
                     END",
-                    $abs_qty,
-                    $abs_qty
-                );
-            }
-        }
-        return $this->updateFieldsInDB(
-            $fields,
-            implode(', ', $set_sql_statements)
-        );
-    }
-
-
-    /**
-     * Change $fields' values to $new_value_sql (which is a string of raw SQL)
-     *
-     * @param EE_Model_Field_Base[] $fields
-     * @param string                $new_value_sql
-     *          example: 'column_name=123',
-     *          or 'column_name=column_name+1',
-     *          or 'column_name= CASE
-     *          WHEN (`column_name` + `other_column` + 5) <= `yet_another_column`
-     *          THEN `column_name` + 5
-     *          ELSE `column_name`
-     *          END'
-     *          Also updates $field on this model object with the latest value from the database.
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     * @since 4.9.80.p
-     */
-    protected function updateFieldsInDB($fields, $new_value_sql)
-    {
-        // First make sure this model object actually exists in the DB. It would be silly to try to update it in the DB
-        // if it wasn't even there to start off.
-        if (! $this->ID()) {
-            $this->save();
-        }
-        global $wpdb;
-        if (empty($fields)) {
-            throw new InvalidArgumentException(
-                esc_html__(
-                    'EE_Base_Class::updateFieldsInDB was passed an empty array of fields.',
-                    'event_espresso'
-                )
-            );
-        }
-        $first_field = reset($fields);
-        $table_alias = $first_field->get_table_alias();
-        foreach ($fields as $field) {
-            if ($table_alias !== $field->get_table_alias()) {
-                throw new InvalidArgumentException(
-                    sprintf(
-                        esc_html__(
-                        // @codingStandardsIgnoreStart
-                            'EE_Base_Class::updateFieldsInDB was passed fields for different tables ("%1$s" and "%2$s"), which is not supported. Instead, please call the method multiple times.',
-                            // @codingStandardsIgnoreEnd
-                            'event_espresso'
-                        ),
-                        $table_alias,
-                        $field->get_table_alias()
-                    )
-                );
-            }
-        }
-        // Ok the fields are now known to all be for the same table. Proceed with creating the SQL to update it.
-        $table_obj      = $this->_model->get_table_obj_by_alias($table_alias);
-        $table_pk_value = $this->ID();
-        $table_name     = $table_obj->get_table_name();
-        if ($table_obj instanceof EE_Secondary_Table) {
-            $table_pk_field_name = $table_obj->get_fk_on_table();
-        } else {
-            $table_pk_field_name = $table_obj->get_pk_column();
-        }
-
-        $query  =
-            "UPDATE `{$table_name}`
+					$abs_qty,
+					$abs_qty
+				);
+			}
+		}
+		return $this->updateFieldsInDB(
+			$fields,
+			implode(', ', $set_sql_statements)
+		);
+	}
+
+
+	/**
+	 * Change $fields' values to $new_value_sql (which is a string of raw SQL)
+	 *
+	 * @param EE_Model_Field_Base[] $fields
+	 * @param string                $new_value_sql
+	 *          example: 'column_name=123',
+	 *          or 'column_name=column_name+1',
+	 *          or 'column_name= CASE
+	 *          WHEN (`column_name` + `other_column` + 5) <= `yet_another_column`
+	 *          THEN `column_name` + 5
+	 *          ELSE `column_name`
+	 *          END'
+	 *          Also updates $field on this model object with the latest value from the database.
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 * @since 4.9.80.p
+	 */
+	protected function updateFieldsInDB($fields, $new_value_sql)
+	{
+		// First make sure this model object actually exists in the DB. It would be silly to try to update it in the DB
+		// if it wasn't even there to start off.
+		if (! $this->ID()) {
+			$this->save();
+		}
+		global $wpdb;
+		if (empty($fields)) {
+			throw new InvalidArgumentException(
+				esc_html__(
+					'EE_Base_Class::updateFieldsInDB was passed an empty array of fields.',
+					'event_espresso'
+				)
+			);
+		}
+		$first_field = reset($fields);
+		$table_alias = $first_field->get_table_alias();
+		foreach ($fields as $field) {
+			if ($table_alias !== $field->get_table_alias()) {
+				throw new InvalidArgumentException(
+					sprintf(
+						esc_html__(
+						// @codingStandardsIgnoreStart
+							'EE_Base_Class::updateFieldsInDB was passed fields for different tables ("%1$s" and "%2$s"), which is not supported. Instead, please call the method multiple times.',
+							// @codingStandardsIgnoreEnd
+							'event_espresso'
+						),
+						$table_alias,
+						$field->get_table_alias()
+					)
+				);
+			}
+		}
+		// Ok the fields are now known to all be for the same table. Proceed with creating the SQL to update it.
+		$table_obj      = $this->_model->get_table_obj_by_alias($table_alias);
+		$table_pk_value = $this->ID();
+		$table_name     = $table_obj->get_table_name();
+		if ($table_obj instanceof EE_Secondary_Table) {
+			$table_pk_field_name = $table_obj->get_fk_on_table();
+		} else {
+			$table_pk_field_name = $table_obj->get_pk_column();
+		}
+
+		$query  =
+			"UPDATE `{$table_name}`
             SET "
-            . $new_value_sql
-            . $wpdb->prepare(
-                "
+			. $new_value_sql
+			. $wpdb->prepare(
+				"
             WHERE `{$table_pk_field_name}` = %d;",
-                $table_pk_value
-            );
-        $result = $wpdb->query($query);
-        foreach ($fields as $field) {
-            // If it was successful, we'd like to know the new value.
-            // If it failed, we'd also like to know the new value.
-            $new_value = $this->_model->get_var(
-                $this->_model->alter_query_params_to_restrict_by_ID(
-                    $this->_model->get_index_primary_key_string(
-                        $this->model_field_array()
-                    ),
-                    [
-                        'default_where_conditions' => 'minimum',
-                    ]
-                ),
-                $field->get_name()
-            );
-            $this->set_from_db(
-                $field->get_name(),
-                $new_value
-            );
-        }
-        return (bool) $result;
-    }
-
-
-    /**
-     * This simply returns an array of model fields for this object
-     *
-     * @return array
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function model_field_array()
-    {
-        $fields     = $this->_model->field_settings();
-        $properties = [];
-        // remove prepended underscore
-        foreach ($fields as $field_name => $settings) {
-            $properties[ $field_name ] = $this->get($field_name);
-        }
-        return $properties;
-    }
-
-
-    /**
-     * Increases the value of the field $field_name_to_bump by $quantity, but only if the values of
-     * $field_name_to_bump plus $field_name_affecting_total and $quantity won't exceed $limit_field_name's value.
-     * For example, this is useful when bumping the value of TKT_reserved, TKT_sold, DTT_reserved or DTT_sold.
-     * Returns true if the value was successfully bumped, and updates the value on this model object.
-     * Otherwise returns false.
-     *
-     * @param string $field_name_to_bump
-     * @param string $field_name_affecting_total
-     * @param string $limit_field_name
-     * @param int    $quantity
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     * @since 4.9.80.p
-     */
-    public function incrementFieldConditionallyInDb(
-        $field_name_to_bump,
-        $field_name_affecting_total,
-        $limit_field_name,
-        $quantity
-    ) {
-        global $wpdb;
-        $field       = $this->_model->field_settings_for($field_name_to_bump);
-        $column_name = $field->get_table_column();
-
-        $field_affecting_total  = $this->_model->field_settings_for($field_name_affecting_total);
-        $column_affecting_total = $field_affecting_total->get_table_column();
-
-        $limiting_field  = $this->_model->field_settings_for($limit_field_name);
-        $limiting_column = $limiting_field->get_table_column();
-        return $this->updateFieldsInDB(
-            [$field],
-            $wpdb->prepare(
-                "`{$column_name}` =
+				$table_pk_value
+			);
+		$result = $wpdb->query($query);
+		foreach ($fields as $field) {
+			// If it was successful, we'd like to know the new value.
+			// If it failed, we'd also like to know the new value.
+			$new_value = $this->_model->get_var(
+				$this->_model->alter_query_params_to_restrict_by_ID(
+					$this->_model->get_index_primary_key_string(
+						$this->model_field_array()
+					),
+					[
+						'default_where_conditions' => 'minimum',
+					]
+				),
+				$field->get_name()
+			);
+			$this->set_from_db(
+				$field->get_name(),
+				$new_value
+			);
+		}
+		return (bool) $result;
+	}
+
+
+	/**
+	 * This simply returns an array of model fields for this object
+	 *
+	 * @return array
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function model_field_array()
+	{
+		$fields     = $this->_model->field_settings();
+		$properties = [];
+		// remove prepended underscore
+		foreach ($fields as $field_name => $settings) {
+			$properties[ $field_name ] = $this->get($field_name);
+		}
+		return $properties;
+	}
+
+
+	/**
+	 * Increases the value of the field $field_name_to_bump by $quantity, but only if the values of
+	 * $field_name_to_bump plus $field_name_affecting_total and $quantity won't exceed $limit_field_name's value.
+	 * For example, this is useful when bumping the value of TKT_reserved, TKT_sold, DTT_reserved or DTT_sold.
+	 * Returns true if the value was successfully bumped, and updates the value on this model object.
+	 * Otherwise returns false.
+	 *
+	 * @param string $field_name_to_bump
+	 * @param string $field_name_affecting_total
+	 * @param string $limit_field_name
+	 * @param int    $quantity
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 * @since 4.9.80.p
+	 */
+	public function incrementFieldConditionallyInDb(
+		$field_name_to_bump,
+		$field_name_affecting_total,
+		$limit_field_name,
+		$quantity
+	) {
+		global $wpdb;
+		$field       = $this->_model->field_settings_for($field_name_to_bump);
+		$column_name = $field->get_table_column();
+
+		$field_affecting_total  = $this->_model->field_settings_for($field_name_affecting_total);
+		$column_affecting_total = $field_affecting_total->get_table_column();
+
+		$limiting_field  = $this->_model->field_settings_for($limit_field_name);
+		$limiting_column = $limiting_field->get_table_column();
+		return $this->updateFieldsInDB(
+			[$field],
+			$wpdb->prepare(
+				"`{$column_name}` =
             CASE
                WHEN ((`{$column_name}` + `{$column_affecting_total}` + %d) <= `{$limiting_column}`) OR `{$limiting_column}` = %d
                THEN `{$column_name}` + %d
                ELSE `{$column_name}`
             END",
-                $quantity,
-                EE_INF_IN_DB,
-                $quantity
-            )
-        );
-    }
-
-
-    /**
-     * Because some other plugins, like Advanced Cron Manager, expect all objects to have this method
-     * (probably a bad assumption they have made, oh well)
-     *
-     * @return string
-     */
-    public function __toString()
-    {
-        try {
-            return sprintf('%s (%s)', $this->name(), $this->ID());
-        } catch (Exception $e) {
-            EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
-            return '';
-        }
-    }
-
-
-    /**
-     * Gets a pretty nice displayable nice for this model object. Often overridden
-     *
-     * @return string
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function name()
-    {
-        // find a field that's not a text field
-        $field_we_can_use = $this->_model->get_a_field_of_type('EE_Text_Field_Base');
-        if ($field_we_can_use) {
-            return $this->get($field_we_can_use->get_name());
-        }
-        $first_few_properties = $this->model_field_array();
-        $first_few_properties = array_slice($first_few_properties, 0, 3);
-        $name_parts           = [];
-        foreach ($first_few_properties as $name => $value) {
-            $name_parts[] = "$name:$value";
-        }
-        return implode(',', $name_parts);
-    }
-
-
-    /**
-     * Clear related model objects if they're already in the DB, because otherwise when we
-     * UN-serialize this model object we'll need to be careful to add them to the entity map.
-     * This means if we have made changes to those related model objects, and want to unserialize
-     * the this model object on a subsequent request, changes to those related model objects will be lost.
-     * Instead, those related model objects should be directly serialized and stored.
-     * Eg, the following won't work:
-     * $reg = EEM_Registration::instance()->get_one_by_ID( 123 );
-     * $att = $reg->attendee();
-     * $att->set( 'ATT_fname', 'Dirk' );
-     * update_option( 'my_option', serialize( $reg ) );
-     * //END REQUEST
-     * //START NEXT REQUEST
-     * $reg = get_option( 'my_option' );
-     * $reg->attendee()->save();
-     * And would need to be replace with:
-     * $reg = EEM_Registration::instance()->get_one_by_ID( 123 );
-     * $att = $reg->attendee();
-     * $att->set( 'ATT_fname', 'Dirk' );
-     * update_option( 'my_option', serialize( $reg ) );
-     * //END REQUEST
-     * //START NEXT REQUEST
-     * $att = get_option( 'my_option' );
-     * $att->save();
-     *
-     * @return array
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function __sleep()
-    {
-        foreach ($this->_model->relation_settings() as $relation_name => $relation_obj) {
-            if ($relation_obj instanceof EE_Belongs_To_Relation) {
-                $classname = 'EE_' . $this->_model->get_this_model_name();
-                if (
-                    $this->get_one_from_cache($relation_name) instanceof $classname
-                    && $this->get_one_from_cache($relation_name)->ID()
-                ) {
-                    $this->clear_cache(
-                        $relation_name,
-                        $this->get_one_from_cache($relation_name)->ID()
-                    );
-                }
-            }
-        }
-        $this->_props_n_values_provided_in_constructor = [];
-        $properties_to_serialize                       = get_object_vars($this);
-        // don't serialize the model. It's big and that risks recursion
-        unset($properties_to_serialize['_model']);
-        return array_keys($properties_to_serialize);
-    }
-
-
-    /**
-     * restore _props_n_values_provided_in_constructor
-     * PLZ NOTE: this will reset the array to whatever fields values were present prior to serialization,
-     * and therefore should NOT be used to determine if state change has occurred since initial construction.
-     * At best, you would only be able to detect if state change has occurred during THIS request.
-     *
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function __wakeup()
-    {
-        $this->_model = $this->get_model();
-        $this->_props_n_values_provided_in_constructor = $this->_fields;
-    }
-
-
-    /**
-     * Usage of this magic method is to ensure any internally cached references to object instances that must remain
-     * distinct with the clone host instance are also cloned.
-     */
-    public function __clone()
-    {
-        // handle DateTimes (this is handled in here because there's no one specific child class that uses datetimes).
-        foreach ($this->_fields as $field => $value) {
-            if ($value instanceof DateTime) {
-                $this->_fields[ $field ] = clone $value;
-            }
-        }
-    }
-
-
-    /**
-     * Ensures that this related thing is a model object.
-     *
-     * @param mixed  $object_or_id EE_base_Class/int/string either a related model object, or its ID
-     * @param string $model_name   name of the related thing, eg 'Attendee',
-     * @return EE_Base_Class
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    protected function ensure_related_thing_is_model_obj($object_or_id, $model_name)
-    {
-        $other_model_instance = self::_get_model_instance_with_name(
-            self::_get_model_classname($model_name),
-            $this->_timezone
-        );
-        return $other_model_instance->ensure_is_obj($object_or_id);
-    }
-
-
-    /**
-     * sets the time on a datetime property
-     *
-     * @param string|Datetime $time       a valid time string for php datetime functions (or DateTime object)
-     * @param string          $field_name the name of the field the time is being set on (must match a
-     *                                    EE_Datetime_Field)
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    protected function _set_time_for($time, $field_name)
-    {
-        $this->_set_date_time('T', $time, $field_name);
-    }
-
-
-    /**
-     * This takes care of setting a date or time independently on a given model object property. This method also
-     * verifies that the given field name matches a model object property and is for a EE_Datetime_Field field
-     *
-     * @param string          $what           "T" for time, 'B' for both, 'D' for Date.
-     * @param string|DateTime $datetime_value A valid Date or Time string (or DateTime object)
-     * @param string          $field_name     the name of the field the date OR time is being set on (must match a
-     *                                        EE_Datetime_Field property)
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    protected function _set_date_time($what, $datetime_value, $field_name)
-    {
-        $field = $this->_get_dtt_field_settings($field_name);
-        $field->set_timezone($this->_timezone);
-        $field->set_date_format($this->_dt_frmt);
-        $field->set_time_format($this->_tm_frmt);
-        $what = in_array($what, ['T', 'D', 'B']) ? $what : 'T';
-        switch ($what) {
-            case 'T':
-                $this->_fields[ $field_name ] = $field->prepare_for_set_with_new_time(
-                    $datetime_value,
-                    $this->_fields[ $field_name ]
-                );
-                $this->_has_changes           = true;
-                break;
-            case 'D':
-                $this->_fields[ $field_name ] = $field->prepare_for_set_with_new_date(
-                    $datetime_value,
-                    $this->_fields[ $field_name ]
-                );
-                $this->_has_changes           = true;
-                break;
-            case 'B':
-                $this->_fields[ $field_name ] = $field->prepare_for_set($datetime_value);
-                $this->_has_changes           = true;
-                break;
-        }
-        $this->_clear_cached_property($field_name);
-    }
-
-
-    /**
-     * This method validates whether the given field name is a valid field on the model object as well as it is of a
-     * type EE_Datetime_Field.  On success there will be returned the field settings.  On fail an EE_Error exception is
-     * thrown.
-     *
-     * @param string $field_name The field name being checked
-     * @return EE_Datetime_Field
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    protected function _get_dtt_field_settings($field_name)
-    {
-        $field = $this->_model->field_settings_for($field_name);
-        // check if field is dtt
-        if ($field instanceof EE_Datetime_Field) {
-            return $field;
-        }
-        throw new EE_Error(
-            sprintf(
-                esc_html__(
-                    'The field name "%s" has been requested for the EE_Base_Class datetime functions and it is not a valid EE_Datetime_Field.  Please check the spelling of the field and make sure it has been setup as a EE_Datetime_Field in the %s model constructor',
-                    'event_espresso'
-                ),
-                $field_name,
-                self::_get_model_classname(get_class($this))
-            )
-        );
-    }
-
-
-    /**
-     * sets the date on a datetime property
-     *
-     * @param string|DateTime $date       a valid date string for php datetime functions ( or DateTime object)
-     * @param string          $field_name the name of the field the date is being set on (must match a
-     *                                    EE_Datetime_Field)
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    protected function _set_date_for($date, $field_name)
-    {
-        $this->_set_date_time('D', $date, $field_name);
-    }
-
-
-    /**
-     * Just a simple utility function children can use for checking if property (or properties) exists and throwing an
-     * EE_Error exception if they don't
-     *
-     * @param mixed (string|array) $properties properties to check
-     * @return bool                              TRUE if existing, throw EE_Error if not.
-     * @throws EE_Error
-     */
-    protected function _property_exists($properties)
-    {
-        foreach ((array) $properties as $property_name) {
-            // first make sure this property exists
-            if (! $this->_fields[ $property_name ]) {
-                throw new EE_Error(
-                    sprintf(
-                        esc_html__(
-                            'Trying to retrieve a non-existent property (%s).  Double check the spelling please',
-                            'event_espresso'
-                        ),
-                        $property_name
-                    )
-                );
-            }
-        }
-        return true;
-    }
-
-
-    /**
-     * @param array $date_formats
-     * @since $VID:$
-     */
-    private function setDateAndTimeFormats(array $date_formats)
-    {
-        if (! empty($date_formats) && is_array($date_formats)) {
-            list($this->_dt_frmt, $this->_tm_frmt) = $date_formats;
-        } else {
-            // set default formats for date and time
-            $this->_dt_frmt = (string) get_option('date_format', 'Y-m-d');
-            $this->_tm_frmt = (string) get_option('time_format', 'g:i a');
-        }
-    }
-
-
-    /**
-     * @param array $model_fields
-     * @param array $fieldValues
-     * @throws EE_Error
-     * @since $VID:$
-     */
-    private function validateFieldValues(array $model_fields, array $fieldValues)
-    {
-        // verify client code has not passed any invalid field names
-        foreach ($fieldValues as $field_name => $field_value) {
-            if (! isset($model_fields[ $field_name ])) {
-                throw new EE_Error(
-                    sprintf(
-                        esc_html__(
-                            'Invalid field (%s) passed to constructor of %s. Allowed fields are :%s',
-                            'event_espresso'
-                        ),
-                        $field_name,
-                        get_class($this),
-                        implode(', ', array_keys($model_fields))
-                    )
-                );
-            }
-        }
-    }
-
-
-    /**
-     * @param array $model_fields
-     * @param bool  $set_from_db
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @since $VID:$
-     */
-    private function setFieldValues(array $model_fields, $set_from_db)
-    {
-        foreach ($model_fields as $fieldName => $field) {
-            // if db model is instantiating
-            if ($set_from_db) {
-                // client code has indicated these field values are from the database
-                $this->set_from_db(
-                    $fieldName,
-                    isset($fieldValues[ $fieldName ]) ? $fieldValues[ $fieldName ] : null
-                );
-            } else {
-                // we're constructing a brand new instance of the model object.
-                // Generally, this means we'll need to do more field validation
-                $this->set(
-                    $fieldName,
-                    isset($fieldValues[ $fieldName ]) ? $fieldValues[ $fieldName ] : null,
-                    true
-                );
-            }
-        }
-    }
+				$quantity,
+				EE_INF_IN_DB,
+				$quantity
+			)
+		);
+	}
+
+
+	/**
+	 * Because some other plugins, like Advanced Cron Manager, expect all objects to have this method
+	 * (probably a bad assumption they have made, oh well)
+	 *
+	 * @return string
+	 */
+	public function __toString()
+	{
+		try {
+			return sprintf('%s (%s)', $this->name(), $this->ID());
+		} catch (Exception $e) {
+			EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
+			return '';
+		}
+	}
+
+
+	/**
+	 * Gets a pretty nice displayable nice for this model object. Often overridden
+	 *
+	 * @return string
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function name()
+	{
+		// find a field that's not a text field
+		$field_we_can_use = $this->_model->get_a_field_of_type('EE_Text_Field_Base');
+		if ($field_we_can_use) {
+			return $this->get($field_we_can_use->get_name());
+		}
+		$first_few_properties = $this->model_field_array();
+		$first_few_properties = array_slice($first_few_properties, 0, 3);
+		$name_parts           = [];
+		foreach ($first_few_properties as $name => $value) {
+			$name_parts[] = "$name:$value";
+		}
+		return implode(',', $name_parts);
+	}
+
+
+	/**
+	 * Clear related model objects if they're already in the DB, because otherwise when we
+	 * UN-serialize this model object we'll need to be careful to add them to the entity map.
+	 * This means if we have made changes to those related model objects, and want to unserialize
+	 * the this model object on a subsequent request, changes to those related model objects will be lost.
+	 * Instead, those related model objects should be directly serialized and stored.
+	 * Eg, the following won't work:
+	 * $reg = EEM_Registration::instance()->get_one_by_ID( 123 );
+	 * $att = $reg->attendee();
+	 * $att->set( 'ATT_fname', 'Dirk' );
+	 * update_option( 'my_option', serialize( $reg ) );
+	 * //END REQUEST
+	 * //START NEXT REQUEST
+	 * $reg = get_option( 'my_option' );
+	 * $reg->attendee()->save();
+	 * And would need to be replace with:
+	 * $reg = EEM_Registration::instance()->get_one_by_ID( 123 );
+	 * $att = $reg->attendee();
+	 * $att->set( 'ATT_fname', 'Dirk' );
+	 * update_option( 'my_option', serialize( $reg ) );
+	 * //END REQUEST
+	 * //START NEXT REQUEST
+	 * $att = get_option( 'my_option' );
+	 * $att->save();
+	 *
+	 * @return array
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function __sleep()
+	{
+		foreach ($this->_model->relation_settings() as $relation_name => $relation_obj) {
+			if ($relation_obj instanceof EE_Belongs_To_Relation) {
+				$classname = 'EE_' . $this->_model->get_this_model_name();
+				if (
+					$this->get_one_from_cache($relation_name) instanceof $classname
+					&& $this->get_one_from_cache($relation_name)->ID()
+				) {
+					$this->clear_cache(
+						$relation_name,
+						$this->get_one_from_cache($relation_name)->ID()
+					);
+				}
+			}
+		}
+		$this->_props_n_values_provided_in_constructor = [];
+		$properties_to_serialize                       = get_object_vars($this);
+		// don't serialize the model. It's big and that risks recursion
+		unset($properties_to_serialize['_model']);
+		return array_keys($properties_to_serialize);
+	}
+
+
+	/**
+	 * restore _props_n_values_provided_in_constructor
+	 * PLZ NOTE: this will reset the array to whatever fields values were present prior to serialization,
+	 * and therefore should NOT be used to determine if state change has occurred since initial construction.
+	 * At best, you would only be able to detect if state change has occurred during THIS request.
+	 *
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function __wakeup()
+	{
+		$this->_model = $this->get_model();
+		$this->_props_n_values_provided_in_constructor = $this->_fields;
+	}
+
+
+	/**
+	 * Usage of this magic method is to ensure any internally cached references to object instances that must remain
+	 * distinct with the clone host instance are also cloned.
+	 */
+	public function __clone()
+	{
+		// handle DateTimes (this is handled in here because there's no one specific child class that uses datetimes).
+		foreach ($this->_fields as $field => $value) {
+			if ($value instanceof DateTime) {
+				$this->_fields[ $field ] = clone $value;
+			}
+		}
+	}
+
+
+	/**
+	 * Ensures that this related thing is a model object.
+	 *
+	 * @param mixed  $object_or_id EE_base_Class/int/string either a related model object, or its ID
+	 * @param string $model_name   name of the related thing, eg 'Attendee',
+	 * @return EE_Base_Class
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	protected function ensure_related_thing_is_model_obj($object_or_id, $model_name)
+	{
+		$other_model_instance = self::_get_model_instance_with_name(
+			self::_get_model_classname($model_name),
+			$this->_timezone
+		);
+		return $other_model_instance->ensure_is_obj($object_or_id);
+	}
+
+
+	/**
+	 * sets the time on a datetime property
+	 *
+	 * @param string|Datetime $time       a valid time string for php datetime functions (or DateTime object)
+	 * @param string          $field_name the name of the field the time is being set on (must match a
+	 *                                    EE_Datetime_Field)
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	protected function _set_time_for($time, $field_name)
+	{
+		$this->_set_date_time('T', $time, $field_name);
+	}
+
+
+	/**
+	 * This takes care of setting a date or time independently on a given model object property. This method also
+	 * verifies that the given field name matches a model object property and is for a EE_Datetime_Field field
+	 *
+	 * @param string          $what           "T" for time, 'B' for both, 'D' for Date.
+	 * @param string|DateTime $datetime_value A valid Date or Time string (or DateTime object)
+	 * @param string          $field_name     the name of the field the date OR time is being set on (must match a
+	 *                                        EE_Datetime_Field property)
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	protected function _set_date_time($what, $datetime_value, $field_name)
+	{
+		$field = $this->_get_dtt_field_settings($field_name);
+		$field->set_timezone($this->_timezone);
+		$field->set_date_format($this->_dt_frmt);
+		$field->set_time_format($this->_tm_frmt);
+		$what = in_array($what, ['T', 'D', 'B']) ? $what : 'T';
+		switch ($what) {
+			case 'T':
+				$this->_fields[ $field_name ] = $field->prepare_for_set_with_new_time(
+					$datetime_value,
+					$this->_fields[ $field_name ]
+				);
+				$this->_has_changes           = true;
+				break;
+			case 'D':
+				$this->_fields[ $field_name ] = $field->prepare_for_set_with_new_date(
+					$datetime_value,
+					$this->_fields[ $field_name ]
+				);
+				$this->_has_changes           = true;
+				break;
+			case 'B':
+				$this->_fields[ $field_name ] = $field->prepare_for_set($datetime_value);
+				$this->_has_changes           = true;
+				break;
+		}
+		$this->_clear_cached_property($field_name);
+	}
+
+
+	/**
+	 * This method validates whether the given field name is a valid field on the model object as well as it is of a
+	 * type EE_Datetime_Field.  On success there will be returned the field settings.  On fail an EE_Error exception is
+	 * thrown.
+	 *
+	 * @param string $field_name The field name being checked
+	 * @return EE_Datetime_Field
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	protected function _get_dtt_field_settings($field_name)
+	{
+		$field = $this->_model->field_settings_for($field_name);
+		// check if field is dtt
+		if ($field instanceof EE_Datetime_Field) {
+			return $field;
+		}
+		throw new EE_Error(
+			sprintf(
+				esc_html__(
+					'The field name "%s" has been requested for the EE_Base_Class datetime functions and it is not a valid EE_Datetime_Field.  Please check the spelling of the field and make sure it has been setup as a EE_Datetime_Field in the %s model constructor',
+					'event_espresso'
+				),
+				$field_name,
+				self::_get_model_classname(get_class($this))
+			)
+		);
+	}
+
+
+	/**
+	 * sets the date on a datetime property
+	 *
+	 * @param string|DateTime $date       a valid date string for php datetime functions ( or DateTime object)
+	 * @param string          $field_name the name of the field the date is being set on (must match a
+	 *                                    EE_Datetime_Field)
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	protected function _set_date_for($date, $field_name)
+	{
+		$this->_set_date_time('D', $date, $field_name);
+	}
+
+
+	/**
+	 * Just a simple utility function children can use for checking if property (or properties) exists and throwing an
+	 * EE_Error exception if they don't
+	 *
+	 * @param mixed (string|array) $properties properties to check
+	 * @return bool                              TRUE if existing, throw EE_Error if not.
+	 * @throws EE_Error
+	 */
+	protected function _property_exists($properties)
+	{
+		foreach ((array) $properties as $property_name) {
+			// first make sure this property exists
+			if (! $this->_fields[ $property_name ]) {
+				throw new EE_Error(
+					sprintf(
+						esc_html__(
+							'Trying to retrieve a non-existent property (%s).  Double check the spelling please',
+							'event_espresso'
+						),
+						$property_name
+					)
+				);
+			}
+		}
+		return true;
+	}
+
+
+	/**
+	 * @param array $date_formats
+	 * @since $VID:$
+	 */
+	private function setDateAndTimeFormats(array $date_formats)
+	{
+		if (! empty($date_formats) && is_array($date_formats)) {
+			list($this->_dt_frmt, $this->_tm_frmt) = $date_formats;
+		} else {
+			// set default formats for date and time
+			$this->_dt_frmt = (string) get_option('date_format', 'Y-m-d');
+			$this->_tm_frmt = (string) get_option('time_format', 'g:i a');
+		}
+	}
+
+
+	/**
+	 * @param array $model_fields
+	 * @param array $fieldValues
+	 * @throws EE_Error
+	 * @since $VID:$
+	 */
+	private function validateFieldValues(array $model_fields, array $fieldValues)
+	{
+		// verify client code has not passed any invalid field names
+		foreach ($fieldValues as $field_name => $field_value) {
+			if (! isset($model_fields[ $field_name ])) {
+				throw new EE_Error(
+					sprintf(
+						esc_html__(
+							'Invalid field (%s) passed to constructor of %s. Allowed fields are :%s',
+							'event_espresso'
+						),
+						$field_name,
+						get_class($this),
+						implode(', ', array_keys($model_fields))
+					)
+				);
+			}
+		}
+	}
+
+
+	/**
+	 * @param array $model_fields
+	 * @param bool  $set_from_db
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @since $VID:$
+	 */
+	private function setFieldValues(array $model_fields, $set_from_db)
+	{
+		foreach ($model_fields as $fieldName => $field) {
+			// if db model is instantiating
+			if ($set_from_db) {
+				// client code has indicated these field values are from the database
+				$this->set_from_db(
+					$fieldName,
+					isset($fieldValues[ $fieldName ]) ? $fieldValues[ $fieldName ] : null
+				);
+			} else {
+				// we're constructing a brand new instance of the model object.
+				// Generally, this means we'll need to do more field validation
+				$this->set(
+					$fieldName,
+					isset($fieldValues[ $fieldName ]) ? $fieldValues[ $fieldName ] : null,
+					true
+				);
+			}
+		}
+	}
 }

Spacing +119 added lines, -119 removed lines

@@ -151,12 +151,12 @@ 
         $this->validateFieldValues($model_fields, $field_values);
         $this->setFieldValues($model_fields, $set_from_db);
         // remember in entity mapper
-        if (! $set_from_db && $this->_model->has_primary_key_field() && $this->ID()) {
+        if ( ! $set_from_db && $this->_model->has_primary_key_field() && $this->ID()) {
             $this->_model->add_to_entity_map($this);
         }
         // setup all the relations
         foreach ($this->_model->relation_settings() as $relation_name => $relation_obj) {
-            $this->_model_relations[ $relation_name ] = $relation_obj instanceof EE_Belongs_To_Relation
+            $this->_model_relations[$relation_name] = $relation_obj instanceof EE_Belongs_To_Relation
                 ? null
                 : [];
         }
@@ -179,7 +179,7 @@ 
      */
     public function get_model($timezone = '')
     {
-        if (! $this->_model) {
+        if ( ! $this->_model) {
             $timezone     = $timezone ? $timezone : $this->_timezone;
             $modelName    = self::_get_model_classname(get_class($this));
             $this->_model = self::_get_model_instance_with_name($modelName, $timezone);
@@ -218,7 +218,7 @@ 
             } else {
                 $field_value = $field_obj->prepare_for_set_from_db($field_value_from_db);
             }
-            $this->_fields[ $field_name ] = $field_value;
+            $this->_fields[$field_name] = $field_value;
             $this->_clear_cached_property($field_name);
         }
     }
@@ -245,7 +245,7 @@ 
         // then don't do anything
         if (
             ! $use_default
-            && $this->_fields[ $field_name ] === $field_value
+            && $this->_fields[$field_name] === $field_value
             && $this->ID()
         ) {
             return;
@@ -261,7 +261,7 @@ 
             $holder_of_value = $field_obj->prepare_for_set($field_value);
             // should the value be null?
             if (($field_value === null || $holder_of_value === null || $holder_of_value === '') && $use_default) {
-                $this->_fields[ $field_name ] = $field_obj->get_default_value();
+                $this->_fields[$field_name] = $field_obj->get_default_value();
                 /**
                  * To save having to refactor all the models, if a default value is used for a
                  * EE_Datetime_Field, and that value is not null nor is it a DateTime
@@ -272,15 +272,15 @@ 
                  */
                 if (
                     $field_obj instanceof EE_Datetime_Field
-                    && $this->_fields[ $field_name ] !== null
-                    && ! $this->_fields[ $field_name ] instanceof DateTime
+                    && $this->_fields[$field_name] !== null
+                    && ! $this->_fields[$field_name] instanceof DateTime
                 ) {
-                    empty($this->_fields[ $field_name ])
+                    empty($this->_fields[$field_name])
                         ? $this->set($field_name, time())
-                        : $this->set($field_name, $this->_fields[ $field_name ]);
+                        : $this->set($field_name, $this->_fields[$field_name]);
                 }
             } else {
-                $this->_fields[ $field_name ] = $holder_of_value;
+                $this->_fields[$field_name] = $holder_of_value;
             }
             // if we're not in the constructor...
             // now check if what we set was a primary key
@@ -339,7 +339,7 @@ 
     {
         // now that we know the name of the variable, use a variable variable to get its value and return its
         if ($this->_model->has_primary_key_field()) {
-            return $this->_fields[ $this->_model->primary_key_name() ];
+            return $this->_fields[$this->_model->primary_key_name()];
         }
         return $this->_model->get_index_primary_key_string($this->_fields);
     }
@@ -356,7 +356,7 @@ 
     {
         return strpos($model_name, 'EE_') === 0
             ? str_replace('EE_', 'EEM_', $model_name)
-            : 'EEM_' . $model_name;
+            : 'EEM_'.$model_name;
     }
 
 
@@ -389,7 +389,7 @@ 
      */
     protected function _clear_cached_property($property_name)
     {
-        unset($this->_cached_properties[ $property_name ]);
+        unset($this->_cached_properties[$property_name]);
     }
 
 
@@ -408,7 +408,7 @@ 
     protected static function _get_model($classname, $timezone = '')
     {
         // find model for this class
-        if (! $classname) {
+        if ( ! $classname) {
             throw new EE_Error(
                 sprintf(
                     esc_html__(
@@ -466,9 +466,9 @@ 
         // verify the field exists
         $this->_model->field_settings_for($field_name);
         $cache_type = $pretty ? 'pretty' : 'standard';
-        $cache_type .= ! empty($extra_cache_ref) ? '_' . $extra_cache_ref : '';
-        if (isset($this->_cached_properties[ $field_name ][ $cache_type ])) {
-            return $this->_cached_properties[ $field_name ][ $cache_type ];
+        $cache_type .= ! empty($extra_cache_ref) ? '_'.$extra_cache_ref : '';
+        if (isset($this->_cached_properties[$field_name][$cache_type])) {
+            return $this->_cached_properties[$field_name][$cache_type];
         }
         $value = $this->_get_fresh_property($field_name, $pretty, $extra_cache_ref);
         $this->_set_cached_property($field_name, $value, $cache_type);
@@ -495,12 +495,12 @@ 
         if ($field_obj instanceof EE_Datetime_Field) {
             $this->_prepare_datetime_field($field_obj, $pretty, $extra_cache_ref);
         }
-        if (! isset($this->_fields[ $field_name ])) {
-            $this->_fields[ $field_name ] = null;
+        if ( ! isset($this->_fields[$field_name])) {
+            $this->_fields[$field_name] = null;
         }
         return $pretty
-            ? $field_obj->prepare_for_pretty_echoing($this->_fields[ $field_name ], $extra_cache_ref)
-            : $field_obj->prepare_for_get($this->_fields[ $field_name ]);
+            ? $field_obj->prepare_for_pretty_echoing($this->_fields[$field_name], $extra_cache_ref)
+            : $field_obj->prepare_for_get($this->_fields[$field_name]);
     }
 
 
@@ -521,7 +521,7 @@ 
         // first make sure this property exists
         $this->_model->field_settings_for($field_name);
         $cache_type = empty($cache_type) ? 'standard' : $cache_type;
-        $this->_cached_properties[ $field_name ][ $cache_type ] = $value;
+        $this->_cached_properties[$field_name][$cache_type] = $value;
     }
 
 
@@ -575,9 +575,9 @@ 
         $primary_id_ref = self::_get_primary_key_name($classname);
         if (
             array_key_exists($primary_id_ref, $props_n_values)
-            && ! empty($props_n_values[ $primary_id_ref ])
+            && ! empty($props_n_values[$primary_id_ref])
         ) {
-            $id = $props_n_values[ $primary_id_ref ];
+            $id = $props_n_values[$primary_id_ref];
             return self::_get_model($classname)->get_from_entity_map($id);
         }
         return false;
@@ -599,7 +599,7 @@ 
      */
     protected static function _get_primary_key_name($classname = null)
     {
-        if (! $classname) {
+        if ( ! $classname) {
             throw new EE_Error(
                 sprintf(
                     esc_html__('What were you thinking calling _get_primary_key_name(%s)', 'event_espresso'),
@@ -639,9 +639,9 @@ 
             $primary_id_ref = self::_get_primary_key_name($classname);
             if (
                 array_key_exists($primary_id_ref, $props_n_values)
-                && ! empty($props_n_values[ $primary_id_ref ])
+                && ! empty($props_n_values[$primary_id_ref])
             ) {
-                $existing = $model->get_one_by_ID($props_n_values[ $primary_id_ref ]);
+                $existing = $model->get_one_by_ID($props_n_values[$primary_id_ref]);
             }
         } elseif ($model->has_all_combined_primary_key_fields($props_n_values)) {
             // no primary key on this model, but there's still a matching item in the DB
@@ -739,10 +739,10 @@ 
     public function get_original($field_name)
     {
         if (
-            isset($this->_props_n_values_provided_in_constructor[ $field_name ])
+            isset($this->_props_n_values_provided_in_constructor[$field_name])
             && $field_settings = $this->_model->field_settings_for($field_name)
         ) {
-            return $field_settings->prepare_for_get($this->_props_n_values_provided_in_constructor[ $field_name ]);
+            return $field_settings->prepare_for_get($this->_props_n_values_provided_in_constructor[$field_name]);
         }
         return null;
     }
@@ -778,8 +778,8 @@ 
      */
     public function getCustomSelect($alias)
     {
-        return isset($this->custom_selection_results[ $alias ])
-            ? $this->custom_selection_results[ $alias ]
+        return isset($this->custom_selection_results[$alias])
+            ? $this->custom_selection_results[$alias]
             : null;
     }
 
@@ -846,7 +846,7 @@ 
             $this->set($column, $value);
         }
         // no changes ? then don't do anything
-        if (! $this->_has_changes && $this->ID() && $this->_model->get_primary_key_field()->is_auto_increment()) {
+        if ( ! $this->_has_changes && $this->ID() && $this->_model->get_primary_key_field()->is_auto_increment()) {
             return 0;
         }
         /**
@@ -856,7 +856,7 @@ 
          * @param EE_Base_Class $model_object the model object about to be saved.
          */
         do_action('AHEE__EE_Base_Class__save__begin', $this);
-        if (! $this->allow_persist()) {
+        if ( ! $this->allow_persist()) {
             return 0;
         }
         // now get current attribute values
@@ -871,10 +871,10 @@ 
         if ($this->_model->has_primary_key_field()) {
             if ($this->_model->get_primary_key_field()->is_auto_increment()) {
                 // ok check if it's set, if so: update; if not, insert
-                if (! empty($save_cols_n_values[ $this->_model->primary_key_name() ])) {
+                if ( ! empty($save_cols_n_values[$this->_model->primary_key_name()])) {
                     $results = $this->_model->update_by_ID($save_cols_n_values, $this->ID());
                 } else {
-                    unset($save_cols_n_values[ $this->_model->primary_key_name() ]);
+                    unset($save_cols_n_values[$this->_model->primary_key_name()]);
                     $results = $this->_model->insert($save_cols_n_values);
                     if ($results) {
                         // if successful, set the primary key
@@ -884,7 +884,7 @@ 
                         // will get added to the mapper before we can add this one!
                         // but if we just avoid using the SET method, all that headache can be avoided
                         $pk_field_name                   = $this->_model->primary_key_name();
-                        $this->_fields[ $pk_field_name ] = $results;
+                        $this->_fields[$pk_field_name] = $results;
                         $this->_clear_cached_property($pk_field_name);
                         $this->_model->add_to_entity_map($this);
                         $this->_update_cached_related_model_objs_fks();
@@ -902,8 +902,8 @@ 
                                     'event_espresso'
                                 ),
                                 get_class($this),
-                                get_class($this->_model) . '::instance()->add_to_entity_map()',
-                                get_class($this->_model) . '::instance()->get_one_by_ID()',
+                                get_class($this->_model).'::instance()->add_to_entity_map()',
+                                get_class($this->_model).'::instance()->get_one_by_ID()',
                                 '<br />'
                             )
                         );
@@ -928,7 +928,7 @@ 
                     $save_cols_n_values,
                     $this->_model->get_combined_primary_key_fields()
                 );
-                $results                     = $this->_model->update(
+                $results = $this->_model->update(
                     $save_cols_n_values,
                     $combined_pk_fields_n_values
                 );
@@ -981,7 +981,7 @@ 
             $query_params[0]['EXM_value'] = $meta_value;
         }
         $existing_rows_like_that = EEM_Extra_Meta::instance()->get_all($query_params);
-        if (! $existing_rows_like_that) {
+        if ( ! $existing_rows_like_that) {
             return $this->add_extra_meta($meta_key, $meta_value);
         }
         foreach ($existing_rows_like_that as $existing_row) {
@@ -1112,7 +1112,7 @@ 
      */
     public function get_all_from_cache($relationName)
     {
-        $objects = isset($this->_model_relations[ $relationName ]) ? $this->_model_relations[ $relationName ] : [];
+        $objects = isset($this->_model_relations[$relationName]) ? $this->_model_relations[$relationName] : [];
         // if the result is not an array, but exists, make it an array
         $objects = is_array($objects) ? $objects : [$objects];
         // bugfix for https://events.codebasehq.com/projects/event-espresso/tickets/7143
@@ -1207,7 +1207,7 @@ 
                 $values = [];
                 foreach ($results as $result) {
                     if ($result instanceof EE_Extra_Meta) {
-                        $values[ $result->ID() ] = $result->value();
+                        $values[$result->ID()] = $result->value();
                     }
                 }
                 return $values;
@@ -1240,7 +1240,7 @@ 
     public function get_first_related($relationName, $query_params = [])
     {
         $model_relation = $this->_model->related_settings_for($relationName);
-        if (! $this->ID()) {
+        if ( ! $this->ID()) {
             // this doesn't exist in the DB,
             // but maybe the relation type is "belongs to" and the related object might
             if ($model_relation instanceof EE_Belongs_To_Relation) {
@@ -1303,7 +1303,7 @@ 
      */
     public function get_many_related($relationName, $query_params = [])
     {
-        if (! $this->ID()) {
+        if ( ! $this->ID()) {
             // this doesn't exist in the DB, so just get the related things from the cache
             return $this->get_all_from_cache($relationName);
         }
@@ -1345,8 +1345,8 @@ 
      */
     public function get_one_from_cache($relationName)
     {
-        $cached_array_or_object = isset($this->_model_relations[ $relationName ])
-            ? $this->_model_relations[ $relationName ]
+        $cached_array_or_object = isset($this->_model_relations[$relationName])
+            ? $this->_model_relations[$relationName]
             : null;
         if (is_array($cached_array_or_object)) {
             $cached_array_or_object = array_shift($cached_array_or_object);
@@ -1377,11 +1377,11 @@ 
     public function cache($relationName = '', $object_to_cache = null, $cache_id = null)
     {
         // its entirely possible that there IS no related object yet in which case there is nothing to cache.
-        if (! $object_to_cache instanceof EE_Base_Class) {
+        if ( ! $object_to_cache instanceof EE_Base_Class) {
             return false;
         }
         // also get "how" the object is related, or throw an error
-        if (! $relationship_to_model = $this->_model->related_settings_for($relationName)) {
+        if ( ! $relationship_to_model = $this->_model->related_settings_for($relationName)) {
             throw new EE_Error(
                 sprintf(
                     esc_html__('There is no relationship to %s on a %s. Cannot cache it', 'event_espresso'),
@@ -1395,38 +1395,38 @@ 
             // if it's a "belongs to" relationship, then there's only one related model object
             // eg, if this is a registration, there's only 1 attendee for it
             // so for these model objects just set it to be cached
-            $this->_model_relations[ $relationName ] = $object_to_cache;
+            $this->_model_relations[$relationName] = $object_to_cache;
             return true;
         }
         // otherwise, this is the "many" side of a one to many relationship,
         // so we'll add the object to the array of related objects for that type.
         // eg: if this is an event, there are many registrations for that event,
         // so we cache the registrations in an array
-        if (! is_array($this->_model_relations[ $relationName ])) {
+        if ( ! is_array($this->_model_relations[$relationName])) {
             // if for some reason, the cached item is a model object,
             // then stick that in the array, otherwise start with an empty array
-            $this->_model_relations[ $relationName ] = $this->_model_relations[ $relationName ] instanceof EE_Base_Class
-                ? [$this->_model_relations[ $relationName ]]
+            $this->_model_relations[$relationName] = $this->_model_relations[$relationName] instanceof EE_Base_Class
+                ? [$this->_model_relations[$relationName]]
                 : [];
         }
         // first check for a cache_id which is normally empty
-        if (! empty($cache_id)) {
+        if ( ! empty($cache_id)) {
             // if the cache_id exists, then it means we are purposely trying to cache this
             // with a known key that can then be used to retrieve the object later on
-            $this->_model_relations[ $relationName ][ $cache_id ] = $object_to_cache;
+            $this->_model_relations[$relationName][$cache_id] = $object_to_cache;
             return $cache_id;
         }
         if ($object_to_cache->ID()) {
             // OR the cached object originally came from the db, so let's just use it's PK for an ID
-            $this->_model_relations[ $relationName ][ $object_to_cache->ID() ] = $object_to_cache;
+            $this->_model_relations[$relationName][$object_to_cache->ID()] = $object_to_cache;
             return $object_to_cache->ID();
         }
         // OR it's a new object with no ID, so just throw it in the array with an auto-incremented ID
-        $this->_model_relations[ $relationName ][] = $object_to_cache;
+        $this->_model_relations[$relationName][] = $object_to_cache;
         // move the internal pointer to the end of the array
-        end($this->_model_relations[ $relationName ]);
+        end($this->_model_relations[$relationName]);
         // and grab the key so that we can return it
-        return key($this->_model_relations[ $relationName ]);
+        return key($this->_model_relations[$relationName]);
     }
 
 
@@ -1458,7 +1458,7 @@ 
     {
         static $set_in_progress = false;
         // don't update the timezone if it's already set ?
-        if (($only_if_not_set && $this->_timezone !== '') ) {
+        if (($only_if_not_set && $this->_timezone !== '')) {
             return;
         }
         $valid_timezone = ! empty($timezone) && $this->_timezone && $timezone !== $this->_timezone
@@ -1488,8 +1488,8 @@ 
         foreach ($model_fields as $field_name => $field_obj) {
             if ($field_obj instanceof EE_Datetime_Field) {
                 $field_obj->set_timezone($this->_timezone);
-                if (isset($this->_fields[ $field_name ]) && $this->_fields[ $field_name ] instanceof DateTime) {
-                    EEH_DTT_Helper::setTimezone($this->_fields[ $field_name ], $TZ);
+                if (isset($this->_fields[$field_name]) && $this->_fields[$field_name] instanceof DateTime) {
+                    EEH_DTT_Helper::setTimezone($this->_fields[$field_name], $TZ);
                 }
             }
         }
@@ -1524,7 +1524,7 @@ 
      */
     public function get_format($full = true)
     {
-        return $full ? $this->_dt_frmt . ' ' . $this->_tm_frmt : [$this->_dt_frmt, $this->_tm_frmt];
+        return $full ? $this->_dt_frmt.' '.$this->_tm_frmt : [$this->_dt_frmt, $this->_tm_frmt];
     }
 
 
@@ -1548,8 +1548,8 @@ 
         $current_cache_id = ''
     ) {
         // verify that incoming object is of the correct type
-        $obj_class = 'EE_' . $relationName;
-        if (! $newly_saved_object instanceof $obj_class) {
+        $obj_class = 'EE_'.$relationName;
+        if ( ! $newly_saved_object instanceof $obj_class) {
             return false;
         }
 		$this->updateTimezoneOnRelated($newly_saved_object);
@@ -1559,18 +1559,18 @@ 
         // if this is a 1:1 relationship
         if ($relationship_to_model instanceof EE_Belongs_To_Relation) {
             // then just replace the cached object with the newly saved object
-            $this->_model_relations[ $relationName ] = $newly_saved_object;
+            $this->_model_relations[$relationName] = $newly_saved_object;
             return true;
         }
         // or if it's some kind of sordid feral polyamorous relationship...
         if (
-            is_array($this->_model_relations[ $relationName ])
-            && isset($this->_model_relations[ $relationName ][ $current_cache_id ])
+            is_array($this->_model_relations[$relationName])
+            && isset($this->_model_relations[$relationName][$current_cache_id])
         ) {
             // then remove the current cached item
-            unset($this->_model_relations[ $relationName ][ $current_cache_id ]);
+            unset($this->_model_relations[$relationName][$current_cache_id]);
             // and cache the newly saved object using it's new ID
-            $this->_model_relations[ $relationName ][ $newly_saved_object->ID() ] = $newly_saved_object;
+            $this->_model_relations[$relationName][$newly_saved_object->ID()] = $newly_saved_object;
             return true;
         }
         return false;
@@ -1712,7 +1712,7 @@ 
     public function get_DateTime_object($field_name)
     {
         $field_settings = $this->_model->field_settings_for($field_name);
-        if (! $field_settings instanceof EE_Datetime_Field) {
+        if ( ! $field_settings instanceof EE_Datetime_Field) {
             EE_Error::add_error(
                 sprintf(
                     esc_html__(
@@ -1727,8 +1727,8 @@ 
             );
             return false;
         }
-        return isset($this->_fields[ $field_name ]) && $this->_fields[ $field_name ] instanceof DateTime
-            ? clone $this->_fields[ $field_name ]
+        return isset($this->_fields[$field_name]) && $this->_fields[$field_name] instanceof DateTime
+            ? clone $this->_fields[$field_name]
             : null;
     }
 
@@ -1974,7 +1974,7 @@ 
      */
     public function get_i18n_datetime($field_name, $format = '')
     {
-        $format = empty($format) ? $this->_dt_frmt . ' ' . $this->_tm_frmt : $format;
+        $format = empty($format) ? $this->_dt_frmt.' '.$this->_tm_frmt : $format;
         return date_i18n(
             $format,
             EEH_DTT_Helper::get_timestamp_with_offset(
@@ -1998,9 +1998,9 @@ 
     public function get_raw($field_name)
     {
         $field_settings = $this->_model->field_settings_for($field_name);
-        return $field_settings instanceof EE_Datetime_Field && $this->_fields[ $field_name ] instanceof DateTime
-            ? $this->_fields[ $field_name ]->format('U')
-            : $this->_fields[ $field_name ];
+        return $field_settings instanceof EE_Datetime_Field && $this->_fields[$field_name] instanceof DateTime
+            ? $this->_fields[$field_name]->format('U')
+            : $this->_fields[$field_name];
     }
 
 
@@ -2040,7 +2040,7 @@ 
         $this->set_timezone($timezone);
         $fn   = (array) $field_name;
         $args = array_merge($fn, (array) $args);
-        if (! method_exists($this, $callback)) {
+        if ( ! method_exists($this, $callback)) {
             throw new EE_Error(
                 sprintf(
                     esc_html__(
@@ -2052,7 +2052,7 @@ 
             );
         }
         $args   = (array) $args;
-        $return = $prepend . call_user_func_array([$this, $callback], $args) . $append;
+        $return = $prepend.call_user_func_array([$this, $callback], $args).$append;
         $this->set_timezone($original_timezone);
         return $return;
     }
@@ -2165,8 +2165,8 @@ 
     public function refresh_cache_of_related_objects()
     {
         foreach ($this->_model->relation_settings() as $relation_name => $relation_obj) {
-            if (! empty($this->_model_relations[ $relation_name ])) {
-                $related_objects = $this->_model_relations[ $relation_name ];
+            if ( ! empty($this->_model_relations[$relation_name])) {
+                $related_objects = $this->_model_relations[$relation_name];
                 if ($relation_obj instanceof EE_Belongs_To_Relation) {
                     // this relation only stores a single model object, not an array
                     // but let's make it consistent
@@ -2211,7 +2211,7 @@ 
     {
         $relationship_to_model = $this->_model->related_settings_for($relationName);
         $index_in_cache        = '';
-        if (! $relationship_to_model) {
+        if ( ! $relationship_to_model) {
             throw new EE_Error(
                 sprintf(
                     esc_html__('There is no relationship to %s on a %s. Cannot clear that cache', 'event_espresso'),
@@ -2222,10 +2222,10 @@ 
         }
         if ($clear_all) {
             $obj_removed                             = true;
-            $this->_model_relations[ $relationName ] = null;
+            $this->_model_relations[$relationName] = null;
         } elseif ($relationship_to_model instanceof EE_Belongs_To_Relation) {
-            $obj_removed                             = $this->_model_relations[ $relationName ];
-            $this->_model_relations[ $relationName ] = null;
+            $obj_removed                             = $this->_model_relations[$relationName];
+            $this->_model_relations[$relationName] = null;
         } else {
             if (
                 $object_to_remove_or_index_into_array instanceof EE_Base_Class
@@ -2233,12 +2233,12 @@ 
             ) {
                 $index_in_cache = $object_to_remove_or_index_into_array->ID();
                 if (
-                    is_array($this->_model_relations[ $relationName ])
-                    && ! isset($this->_model_relations[ $relationName ][ $index_in_cache ])
+                    is_array($this->_model_relations[$relationName])
+                    && ! isset($this->_model_relations[$relationName][$index_in_cache])
                 ) {
                     $index_found_at = null;
                     // find this object in the array even though it has a different key
-                    foreach ($this->_model_relations[ $relationName ] as $index => $obj) {
+                    foreach ($this->_model_relations[$relationName] as $index => $obj) {
                         /** @noinspection TypeUnsafeComparisonInspection */
                         if (
                             $obj instanceof EE_Base_Class
@@ -2272,9 +2272,9 @@ 
             }
             // supposedly we've found it. But it could just be that the client code
             // provided a bad index/object
-            if (isset($this->_model_relations[ $relationName ][ $index_in_cache ])) {
-                $obj_removed = $this->_model_relations[ $relationName ][ $index_in_cache ];
-                unset($this->_model_relations[ $relationName ][ $index_in_cache ]);
+            if (isset($this->_model_relations[$relationName][$index_in_cache])) {
+                $obj_removed = $this->_model_relations[$relationName][$index_in_cache];
+                unset($this->_model_relations[$relationName][$index_in_cache]);
             } else {
                 // that thing was never cached anyways.
                 $obj_removed = null;
@@ -2302,27 +2302,27 @@ 
     public function save_new_cached_related_model_objs()
     {
         // make sure this has been saved
-        if (! $this->ID()) {
+        if ( ! $this->ID()) {
             $id = $this->save();
         } else {
             $id = $this->ID();
         }
         // now save all the NEW cached model objects  (ie they don't exist in the DB)
         foreach ($this->_model->relation_settings() as $relationName => $relationObj) {
-            if ($this->_model_relations[ $relationName ]) {
+            if ($this->_model_relations[$relationName]) {
                 // is this a relation where we should expect just ONE related object (ie, EE_Belongs_To_relation)
                 // or MANY related objects (ie, EE_HABTM_Relation or EE_Has_Many_Relation)?
                 /* @var $related_model_obj EE_Base_Class */
                 if ($relationObj instanceof EE_Belongs_To_Relation) {
                     // add a relation to that relation type (which saves the appropriate thing in the process)
                     // but ONLY if it DOES NOT exist in the DB
-                    $related_model_obj = $this->_model_relations[ $relationName ];
+                    $related_model_obj = $this->_model_relations[$relationName];
                     // if( ! $related_model_obj->ID()){
                     $this->_add_relation_to($related_model_obj, $relationName);
                     $related_model_obj->save_new_cached_related_model_objs();
                     // }
                 } else {
-                    foreach ($this->_model_relations[ $relationName ] as $related_model_obj) {
+                    foreach ($this->_model_relations[$relationName] as $related_model_obj) {
                         // add a relation to that relation type (which saves the appropriate thing in the process)
                         // but ONLY if it DOES NOT exist in the DB
                         // if( ! $related_model_obj->ID()){
@@ -2383,7 +2383,7 @@ 
             }
         } else {
             // this thing doesn't exist in the DB,  so just cache it
-            if (! $otherObjectModelObjectOrID instanceof EE_Base_Class) {
+            if ( ! $otherObjectModelObjectOrID instanceof EE_Base_Class) {
                 throw new EE_Error(
                     sprintf(
                         esc_html__(
@@ -2650,7 +2650,7 @@ 
      */
     public function is_set($field_name)
     {
-        return isset($this->_fields[ $field_name ]);
+        return isset($this->_fields[$field_name]);
     }
 
 
@@ -2685,7 +2685,7 @@ 
     {
         $className = get_class($this);
         $tagName   = "FHEE__{$className}__{$methodName}";
-        if (! has_filter($tagName)) {
+        if ( ! has_filter($tagName)) {
             throw new EE_Error(
                 sprintf(
                     esc_html__(
@@ -2759,17 +2759,17 @@ 
             );
             foreach ($extra_meta_objs as $extra_meta_obj) {
                 if ($extra_meta_obj instanceof EE_Extra_Meta) {
-                    $return_array[ $extra_meta_obj->key() ] = $extra_meta_obj->value();
+                    $return_array[$extra_meta_obj->key()] = $extra_meta_obj->value();
                 }
             }
         } else {
             $extra_meta_objs = $this->get_many_related('Extra_Meta');
             foreach ($extra_meta_objs as $extra_meta_obj) {
                 if ($extra_meta_obj instanceof EE_Extra_Meta) {
-                    if (! isset($return_array[ $extra_meta_obj->key() ])) {
-                        $return_array[ $extra_meta_obj->key() ] = [];
+                    if ( ! isset($return_array[$extra_meta_obj->key()])) {
+                        $return_array[$extra_meta_obj->key()] = [];
                     }
-                    $return_array[ $extra_meta_obj->key() ][ $extra_meta_obj->ID() ] = $extra_meta_obj->value();
+                    $return_array[$extra_meta_obj->key()][$extra_meta_obj->ID()] = $extra_meta_obj->value();
                 }
             }
         }
@@ -2805,8 +2805,8 @@ 
                             'event_espresso'
                         ),
                         $this->ID(),
-                        get_class($this->get_model()) . '::instance()->add_to_entity_map()',
-                        get_class($this->get_model()) . '::instance()->refresh_entity_map()'
+                        get_class($this->get_model()).'::instance()->add_to_entity_map()',
+                        get_class($this->get_model()).'::instance()->refresh_entity_map()'
                     )
                 );
             }
@@ -2895,7 +2895,7 @@ 
     {
         // First make sure this model object actually exists in the DB. It would be silly to try to update it in the DB
         // if it wasn't even there to start off.
-        if (! $this->ID()) {
+        if ( ! $this->ID()) {
             $this->save();
         }
         global $wpdb;
@@ -2935,7 +2935,7 @@ 
             $table_pk_field_name = $table_obj->get_pk_column();
         }
 
-        $query  =
+        $query =
             "UPDATE `{$table_name}`
             SET "
             . $new_value_sql
@@ -2983,7 +2983,7 @@ 
         $properties = [];
         // remove prepended underscore
         foreach ($fields as $field_name => $settings) {
-            $properties[ $field_name ] = $this->get($field_name);
+            $properties[$field_name] = $this->get($field_name);
         }
         return $properties;
     }
@@ -3119,7 +3119,7 @@ 
     {
         foreach ($this->_model->relation_settings() as $relation_name => $relation_obj) {
             if ($relation_obj instanceof EE_Belongs_To_Relation) {
-                $classname = 'EE_' . $this->_model->get_this_model_name();
+                $classname = 'EE_'.$this->_model->get_this_model_name();
                 if (
                     $this->get_one_from_cache($relation_name) instanceof $classname
                     && $this->get_one_from_cache($relation_name)->ID()
@@ -3164,7 +3164,7 @@ 
         // handle DateTimes (this is handled in here because there's no one specific child class that uses datetimes).
         foreach ($this->_fields as $field => $value) {
             if ($value instanceof DateTime) {
-                $this->_fields[ $field ] = clone $value;
+                $this->_fields[$field] = clone $value;
             }
         }
     }
@@ -3231,21 +3231,21 @@ 
         $what = in_array($what, ['T', 'D', 'B']) ? $what : 'T';
         switch ($what) {
             case 'T':
-                $this->_fields[ $field_name ] = $field->prepare_for_set_with_new_time(
+                $this->_fields[$field_name] = $field->prepare_for_set_with_new_time(
                     $datetime_value,
-                    $this->_fields[ $field_name ]
+                    $this->_fields[$field_name]
                 );
                 $this->_has_changes           = true;
                 break;
             case 'D':
-                $this->_fields[ $field_name ] = $field->prepare_for_set_with_new_date(
+                $this->_fields[$field_name] = $field->prepare_for_set_with_new_date(
                     $datetime_value,
-                    $this->_fields[ $field_name ]
+                    $this->_fields[$field_name]
                 );
                 $this->_has_changes           = true;
                 break;
             case 'B':
-                $this->_fields[ $field_name ] = $field->prepare_for_set($datetime_value);
+                $this->_fields[$field_name] = $field->prepare_for_set($datetime_value);
                 $this->_has_changes           = true;
                 break;
         }
@@ -3314,7 +3314,7 @@ 
     {
         foreach ((array) $properties as $property_name) {
             // first make sure this property exists
-            if (! $this->_fields[ $property_name ]) {
+            if ( ! $this->_fields[$property_name]) {
                 throw new EE_Error(
                     sprintf(
                         esc_html__(
@@ -3336,7 +3336,7 @@ 
      */
     private function setDateAndTimeFormats(array $date_formats)
     {
-        if (! empty($date_formats) && is_array($date_formats)) {
+        if ( ! empty($date_formats) && is_array($date_formats)) {
             list($this->_dt_frmt, $this->_tm_frmt) = $date_formats;
         } else {
             // set default formats for date and time
@@ -3356,7 +3356,7 @@ 
     {
         // verify client code has not passed any invalid field names
         foreach ($fieldValues as $field_name => $field_value) {
-            if (! isset($model_fields[ $field_name ])) {
+            if ( ! isset($model_fields[$field_name])) {
                 throw new EE_Error(
                     sprintf(
                         esc_html__(
@@ -3388,14 +3388,14 @@ 
                 // client code has indicated these field values are from the database
                 $this->set_from_db(
                     $fieldName,
-                    isset($fieldValues[ $fieldName ]) ? $fieldValues[ $fieldName ] : null
+                    isset($fieldValues[$fieldName]) ? $fieldValues[$fieldName] : null
                 );
             } else {
                 // we're constructing a brand new instance of the model object.
                 // Generally, this means we'll need to do more field validation
                 $this->set(
                     $fieldName,
-                    isset($fieldValues[ $fieldName ]) ? $fieldValues[ $fieldName ] : null,
+                    isset($fieldValues[$fieldName]) ? $fieldValues[$fieldName] : null,
                     true
                 );
             }

core/db_classes/EE_Currency_Payment_Method.class.php

Doc Comments +1 added lines, -1 removed lines

@@ -44,7 +44,7 @@
      * @param array  $props_n_values  incoming values from the database
      * @param string $timezone        incoming timezone as set by the model.  If not set the timezone for
      *                                the website will be used.
-     * @return EE_Attendee
+     * @return EE_Currency_Payment_Method
      */
     public static function new_instance_from_db($props_n_values = array(), $timezone = '')
     {

Indentation +32 added lines, -32 removed lines

@@ -14,40 +14,40 @@
 class EE_Currency_Payment_Method extends EE_Base_Class
 {
 
-    /** Currency to Payment Method Link ID @var CPM_ID */
-    protected $_CPM_ID = null;
-    /** Currency Code @var CUR_code */
-    protected $_CUR_code = null;
-    /** Payment Method ID @var PMD_ID */
-    protected $_PMD_ID = null;
-    protected $_Payment_Method;
-    protected $_Currency;
+	/** Currency to Payment Method Link ID @var CPM_ID */
+	protected $_CPM_ID = null;
+	/** Currency Code @var CUR_code */
+	protected $_CUR_code = null;
+	/** Payment Method ID @var PMD_ID */
+	protected $_PMD_ID = null;
+	protected $_Payment_Method;
+	protected $_Currency;
 
 
-    /**
-     *
-     * @param array  $props_n_values          incoming values
-     * @param string $timezone                incoming timezone (if not set the timezone set for the website will be
-     *                                        used.)
-     * @param array  $date_formats            incoming date_formats in an array where the first value is the
-     *                                        date_format and the second value is the time format
-     * @return EE_Attendee
-     */
-    public static function new_instance($props_n_values = array(), $timezone = '', $date_formats = array())
-    {
-        $has_object = parent::_check_for_object($props_n_values, __CLASS__, $timezone, $date_formats);
-        return $has_object ? $has_object : new self($props_n_values, false, $timezone, $date_formats);
-    }
+	/**
+	 *
+	 * @param array  $props_n_values          incoming values
+	 * @param string $timezone                incoming timezone (if not set the timezone set for the website will be
+	 *                                        used.)
+	 * @param array  $date_formats            incoming date_formats in an array where the first value is the
+	 *                                        date_format and the second value is the time format
+	 * @return EE_Attendee
+	 */
+	public static function new_instance($props_n_values = array(), $timezone = '', $date_formats = array())
+	{
+		$has_object = parent::_check_for_object($props_n_values, __CLASS__, $timezone, $date_formats);
+		return $has_object ? $has_object : new self($props_n_values, false, $timezone, $date_formats);
+	}
 
 
-    /**
-     * @param array  $props_n_values  incoming values from the database
-     * @param string $timezone        incoming timezone as set by the model.  If not set the timezone for
-     *                                the website will be used.
-     * @return EE_Attendee
-     */
-    public static function new_instance_from_db($props_n_values = array(), $timezone = '')
-    {
-        return new self($props_n_values, true, $timezone);
-    }
+	/**
+	 * @param array  $props_n_values  incoming values from the database
+	 * @param string $timezone        incoming timezone as set by the model.  If not set the timezone for
+	 *                                the website will be used.
+	 * @return EE_Attendee
+	 */
+	public static function new_instance_from_db($props_n_values = array(), $timezone = '')
+	{
+		return new self($props_n_values, true, $timezone);
+	}
 }