eventespresso / event-espresso-core

core/libraries/batch/JobHandlers/RegistrationsReport.php

Indentation +395 added lines, -396 removed lines

@@ -17,7 +17,7 @@ 
 use EventEspressoBatchRequest\Helpers\JobStepResponse;
 
 if ( ! defined('EVENT_ESPRESSO_VERSION')) {
-    exit('No direct script access allowed');
+	exit('No direct script access allowed');
 }
 
 
@@ -25,424 +25,423 @@ 
 class RegistrationsReport extends JobHandlerFile
 {
 
-    /**
-     * Performs any necessary setup for starting the job. This is also a good
-     * place to setup the $job_arguments which will be used for subsequent HTTP requests
-     * when continue_job will be called
-     *
-     * @param JobParameters $job_parameters
-     * @throws BatchRequestException
-     * @return JobStepResponse
-     */
-    public function create_job(JobParameters $job_parameters)
-    {
-        $event_id = intval($job_parameters->request_datum('EVT_ID', '0'));
-        if ( ! \EE_Capabilities::instance()->current_user_can('ee_read_registrations', 'generating_report')) {
-            throw new BatchRequestException(__('You do not have permission to view registrations', 'event_espresso'));
-        }
-        $filepath = $this->create_file_from_job_with_name($job_parameters->job_id(),
-            $this->get_filename($event_id));
-        $job_parameters->add_extra_data('filepath', $filepath);
-        if ($job_parameters->request_datum('use_filters', false)) {
-            $query_params = maybe_unserialize(stripslashes($job_parameters->request_datum('filters', array())));
-        } else {
-            $query_params = apply_filters('FHEE__EE_Export__report_registration_for_event', array(
-                array(
-                    'OR'                 => array(
-                        //don't include registrations from failed or abandoned transactions...
-                        'Transaction.STS_ID' => array(
-                            'NOT IN',
-                            array(
-                                \EEM_Transaction::failed_status_code,
-                                \EEM_Transaction::abandoned_status_code,
-                            ),
-                        ),
-                        //unless the registration is approved, in which case include it regardless of transaction status
-                        'STS_ID'             => \EEM_Registration::status_id_approved,
-                    ),
-                    'Ticket.TKT_deleted' => array('IN', array(true, false)),
-                ),
-                'order_by'   => array('Transaction.TXN_ID' => 'asc', 'REG_count' => 'asc'),
-                'force_join' => array('Transaction', 'Ticket', 'Attendee'),
-                'caps'       => \EEM_Base::caps_read_admin,
-            ), $event_id);
-            if ($event_id) {
-                $query_params[0]['EVT_ID'] = $event_id;
-            } else {
-                $query_params['force_join'][] = 'Event';
-            }
-        }
-        if ( ! isset($query_params['force_join'])) {
-            $query_params['force_join'] = array('Event', 'Transaction', 'Ticket', 'Attendee');
-        }
-        $job_parameters->add_extra_data('query_params', $query_params);
-        $question_labels = $this->_get_question_labels($query_params);
-        $job_parameters->add_extra_data('question_labels', $question_labels);
-        $job_parameters->set_job_size(
-            \EEM_Registration::instance()->count(
-                array_diff_key(
-                    $query_params,
-                    array_flip(
-                        array( 'limit' )
-                    )
-                )
-            )
-        );
-        //we should also set the header columns
-        $csv_data_for_row = $this->get_csv_data_for($event_id, 0, 1, $job_parameters->extra_datum('question_labels'),
-            $job_parameters->extra_datum('query_params'));
-        \EEH_Export::write_data_array_to_csv($filepath, $csv_data_for_row, true);
-        //if we actually processed a row there, record it
-        if ($job_parameters->job_size()) {
-            $job_parameters->mark_processed(1);
-        }
-        return new JobStepResponse($job_parameters,
-            __('Registrations report started successfully...', 'event_espresso'));
-    }
+	/**
+	 * Performs any necessary setup for starting the job. This is also a good
+	 * place to setup the $job_arguments which will be used for subsequent HTTP requests
+	 * when continue_job will be called
+	 *
+	 * @param JobParameters $job_parameters
+	 * @throws BatchRequestException
+	 * @return JobStepResponse
+	 */
+	public function create_job(JobParameters $job_parameters)
+	{
+		$event_id = intval($job_parameters->request_datum('EVT_ID', '0'));
+		if ( ! \EE_Capabilities::instance()->current_user_can('ee_read_registrations', 'generating_report')) {
+			throw new BatchRequestException(__('You do not have permission to view registrations', 'event_espresso'));
+		}
+		$filepath = $this->create_file_from_job_with_name($job_parameters->job_id(),
+			$this->get_filename($event_id));
+		$job_parameters->add_extra_data('filepath', $filepath);
+		if ($job_parameters->request_datum('use_filters', false)) {
+			$query_params = maybe_unserialize(stripslashes($job_parameters->request_datum('filters', array())));
+		} else {
+			$query_params = apply_filters('FHEE__EE_Export__report_registration_for_event', array(
+				array(
+					'OR'                 => array(
+						//don't include registrations from failed or abandoned transactions...
+						'Transaction.STS_ID' => array(
+							'NOT IN',
+							array(
+								\EEM_Transaction::failed_status_code,
+								\EEM_Transaction::abandoned_status_code,
+							),
+						),
+						//unless the registration is approved, in which case include it regardless of transaction status
+						'STS_ID'             => \EEM_Registration::status_id_approved,
+					),
+					'Ticket.TKT_deleted' => array('IN', array(true, false)),
+				),
+				'order_by'   => array('Transaction.TXN_ID' => 'asc', 'REG_count' => 'asc'),
+				'force_join' => array('Transaction', 'Ticket', 'Attendee'),
+				'caps'       => \EEM_Base::caps_read_admin,
+			), $event_id);
+			if ($event_id) {
+				$query_params[0]['EVT_ID'] = $event_id;
+			} else {
+				$query_params['force_join'][] = 'Event';
+			}
+		}
+		if ( ! isset($query_params['force_join'])) {
+			$query_params['force_join'] = array('Event', 'Transaction', 'Ticket', 'Attendee');
+		}
+		$job_parameters->add_extra_data('query_params', $query_params);
+		$question_labels = $this->_get_question_labels($query_params);
+		$job_parameters->add_extra_data('question_labels', $question_labels);
+		$job_parameters->set_job_size(
+			\EEM_Registration::instance()->count(
+				array_diff_key(
+					$query_params,
+					array_flip(
+						array( 'limit' )
+					)
+				)
+			)
+		);
+		//we should also set the header columns
+		$csv_data_for_row = $this->get_csv_data_for($event_id, 0, 1, $job_parameters->extra_datum('question_labels'),
+			$job_parameters->extra_datum('query_params'));
+		\EEH_Export::write_data_array_to_csv($filepath, $csv_data_for_row, true);
+		//if we actually processed a row there, record it
+		if ($job_parameters->job_size()) {
+			$job_parameters->mark_processed(1);
+		}
+		return new JobStepResponse($job_parameters,
+			__('Registrations report started successfully...', 'event_espresso'));
+	}
 
 
 
-    /**
-     * Gets the filename
-     * @return string
-     */
-    protected function get_filename()
-    {
-        return sprintf("event-espresso-registrations-%s.csv", str_replace(':', '-', current_time('mysql')));
-    }
+	/**
+	 * Gets the filename
+	 * @return string
+	 */
+	protected function get_filename()
+	{
+		return sprintf("event-espresso-registrations-%s.csv", str_replace(':', '-', current_time('mysql')));
+	}
 
 
 
-    /**
-     * Gets the questions which are to be used for this report, so they
-     * can be remembered for later
-     *
-     * @param array $registration_query_params
-     * @return array question admin labels to be used for this report
-     */
-    protected function _get_question_labels($registration_query_params)
-    {
-        $where = isset($registration_query_params[0]) ? $registration_query_params[0] : null;
-        $question_query_params = array();
-        if ($where !== null) {
-            $question_query_params = array(
-                $this->_change_registration_where_params_to_question_where_params($registration_query_params[0]),
-            );
-        }
-        $question_query_params[0]['Answer.ANS_ID'] = array( 'IS_NOT_NULL' );
-        $question_query_params['group_by'] = array( 'QST_ID' );
-        return array_unique( \EEM_Question::instance()->get_col( $question_query_params, 'QST_admin_label' ) );
-    }
+	/**
+	 * Gets the questions which are to be used for this report, so they
+	 * can be remembered for later
+	 *
+	 * @param array $registration_query_params
+	 * @return array question admin labels to be used for this report
+	 */
+	protected function _get_question_labels($registration_query_params)
+	{
+		$where = isset($registration_query_params[0]) ? $registration_query_params[0] : null;
+		$question_query_params = array();
+		if ($where !== null) {
+			$question_query_params = array(
+				$this->_change_registration_where_params_to_question_where_params($registration_query_params[0]),
+			);
+		}
+		$question_query_params[0]['Answer.ANS_ID'] = array( 'IS_NOT_NULL' );
+		$question_query_params['group_by'] = array( 'QST_ID' );
+		return array_unique( \EEM_Question::instance()->get_col( $question_query_params, 'QST_admin_label' ) );
+	}
 
 
 
-    /**
-     * Takes where params meant for registrations and changes them to work for questions
-     *
-     * @param array $reg_where_params
-     * @return array
-     */
-    protected function _change_registration_where_params_to_question_where_params($reg_where_params)
-    {
-        $question_where_params = array();
-        foreach ($reg_where_params as $key => $val) {
-            if (\EEM_Registration::instance()->is_logic_query_param_key($key)) {
-                $question_where_params[$key] = $this->_change_registration_where_params_to_question_where_params($val);
-            } else {
-                //it's a normal where condition
-                $question_where_params['Question_Group.Event.Registration.' . $key] = $val;
-            }
-        }
-        return $question_where_params;
-    }
+	/**
+	 * Takes where params meant for registrations and changes them to work for questions
+	 *
+	 * @param array $reg_where_params
+	 * @return array
+	 */
+	protected function _change_registration_where_params_to_question_where_params($reg_where_params)
+	{
+		$question_where_params = array();
+		foreach ($reg_where_params as $key => $val) {
+			if (\EEM_Registration::instance()->is_logic_query_param_key($key)) {
+				$question_where_params[$key] = $this->_change_registration_where_params_to_question_where_params($val);
+			} else {
+				//it's a normal where condition
+				$question_where_params['Question_Group.Event.Registration.' . $key] = $val;
+			}
+		}
+		return $question_where_params;
+	}
 
 
 
-    /**
-     * Performs another step of the job
-     *
-     * @param JobParameters $job_parameters
-     * @param int           $batch_size
-     * @return JobStepResponse
-     * @throws \EE_Error
-     */
-    public function continue_job(JobParameters $job_parameters, $batch_size = 50)
-    {
-        if( $job_parameters->units_processed() < $job_parameters->job_size() ) {
-            $csv_data = $this->get_csv_data_for($job_parameters->request_datum('EVT_ID', '0'),
-                $job_parameters->units_processed(), $batch_size, $job_parameters->extra_datum('question_labels'),
-                $job_parameters->extra_datum('query_params'));
-            \EEH_Export::write_data_array_to_csv($job_parameters->extra_datum('filepath'), $csv_data, false);
-            $units_processed = count($csv_data);
-        }else{
-            $units_processed = 0;
-        }
-        $job_parameters->mark_processed($units_processed);
-        $extra_response_data = array(
-            'file_url' => '',
-        );
-        if ($units_processed < $batch_size) {
-            $job_parameters->set_status(JobParameters::status_complete);
-            $extra_response_data['file_url'] = $this->get_url_to_file($job_parameters->extra_datum('filepath'));
-        }
+	/**
+	 * Performs another step of the job
+	 *
+	 * @param JobParameters $job_parameters
+	 * @param int           $batch_size
+	 * @return JobStepResponse
+	 * @throws \EE_Error
+	 */
+	public function continue_job(JobParameters $job_parameters, $batch_size = 50)
+	{
+		if( $job_parameters->units_processed() < $job_parameters->job_size() ) {
+			$csv_data = $this->get_csv_data_for($job_parameters->request_datum('EVT_ID', '0'),
+				$job_parameters->units_processed(), $batch_size, $job_parameters->extra_datum('question_labels'),
+				$job_parameters->extra_datum('query_params'));
+			\EEH_Export::write_data_array_to_csv($job_parameters->extra_datum('filepath'), $csv_data, false);
+			$units_processed = count($csv_data);
+		}else{
+			$units_processed = 0;
+		}
+		$job_parameters->mark_processed($units_processed);
+		$extra_response_data = array(
+			'file_url' => '',
+		);
+		if ($units_processed < $batch_size) {
+			$job_parameters->set_status(JobParameters::status_complete);
+			$extra_response_data['file_url'] = $this->get_url_to_file($job_parameters->extra_datum('filepath'));
+		}
 
-        return new JobStepResponse($job_parameters,
-            sprintf(__('Wrote %1$s rows to report CSV file...', 'event_espresso'), count($csv_data)),
-            $extra_response_data);
-    }
+		return new JobStepResponse($job_parameters,
+			sprintf(__('Wrote %1$s rows to report CSV file...', 'event_espresso'), count($csv_data)),
+			$extra_response_data);
+	}
 
 
 
-    /**
-     * Gets the csv data for a batch of registrations
-
-     *
+	/**
+	 * Gets the csv data for a batch of registrations
+	 *
 *@param int|null    $event_id
-     * @param int   $offset
-     * @param int   $limit
-     * @param array $question_labels the IDs for all the questions which were answered by someone in this selection
-     * @param array $query_params    for using where querying the model
-     * @return array top-level keys are numeric, next-level keys are column headers
-     */
-    function get_csv_data_for($event_id, $offset, $limit, $question_labels, $query_params)
-    {
-        $reg_fields_to_include = array(
-            'TXN_ID',
-            'ATT_ID',
-            'REG_ID',
-            'REG_date',
-            'REG_code',
-            'REG_count',
-            'REG_final_price',
-        );
-        $att_fields_to_include = array(
-            'ATT_fname',
-            'ATT_lname',
-            'ATT_email',
-            'ATT_address',
-            'ATT_address2',
-            'ATT_city',
-            'STA_ID',
-            'CNT_ISO',
-            'ATT_zip',
-            'ATT_phone',
-        );
-        $registrations_csv_ready_array = array();
-        $reg_model = \EE_Registry::instance()->load_model('Registration');
-        $query_params['limit'] = array($offset, $limit);
-        $registration_rows = $reg_model->get_all_wpdb_results($query_params);
-        $registration_ids = array();
-        foreach ($registration_rows as $reg_row) {
-            $registration_ids[] = intval($reg_row['Registration.REG_ID']);
-        }
-        foreach ($registration_rows as $reg_row) {
-            if (is_array($reg_row)) {
-                $reg_csv_array = array();
-                if ( ! $event_id) {
-                    //get the event's name and Id
-                    $reg_csv_array[__('Event', 'event_espresso')] = sprintf(__('%1$s (%2$s)', 'event_espresso'),
-                        \EEH_Export::prepare_value_from_db_for_display(\EEM_Event::instance(), 'EVT_name',
-                            $reg_row['Event_CPT.post_title']), $reg_row['Event_CPT.ID']);
-                }
-                $is_primary_reg = $reg_row['Registration.REG_count'] == '1' ? true : false;
-                /*@var $reg_row EE_Registration */
-                foreach ($reg_fields_to_include as $field_name) {
-                    $field = $reg_model->field_settings_for($field_name);
-                    if ($field_name == 'REG_final_price') {
-                        $value = \EEH_Export::prepare_value_from_db_for_display($reg_model, $field_name,
-                            $reg_row['Registration.REG_final_price'], 'localized_float');
-                    } elseif ($field_name == 'REG_count') {
-                        $value = sprintf(__('%s of %s', 'event_espresso'),
-                            \EEH_Export::prepare_value_from_db_for_display($reg_model, 'REG_count',
-                                $reg_row['Registration.REG_count']),
-                            \EEH_Export::prepare_value_from_db_for_display($reg_model, 'REG_group_size',
-                                $reg_row['Registration.REG_group_size']));
-                    } elseif ($field_name == 'REG_date') {
-                        $value = \EEH_Export::prepare_value_from_db_for_display($reg_model, $field_name,
-                            $reg_row['Registration.REG_date'], 'no_html');
-                    } else {
-                        $value = \EEH_Export::prepare_value_from_db_for_display($reg_model, $field_name,
-                            $reg_row[$field->get_qualified_column()]);
-                    }
-                    $reg_csv_array[\EEH_Export::get_column_name_for_field($field)] = $value;
-                    if ($field_name == 'REG_final_price') {
-                        //add a column named Currency after the final price
-                        $reg_csv_array[__("Currency", "event_espresso")] = \EE_Config::instance()->currency->code;
-                    }
-                }
-                //get pretty status
-                $stati = \EEM_Status::instance()->localized_status(array(
-                    $reg_row['Registration.STS_ID']     => __('unknown', 'event_espresso'),
-                    $reg_row['TransactionTable.STS_ID'] => __('unknown', 'event_espresso'),
-                ), false, 'sentence');
-                $reg_csv_array[__("Registration Status", 'event_espresso')] = $stati[$reg_row['Registration.STS_ID']];
-                //get pretty transaction status
-                $reg_csv_array[__("Transaction Status",
-                    'event_espresso')] = $stati[$reg_row['TransactionTable.STS_ID']];
-                $reg_csv_array[__('Transaction Amount Due', 'event_espresso')] = $is_primary_reg
-                    ? \EEH_Export::prepare_value_from_db_for_display(\EEM_Transaction::instance(), 'TXN_total',
-                        $reg_row['TransactionTable.TXN_total'], 'localized_float') : '0.00';
-                $reg_csv_array[__('Amount Paid', 'event_espresso')] = $is_primary_reg
-                    ? \EEH_Export::prepare_value_from_db_for_display(\EEM_Transaction::instance(), 'TXN_paid',
-                        $reg_row['TransactionTable.TXN_paid'], 'localized_float') : '0.00';
-                $payment_methods = array();
-                $gateway_txn_ids_etc = array();
-                $payment_times = array();
-                if ($is_primary_reg && $reg_row['TransactionTable.TXN_ID']) {
-                    $payments_info = \EEM_Payment::instance()->get_all_wpdb_results(array(
-                        array(
-                            'TXN_ID' => $reg_row['TransactionTable.TXN_ID'],
-                            'STS_ID' => \EEM_Payment::status_id_approved,
-                        ),
-                        'force_join' => array('Payment_Method'),
-                    ), ARRAY_A,
-                        'Payment_Method.PMD_admin_name as name, Payment.PAY_txn_id_chq_nmbr as gateway_txn_id, Payment.PAY_timestamp as payment_time');
-                    foreach ($payments_info as $payment_method_and_gateway_txn_id) {
-                        $payment_methods[] = isset($payment_method_and_gateway_txn_id['name'])
-                            ? $payment_method_and_gateway_txn_id['name'] : __('Unknown', 'event_espresso');
-                        $gateway_txn_ids_etc[] = isset($payment_method_and_gateway_txn_id['gateway_txn_id'])
-                            ? $payment_method_and_gateway_txn_id['gateway_txn_id'] : '';
-                        $payment_times[] = isset($payment_method_and_gateway_txn_id['payment_time'])
-                            ? $payment_method_and_gateway_txn_id['payment_time'] : '';
-                    }
-                }
-                $reg_csv_array[__('Payment Date(s)', 'event_espresso')] = implode(',', $payment_times);
-                $reg_csv_array[__('Payment Method(s)', 'event_espresso')] = implode(",", $payment_methods);
-                $reg_csv_array[__('Gateway Transaction ID(s)', 'event_espresso')] = implode(',', $gateway_txn_ids_etc);
-                //get whether or not the user has checked in
-                $reg_csv_array[__("Check-Ins",
-                    "event_espresso")] = $reg_model->count_related($reg_row['Registration.REG_ID'], 'Checkin');
-                //get ticket of registration and its price
-                $ticket_model = \EE_Registry::instance()->load_model('Ticket');
-                if ($reg_row['Ticket.TKT_ID']) {
-                    $ticket_name = \EEH_Export::prepare_value_from_db_for_display($ticket_model, 'TKT_name',
-                        $reg_row['Ticket.TKT_name']);
-                    $datetimes_strings = array();
-                    foreach (
-                        \EEM_Datetime::instance()->get_all_wpdb_results(array(
-                            array('Ticket.TKT_ID' => $reg_row['Ticket.TKT_ID']),
-                            'order_by'                 => array('DTT_EVT_start' => 'ASC'),
-                            'default_where_conditions' => 'none',
-                        )) as $datetime
-                    ) {
-                        $datetimes_strings[] = \EEH_Export::prepare_value_from_db_for_display(\EEM_Datetime::instance(),
-                            'DTT_EVT_start', $datetime['Datetime.DTT_EVT_start']);
-                    }
-                } else {
-                    $ticket_name = __('Unknown', 'event_espresso');
-                    $datetimes_strings = array(__('Unknown', 'event_espresso'));
-                }
-                $reg_csv_array[$ticket_model->field_settings_for('TKT_name')->get_nicename()] = $ticket_name;
-                $reg_csv_array[__("Datetimes of Ticket", "event_espresso")] = implode(", ", $datetimes_strings);
-                //get datetime(s) of registration
-                //add attendee columns
-                foreach ($att_fields_to_include as $att_field_name) {
-                    $field_obj = \EEM_Attendee::instance()->field_settings_for($att_field_name);
-                    if ($reg_row['Attendee_CPT.ID']) {
-                        if ($att_field_name == 'STA_ID') {
-                            $value = \EEM_State::instance()
-                                               ->get_var(array(array('STA_ID' => $reg_row['Attendee_Meta.STA_ID'])),
-                                                   'STA_name');
-                        } elseif ($att_field_name == 'CNT_ISO') {
-                            $value = \EEM_Country::instance()
-                                                 ->get_var(array(array('CNT_ISO' => $reg_row['Attendee_Meta.CNT_ISO'])),
-                                                     'CNT_name');
-                        } else {
-                            $value = \EEH_Export::prepare_value_from_db_for_display(\EEM_Attendee::instance(),
-                                $att_field_name, $reg_row[$field_obj->get_qualified_column()]);
-                        }
-                    } else {
-                        $value = '';
-                    }
-                    $reg_csv_array[\EEH_Export::get_column_name_for_field($field_obj)] = $value;
-                }
-                //make sure each registration has the same questions in the same order
-                foreach ($question_labels as $question_label) {
-                    if ( ! isset($reg_csv_array[$question_label])) {
-                        $reg_csv_array[$question_label] = null;
-                    }
-                }
-                $answers = \EEM_Answer::instance()->get_all_wpdb_results(array(
-                    array('REG_ID' => $reg_row['Registration.REG_ID']),
-                    'force_join' => array('Question'),
-                ));
-                //now fill out the questions THEY answered
-                foreach ($answers as $answer_row) {
-                    if ($answer_row['Question.QST_ID']) {
-                        $question_label = \EEH_Export::prepare_value_from_db_for_display(\EEM_Question::instance(),
-                            'QST_admin_label', $answer_row['Question.QST_admin_label']);
-                    } else {
-                        $question_label = sprintf(__('Question $s', 'event_espresso'), $answer_row['Answer.QST_ID']);
-                    }
-                    if (isset($answer_row['Question.QST_type'])
-                        && $answer_row['Question.QST_type'] == \EEM_Question::QST_type_state
-                    ) {
-                        $reg_csv_array[$question_label] = \EEM_State::instance()
-                                                                    ->get_state_name_by_ID($answer_row['Answer.ANS_value']);
-                    } else {
-                        //this isn't for html, so don't show html entities
-                        $reg_csv_array[$question_label] = html_entity_decode(\EEH_Export::prepare_value_from_db_for_display(\EEM_Answer::instance(),
-                            'ANS_value', $answer_row['Answer.ANS_value']));
-                    }
-                }
-                $registrations_csv_ready_array[] = apply_filters('FHEE__EE_Export__report_registrations__reg_csv_array',
-                    $reg_csv_array, $reg_row);
-            }
-        }
-        //if we couldn't export anything, we want to at least show the column headers
-        if (empty($registrations_csv_ready_array)) {
-            $reg_csv_array = array();
-            $model_and_fields_to_include = array(
-                'Registration' => $reg_fields_to_include,
-                'Attendee'     => $att_fields_to_include,
-            );
-            foreach ($model_and_fields_to_include as $model_name => $field_list) {
-                $model = \EE_Registry::instance()->load_model($model_name);
-                foreach ($field_list as $field_name) {
-                    $field = $model->field_settings_for($field_name);
-                    $reg_csv_array[\EEH_Export::get_column_name_for_field($field)] = null;
-                }
-            }
-            $registrations_csv_ready_array[] = $reg_csv_array;
-        }
-        return $registrations_csv_ready_array;
-    }
+	 * @param int   $offset
+	 * @param int   $limit
+	 * @param array $question_labels the IDs for all the questions which were answered by someone in this selection
+	 * @param array $query_params    for using where querying the model
+	 * @return array top-level keys are numeric, next-level keys are column headers
+	 */
+	function get_csv_data_for($event_id, $offset, $limit, $question_labels, $query_params)
+	{
+		$reg_fields_to_include = array(
+			'TXN_ID',
+			'ATT_ID',
+			'REG_ID',
+			'REG_date',
+			'REG_code',
+			'REG_count',
+			'REG_final_price',
+		);
+		$att_fields_to_include = array(
+			'ATT_fname',
+			'ATT_lname',
+			'ATT_email',
+			'ATT_address',
+			'ATT_address2',
+			'ATT_city',
+			'STA_ID',
+			'CNT_ISO',
+			'ATT_zip',
+			'ATT_phone',
+		);
+		$registrations_csv_ready_array = array();
+		$reg_model = \EE_Registry::instance()->load_model('Registration');
+		$query_params['limit'] = array($offset, $limit);
+		$registration_rows = $reg_model->get_all_wpdb_results($query_params);
+		$registration_ids = array();
+		foreach ($registration_rows as $reg_row) {
+			$registration_ids[] = intval($reg_row['Registration.REG_ID']);
+		}
+		foreach ($registration_rows as $reg_row) {
+			if (is_array($reg_row)) {
+				$reg_csv_array = array();
+				if ( ! $event_id) {
+					//get the event's name and Id
+					$reg_csv_array[__('Event', 'event_espresso')] = sprintf(__('%1$s (%2$s)', 'event_espresso'),
+						\EEH_Export::prepare_value_from_db_for_display(\EEM_Event::instance(), 'EVT_name',
+							$reg_row['Event_CPT.post_title']), $reg_row['Event_CPT.ID']);
+				}
+				$is_primary_reg = $reg_row['Registration.REG_count'] == '1' ? true : false;
+				/*@var $reg_row EE_Registration */
+				foreach ($reg_fields_to_include as $field_name) {
+					$field = $reg_model->field_settings_for($field_name);
+					if ($field_name == 'REG_final_price') {
+						$value = \EEH_Export::prepare_value_from_db_for_display($reg_model, $field_name,
+							$reg_row['Registration.REG_final_price'], 'localized_float');
+					} elseif ($field_name == 'REG_count') {
+						$value = sprintf(__('%s of %s', 'event_espresso'),
+							\EEH_Export::prepare_value_from_db_for_display($reg_model, 'REG_count',
+								$reg_row['Registration.REG_count']),
+							\EEH_Export::prepare_value_from_db_for_display($reg_model, 'REG_group_size',
+								$reg_row['Registration.REG_group_size']));
+					} elseif ($field_name == 'REG_date') {
+						$value = \EEH_Export::prepare_value_from_db_for_display($reg_model, $field_name,
+							$reg_row['Registration.REG_date'], 'no_html');
+					} else {
+						$value = \EEH_Export::prepare_value_from_db_for_display($reg_model, $field_name,
+							$reg_row[$field->get_qualified_column()]);
+					}
+					$reg_csv_array[\EEH_Export::get_column_name_for_field($field)] = $value;
+					if ($field_name == 'REG_final_price') {
+						//add a column named Currency after the final price
+						$reg_csv_array[__("Currency", "event_espresso")] = \EE_Config::instance()->currency->code;
+					}
+				}
+				//get pretty status
+				$stati = \EEM_Status::instance()->localized_status(array(
+					$reg_row['Registration.STS_ID']     => __('unknown', 'event_espresso'),
+					$reg_row['TransactionTable.STS_ID'] => __('unknown', 'event_espresso'),
+				), false, 'sentence');
+				$reg_csv_array[__("Registration Status", 'event_espresso')] = $stati[$reg_row['Registration.STS_ID']];
+				//get pretty transaction status
+				$reg_csv_array[__("Transaction Status",
+					'event_espresso')] = $stati[$reg_row['TransactionTable.STS_ID']];
+				$reg_csv_array[__('Transaction Amount Due', 'event_espresso')] = $is_primary_reg
+					? \EEH_Export::prepare_value_from_db_for_display(\EEM_Transaction::instance(), 'TXN_total',
+						$reg_row['TransactionTable.TXN_total'], 'localized_float') : '0.00';
+				$reg_csv_array[__('Amount Paid', 'event_espresso')] = $is_primary_reg
+					? \EEH_Export::prepare_value_from_db_for_display(\EEM_Transaction::instance(), 'TXN_paid',
+						$reg_row['TransactionTable.TXN_paid'], 'localized_float') : '0.00';
+				$payment_methods = array();
+				$gateway_txn_ids_etc = array();
+				$payment_times = array();
+				if ($is_primary_reg && $reg_row['TransactionTable.TXN_ID']) {
+					$payments_info = \EEM_Payment::instance()->get_all_wpdb_results(array(
+						array(
+							'TXN_ID' => $reg_row['TransactionTable.TXN_ID'],
+							'STS_ID' => \EEM_Payment::status_id_approved,
+						),
+						'force_join' => array('Payment_Method'),
+					), ARRAY_A,
+						'Payment_Method.PMD_admin_name as name, Payment.PAY_txn_id_chq_nmbr as gateway_txn_id, Payment.PAY_timestamp as payment_time');
+					foreach ($payments_info as $payment_method_and_gateway_txn_id) {
+						$payment_methods[] = isset($payment_method_and_gateway_txn_id['name'])
+							? $payment_method_and_gateway_txn_id['name'] : __('Unknown', 'event_espresso');
+						$gateway_txn_ids_etc[] = isset($payment_method_and_gateway_txn_id['gateway_txn_id'])
+							? $payment_method_and_gateway_txn_id['gateway_txn_id'] : '';
+						$payment_times[] = isset($payment_method_and_gateway_txn_id['payment_time'])
+							? $payment_method_and_gateway_txn_id['payment_time'] : '';
+					}
+				}
+				$reg_csv_array[__('Payment Date(s)', 'event_espresso')] = implode(',', $payment_times);
+				$reg_csv_array[__('Payment Method(s)', 'event_espresso')] = implode(",", $payment_methods);
+				$reg_csv_array[__('Gateway Transaction ID(s)', 'event_espresso')] = implode(',', $gateway_txn_ids_etc);
+				//get whether or not the user has checked in
+				$reg_csv_array[__("Check-Ins",
+					"event_espresso")] = $reg_model->count_related($reg_row['Registration.REG_ID'], 'Checkin');
+				//get ticket of registration and its price
+				$ticket_model = \EE_Registry::instance()->load_model('Ticket');
+				if ($reg_row['Ticket.TKT_ID']) {
+					$ticket_name = \EEH_Export::prepare_value_from_db_for_display($ticket_model, 'TKT_name',
+						$reg_row['Ticket.TKT_name']);
+					$datetimes_strings = array();
+					foreach (
+						\EEM_Datetime::instance()->get_all_wpdb_results(array(
+							array('Ticket.TKT_ID' => $reg_row['Ticket.TKT_ID']),
+							'order_by'                 => array('DTT_EVT_start' => 'ASC'),
+							'default_where_conditions' => 'none',
+						)) as $datetime
+					) {
+						$datetimes_strings[] = \EEH_Export::prepare_value_from_db_for_display(\EEM_Datetime::instance(),
+							'DTT_EVT_start', $datetime['Datetime.DTT_EVT_start']);
+					}
+				} else {
+					$ticket_name = __('Unknown', 'event_espresso');
+					$datetimes_strings = array(__('Unknown', 'event_espresso'));
+				}
+				$reg_csv_array[$ticket_model->field_settings_for('TKT_name')->get_nicename()] = $ticket_name;
+				$reg_csv_array[__("Datetimes of Ticket", "event_espresso")] = implode(", ", $datetimes_strings);
+				//get datetime(s) of registration
+				//add attendee columns
+				foreach ($att_fields_to_include as $att_field_name) {
+					$field_obj = \EEM_Attendee::instance()->field_settings_for($att_field_name);
+					if ($reg_row['Attendee_CPT.ID']) {
+						if ($att_field_name == 'STA_ID') {
+							$value = \EEM_State::instance()
+											   ->get_var(array(array('STA_ID' => $reg_row['Attendee_Meta.STA_ID'])),
+												   'STA_name');
+						} elseif ($att_field_name == 'CNT_ISO') {
+							$value = \EEM_Country::instance()
+												 ->get_var(array(array('CNT_ISO' => $reg_row['Attendee_Meta.CNT_ISO'])),
+													 'CNT_name');
+						} else {
+							$value = \EEH_Export::prepare_value_from_db_for_display(\EEM_Attendee::instance(),
+								$att_field_name, $reg_row[$field_obj->get_qualified_column()]);
+						}
+					} else {
+						$value = '';
+					}
+					$reg_csv_array[\EEH_Export::get_column_name_for_field($field_obj)] = $value;
+				}
+				//make sure each registration has the same questions in the same order
+				foreach ($question_labels as $question_label) {
+					if ( ! isset($reg_csv_array[$question_label])) {
+						$reg_csv_array[$question_label] = null;
+					}
+				}
+				$answers = \EEM_Answer::instance()->get_all_wpdb_results(array(
+					array('REG_ID' => $reg_row['Registration.REG_ID']),
+					'force_join' => array('Question'),
+				));
+				//now fill out the questions THEY answered
+				foreach ($answers as $answer_row) {
+					if ($answer_row['Question.QST_ID']) {
+						$question_label = \EEH_Export::prepare_value_from_db_for_display(\EEM_Question::instance(),
+							'QST_admin_label', $answer_row['Question.QST_admin_label']);
+					} else {
+						$question_label = sprintf(__('Question $s', 'event_espresso'), $answer_row['Answer.QST_ID']);
+					}
+					if (isset($answer_row['Question.QST_type'])
+						&& $answer_row['Question.QST_type'] == \EEM_Question::QST_type_state
+					) {
+						$reg_csv_array[$question_label] = \EEM_State::instance()
+																	->get_state_name_by_ID($answer_row['Answer.ANS_value']);
+					} else {
+						//this isn't for html, so don't show html entities
+						$reg_csv_array[$question_label] = html_entity_decode(\EEH_Export::prepare_value_from_db_for_display(\EEM_Answer::instance(),
+							'ANS_value', $answer_row['Answer.ANS_value']));
+					}
+				}
+				$registrations_csv_ready_array[] = apply_filters('FHEE__EE_Export__report_registrations__reg_csv_array',
+					$reg_csv_array, $reg_row);
+			}
+		}
+		//if we couldn't export anything, we want to at least show the column headers
+		if (empty($registrations_csv_ready_array)) {
+			$reg_csv_array = array();
+			$model_and_fields_to_include = array(
+				'Registration' => $reg_fields_to_include,
+				'Attendee'     => $att_fields_to_include,
+			);
+			foreach ($model_and_fields_to_include as $model_name => $field_list) {
+				$model = \EE_Registry::instance()->load_model($model_name);
+				foreach ($field_list as $field_name) {
+					$field = $model->field_settings_for($field_name);
+					$reg_csv_array[\EEH_Export::get_column_name_for_field($field)] = null;
+				}
+			}
+			$registrations_csv_ready_array[] = $reg_csv_array;
+		}
+		return $registrations_csv_ready_array;
+	}
 
 
 
-    /**
-     * Counts total unit to process
-     *
-     * @deprecated since 4.9.19
-     * @param int|array $event_id
-     * @return int
-     */
-    public function count_units_to_process($event_id)
-    {
-        //use the legacy filter
-        if ($event_id) {
-            $query_params[0]['EVT_ID'] = $event_id;
-        } else {
-            $query_params['force_join'][] = 'Event';
-        }
-        return \EEM_Registration::instance()->count($query_params);
-    }
+	/**
+	 * Counts total unit to process
+	 *
+	 * @deprecated since 4.9.19
+	 * @param int|array $event_id
+	 * @return int
+	 */
+	public function count_units_to_process($event_id)
+	{
+		//use the legacy filter
+		if ($event_id) {
+			$query_params[0]['EVT_ID'] = $event_id;
+		} else {
+			$query_params['force_join'][] = 'Event';
+		}
+		return \EEM_Registration::instance()->count($query_params);
+	}
 
 
 
-    /**
-     * Performs any clean-up logic when we know the job is completed.
-     * In this case, we delete the temporary file
-     *
-     * @param JobParameters $job_parameters
-     * @return boolean
-     */
-    public function cleanup_job(JobParameters $job_parameters)
-    {
-        $this->_file_helper->delete(\EEH_File::remove_filename_from_filepath($job_parameters->extra_datum('filepath')),
-            true, 'd');
-        return new JobStepResponse($job_parameters, __('Cleaned up temporary file', 'event_espresso'));
-    }
+	/**
+	 * Performs any clean-up logic when we know the job is completed.
+	 * In this case, we delete the temporary file
+	 *
+	 * @param JobParameters $job_parameters
+	 * @return boolean
+	 */
+	public function cleanup_job(JobParameters $job_parameters)
+	{
+		$this->_file_helper->delete(\EEH_File::remove_filename_from_filepath($job_parameters->extra_datum('filepath')),
+			true, 'd');
+		return new JobStepResponse($job_parameters, __('Cleaned up temporary file', 'event_espresso'));
+	}
 }