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<?php |
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namespace GV; |
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/** If this file is called directly, abort. */ |
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if ( ! defined( 'GRAVITYVIEW_DIR' ) ) { |
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die(); |
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} |
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/** |
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* The internal \GF_Field field object wrapper. |
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* |
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* Used for custom content fields, etc. |
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*/ |
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class Internal_Field extends Field { |
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/** |
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* @var \GravityView_Field|false The backing GravityView field (old). False if none exists. |
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*/ |
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public $field; |
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/** |
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* Create self from a configuration array. |
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* |
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* @param array $configuration The configuration array. |
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* @see \GV\Field::as_configuration() |
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* @internal |
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* @since 2.0 |
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* |
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* @return \GV\Internal_Field|null The field implementation or null on error. |
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*/ |
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public static function from_configuration( $configuration ) { |
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if ( empty( $configuration['id'] ) || ! is_string( $configuration['id'] ) ) { |
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gravityview()->log->error( 'Invalid configuration[id] supplied.' ); |
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return null; |
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} |
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$field = self::by_id( $configuration['id'] ); |
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$field->update_configuration( $configuration ); |
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return $field; |
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} |
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/** |
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* Get a \GV\GF_Field from an internal Gravity Forms field ID. |
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* |
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* @param int $field_id The internal Gravity Forms field ID. |
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* |
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* @return \GV\Internal_Field|null The requested field or null if not found. |
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*/ |
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public static function by_id( $field_id ) { |
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$field = new self(); |
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$field->ID = $field_id; |
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$field->type = $field->ID; |
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/** |
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* Retrieve the internal backing field (old for now) |
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* @todo switch to future subclasses |
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*/ |
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$field->field = \GravityView_Fields::get_instance( $field_id ); |
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return $field; |
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} |
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/** |
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* Retrieve the label for this field. |
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* |
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* @param \GV\View $view The view for this context if applicable. |
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* @param \GV\Source $source The source (form) for this context if applicable. |
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* @param \GV\Entry $entry The entry for this context if applicable. |
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* @param \GV\Request $request The request for this context if applicable. |
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* |
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* @return string The label for this field. |
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*/ |
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public function get_label( View $view = null, Source $source = null, Entry $entry = null, Request $request = null ) { |
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if ( ! $this->show_label ) { |
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return ''; |
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} |
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if ( $label = parent::get_label( $view, $source, $entry, $request ) ) { |
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return $label; |
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} |
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if ( $this->label ) { |
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return $this->label; |
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} |
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return $this->field ? $this->field->label : ''; |
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} |
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/** |
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* Retrieve the value for this field. |
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* |
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* Requires the \GV\Entry in this implementation. |
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* |
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* @param \GV\View $view The view for this context if applicable. |
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* @param \GV\Source $source The source (form) for this context if applicable. |
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* @param \GV\Entry $entry The entry for this context if applicable. |
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* @param \GV\Request $request The request for this context if applicable. |
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* |
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* @return mixed The value for this field. |
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*/ |
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public function get_value( View $view = null, Source $source = null, Entry $entry = null, Request $request = null ) { |
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if ( ! $entry || ! is_a( $entry, '\GV\Entry' ) ) { |
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gravityview()->log->error( '$entry is not a valid \GV\Entry instance' ); |
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return null; |
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} |
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/** |
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* @todo Implement in subclasses, once available. |
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* |
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* For example the "content" field will be empty here. It's |
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* value is actually currently retrieved inside ... |
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* |
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* *drumroll* |
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* |
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* A TEMPLATE :) |
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*/ |
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$value = Utils::get( $entry->as_entry(), $this->ID ); |
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/** Apply parent filters. */ |
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return $this->get_value_filters( $value, $view, $source, $entry, $request ); |
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} |
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} |
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In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: