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<?php
/**
* Dummy field accessor that does nothing and returns an empty string.
*
* Useful for unsaved field instances.
*/
final class WPCF_Field_Accessor_Dummy extends WPCF_Field_Accessor_Abstract {
public function __construct() {
parent::__construct( 0, '', false );
}
/**
* @return mixed Field value from the database.
*/
public function get_raw_value() {
return '';
}
/**
* @param mixed $value New value to be saved to the database.
* @param mixed $prev_value Previous field value. Use if updating an item in a repetitive field.
*
* @return mixed
*/
public function update_raw_value( $value, $prev_value = '' ) {
// Nothing to do here, although this being called might indicate an error.
return true;
}
/**
* Delete field value from the database.
*
* @param string $value Specific value to be deleted. Use if deleting an item in a repetitive field.
*
* @return mixed
*/
public function delete_raw_value( $value = '' ) {
// Nothing to do here, although this being called might indicate an error.
return true;
}
/**
* Add new metadata. Note that if the accessor is set up for a repetitive field, the is_unique argument
* of add_*_meta should be false and otherwise it should be true.
*
* @link https://developer.wordpress.org/reference/functions/add_term_meta/
*
* @param mixed $value New value to be saved to the database
*
* @return mixed
*/
public function add_raw_value( $value ) {
// Nothing to do here, although this being called might indicate an error.
return true;
}
}