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<?php |
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/** |
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* @package Polylang |
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*/ |
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|
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/** |
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* A class to manage copy and synchronization of post metas |
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* |
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* @since 2.3 |
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*/ |
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class PLL_Sync_Post_Metas extends PLL_Sync_Metas { |
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public $options; |
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|
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/** |
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* Constructor |
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* |
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* @since 2.3 |
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* |
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* @param object $polylang |
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*/ |
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public function __construct( &$polylang ) { |
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$this->meta_type = 'post'; |
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|
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parent::__construct( $polylang ); |
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|
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$this->options = &$polylang->options; |
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|
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add_filter( 'pll_translate_post_meta', array( $this, 'translate_thumbnail_id' ), 10, 3 ); |
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} |
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|
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/** |
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* Get the custom fields to copy or synchronize |
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* |
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* @since 2.3 |
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* |
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* @param int $from Id of the post from which we copy informations |
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* @param int $to Id of the post to which we paste informations |
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* @param string $lang Language slug |
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* @param bool $sync True if it is synchronization, false if it is a copy |
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* @return array List of meta keys |
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*/ |
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protected function get_metas_to_copy( $from, $to, $lang, $sync = false ) { |
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// Copy or synchronize post metas and allow plugins to do the same |
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$metas = get_post_custom( $from ); |
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$keys = array(); |
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|
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// Get public meta keys ( including from translated post in case we just deleted a custom field ) |
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if ( ! $sync || in_array( 'post_meta', $this->options['sync'] ) ) { |
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foreach ( $keys = array_unique( array_merge( array_keys( $metas ), array_keys( get_post_custom( $to ) ) ) ) as $k => $meta_key ) { |
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if ( is_protected_meta( $meta_key ) ) { |
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unset( $keys[ $k ] ); |
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} |
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} |
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} |
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|
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// Add page template and featured image |
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foreach ( array( '_wp_page_template', '_thumbnail_id' ) as $meta ) { |
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if ( ! $sync || in_array( $meta, $this->options['sync'] ) ) { |
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$keys[] = $meta; |
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} |
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} |
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|
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if ( $this->options['media_support'] ) { |
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$keys[] = '_wp_attached_file'; |
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$keys[] = '_wp_attachment_metadata'; |
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$keys[] = '_wp_attachment_backup_sizes'; |
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$keys[] = '_wp_attachment_is_custom_header'; // Random header image |
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} |
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|
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/** This filter is documented in modules/sync/sync-metas.php */ |
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return array_unique( apply_filters( 'pll_copy_post_metas', $keys, $sync, $from, $to, $lang ) ); |
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} |
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|
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/** |
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* Translates the thumbnail id |
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* |
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* @since 2.3 |
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* |
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* @param int $value Thumbnail id |
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* @param string $key Meta key |
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* @param string $lang Language code |
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* @return int |
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*/ |
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public function translate_thumbnail_id( $value, $key, $lang ) { |
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return ( $this->options['media_support'] && '_thumbnail_id' === $key && $to_value = $this->model->post->get_translation( $value, $lang ) ) ? $to_value : $value; |
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} |
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} |
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|
