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<?php |
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class Jetpack_Sync_Module_Meta extends Jetpack_Sync_Module { |
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private $meta_types = array( 'post', 'comment' ); |
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private $post_meta_whitelist = array(); |
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public function name() { |
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return 'meta'; |
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} |
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public function set_defaults() { |
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$this->post_meta_whitelist = Jetpack_Sync_Defaults::$default_whitelist_post_meta_keys; |
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$this->comment_meta_whitelist = Jetpack_Sync_Defaults::$default_whitelist_comment_meta_keys; |
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} |
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/** |
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* This implementation of get_objects_by_id() is a bit hacky since we're not passing in an array of meta IDs, |
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* but instead an array of post or comment IDs for which to retrieve meta for. On top of that, |
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* we also pass in an associative array where we expect there to be 'meta_key' and 'ids' keys present. |
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* |
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* This seemed to be required since if we have missing meta on WP.com and need to fetch it, we don't know what |
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* the meta key is, but we do know that we have missing meta for a given post or comment. |
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* |
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* @param string $object_type The type of object for which we retrieve meta. Either 'post' or 'comment' |
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* @param array $config Must include 'meta_key' and 'ids' keys |
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* |
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* @return array |
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*/ |
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public function get_objects_by_id( $object_type, $config ) { |
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global $wpdb; |
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if ( ! in_array( $object_type, $this->meta_types ) ) { |
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return array(); |
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} |
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if ( ! isset( $config['meta_key'] ) || ! isset( $config['ids'] ) || ! is_array( $config['ids'] ) ) { |
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return array(); |
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} |
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$meta_key = $config['meta_key']; |
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$ids = $config['ids']; |
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if ( ! $this->is_meta_key_allowed( $meta_key ) ) { |
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return array(); |
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} |
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if ( 'post' == $object_type ) { |
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$table = $wpdb->postmeta; |
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$object_id_column = 'post_id'; |
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} else { |
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$table = $wpdb->commentmeta; |
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$object_id_column = 'comment_id'; |
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} |
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// Sanitize so that the array only has integer values |
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$ids_string = implode( ', ', array_map( 'intval', $ids ) ); |
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$metas = $wpdb->get_results( |
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$wpdb->prepare( |
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"SELECT * FROM {$table} WHERE {$object_id_column} IN ( {$ids_string} ) AND meta_key = %s", |
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$meta_key |
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) |
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); |
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$meta_objects = array(); |
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foreach( (array) $metas as $meta_object ) { |
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$meta_object = (array) $meta_object; |
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$meta_objects[ $meta_object[ $object_id_column ] ] = array( |
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'meta_type' => $object_type, |
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'meta_id' => $meta_object['meta_id'], |
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'meta_key' => $meta_key, |
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'meta_value' => $meta_object['meta_value'], |
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'object_id' => $meta_object[ $object_id_column ], |
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); |
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} |
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return $meta_objects; |
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} |
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public function init_listeners( $callable ) { |
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foreach ( $this->meta_types as $meta_type ) { |
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add_action( "added_{$meta_type}_meta", $callable, 10, 4 ); |
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add_action( "updated_{$meta_type}_meta", $callable, 10, 4 ); |
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add_action( "deleted_{$meta_type}_meta", $callable, 10, 4 ); |
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$whitelist_handler = array( $this, 'filter_meta_' . $meta_type ); |
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add_filter( "jetpack_sync_before_enqueue_added_{$meta_type}_meta", $whitelist_handler ); |
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add_filter( "jetpack_sync_before_enqueue_updated_{$meta_type}_meta", $whitelist_handler ); |
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add_filter( "jetpack_sync_before_enqueue_deleted_{$meta_type}_meta", $whitelist_handler ); |
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} |
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} |
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// POST Meta |
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function set_post_meta_whitelist( $post_meta ) { |
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$this->post_meta_whitelist = (array) $post_meta; |
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} |
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function get_post_meta_whitelist() { |
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return $this->post_meta_whitelist; |
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} |
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function is_whitelisted_post_meta( $meta_key ) { |
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return in_array( $meta_key, $this->post_meta_whitelist ); |
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} |
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// Comment Meta |
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function set_comment_meta_whitelist( $comment_meta ) { |
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$this->comment_meta_whitelist = (array) $comment_meta; |
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} |
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function get_comment_meta_whitelist() { |
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return $this->comment_meta_whitelist; |
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} |
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function is_whitelisted_comment_meta( $meta_key ) { |
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return in_array( $meta_key, $this->comment_meta_whitelist ); |
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} |
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function is_post_type_allowed( $post_id ) { |
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$post = get_post( $post_id ); |
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return ! in_array( $post->post_type, Jetpack_Sync_Settings::get_setting( 'post_types_blacklist' ) ); |
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} |
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function filter_meta_post( $args ) { |
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if ( ! $this->is_whitelisted_post_meta( $args[2] ) ) { |
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return false; |
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} |
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return ( $this->is_post_type_allowed( $args[1] ) ? $args : false ); |
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} |
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function filter_meta_comment( $args ) { |
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return ( $this->is_whitelisted_comment_meta( $args[2] ) ? $args : false ); |
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} |
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} |
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Automattic /
jetpack
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If you need to make a property accessible to another context you can either raise its visibility level or provide an accessible getter in the defining class.