Custom field for CMB2 which adds a post-search dialog for searching/attaching other post IDs
См. ссылку: https://github.com/WebDevStudios/CMB2-Post-Search-field
С версии: 0.2.4
Автор: WebDevstudios (contact@webdevstudios.com)
Документация по классу CMB2_Post_Search_field
Пример #1
0
 /**
  * Creates or returns an instance of this class.
  * @since  0.2.4
  * @return CMB2_Post_Search_field A single instance of this class.
  */
 public static function get_instance()
 {
     if (null === self::$single_instance) {
         self::$single_instance = new self();
     }
     return self::$single_instance;
 }