Yarik / artbox1

  <?php
      namespace common\modules\comment\behaviors;
      
      use common\modules\comment\models\CommentModel;
      use yii\base\Behavior;
      use yii\base\Event;
      use yii\db\ActiveRecord;

      class ParentBehavior extends Behavior
      {

          public function events()
          {
              return [
                  ActiveRecord::EVENT_AFTER_VALIDATE => 'afterValidate',
              ];
          }

          /**
           * @param Event $event
           */

          public function afterValidate($event)
          {

              /**
               * @var CommentModel $owner
               */
              $owner = $this->owner;

              if(!empty( $owner->artbox_comment_pid )) {

                  /**
                   * @var CommentModel $parent
                   */

                  $parent = CommentModel::find()
                                        ->where([ 'artbox_comment_id' => $owner->artbox_comment_pid ])
                                        ->one();
                  if(!empty( $parent->artbox_comment_pid )) {

                      $owner->related_id = $owner->artbox_comment_pid;
                      $owner->artbox_comment_pid = $parent->artbox_comment_pid;
                  }
              }
          }
      }