public function execute()
 {
     $id = waRequest::get('id', null, waRequest::TYPE_INT);
     if (!$id) {
         throw new waException("Can't change status of comment: unknown id");
     }
     $status = waRequest::post('status', '', waRequest::TYPE_STRING_TRIM);
     if ($status == photosCommentModel::STATUS_DELETED || $status == photosCommentModel::STATUS_PUBLISHED) {
         $comment_model = new photosCommentModel();
         $comment_model->updateById($id, array('status' => $status));
     } else {
         $this->errors['unknown_status'] = _w('Unknown status');
     }
 }