/**
  * 更新序号
  */
 public function actionSeq()
 {
     $ids = explode('_', $this->get('ids', ''));
     $seq = 0;
     foreach ($ids as $id) {
         if ($id != '') {
             Permission::updateAll(['seq' => $seq], ['id' => $id]);
             $seq++;
         }
     }
 }