public function actionDelete()
 {
     $model = new Category();
     $params = $this->request->getParams();
     $id = $params['id'];
     if (empty($id)) {
         throw new TQExceptionHandle("Record not found.", 404);
     }
     if (!$model->findByPk($id)) {
         throw new TQExceptionHandle("Record not found.", 404);
     }
     if ($model->delete()) {
         $this->setFlashMessage('warning', 'Delete success!');
         $this->redirect('category/index');
     }
 }