public function actionSystemComment()
 {
     if (Yii::$app->request->isPost) {
         $idList = Yii::$app->request->post('id_list');
         if (!empty($idList)) {
             $result = MessagesUsers::deleteAll(['id' => $idList]);
             if (!$result) {
                 throw new ServerErrorHttpException('删除错误');
             } else {
                 return $this->redirect('/user-center/system-comment');
             }
         }
     } else {
         MessagesUsers::updateAll(['status' => 1], ['users_id' => Yii::$app->user->id, 'type' => [2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]]);
         $modelAndPages = MessagesUsers::getSystemMessages(\Yii::$app->user->id);
         $levelName = Level::getOneLevelNameById(Yii::$app->user->identity->level_id);
         $photo = UsersInfo::getPhotoByUserId(\Yii::$app->user->id);
         $messageCount = MessagesUsers::getCountByUserIdAndType(\Yii::$app->user->id);
         $currentTrain = TrainUsers::getTrainByUserId(Yii::$app->user->id);
         $data = ['model' => $modelAndPages, 'levelName' => $levelName, 'currentTrain' => $currentTrain, 'photo' => $photo, 'messageCount' => $messageCount];
         return $this->render('system-comment', ['data' => $data]);
     }
 }