public function actionTrainIndex()
 {
     $levelId = \Yii::$app->request->get('levelId') ? \Yii::$app->request->get('levelId') : Yii::$app->user->identity->level_id + 1;
     $userId = \Yii::$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);
     $trainList = TrainUsers::getAllTrainByUserIdAndLevel($userId, $levelId);
     if (!empty($trainList)) {
         foreach ($trainList as $key => $val) {
             $trainList[$key]['userInfo'] = UsersInfo::findOne(['user_id' => $val['train_user_id']]);
             $trainList[$key]['userEducation'] = UsersEducation::findOne(['user_id' => $val['train_user_id']]);
             $trainList[$key]['userLevel'] = UsersLevel::findOne(['user_id' => Yii::$app->user->id, 'level_id' => Yii::$app->user->identity->level_id, 'status' => UsersLevel::TRAIN]);
         }
     }
     $data = ['levelName' => $levelName, 'currentTrain' => $currentTrain, 'levelId' => $levelId, 'trainList' => $trainList, 'photo' => $photo, 'messageCount' => $messageCount];
     return $this->render('train-index', ['data' => $data]);
 }