/**
  * Creates a new TrainTeachers model.
  * If creation is successful, the browser will be redirected to the 'view' page.
  * @return mixed
  */
 public function actionCreate()
 {
     $train_id = Yii::$app->request->get('train_id');
     $trainName = Train::getOneTrainNameById($train_id);
     $model = new TrainTeachers();
     $model->trainName = $trainName;
     $model->trainId = $train_id;
     if (Yii::$app->request->isPost) {
         if ($model->load(Yii::$app->request->post()) && $model->save()) {
             return $this->redirect(['view', 'id' => $model->id]);
         }
     } else {
         return $this->render('create', ['model' => $model]);
     }
 }