/**
  * Creates a new Feedback model.
  * If creation is successful, the browser will be redirected to the 'view' page.
  * @return mixed
  */
 public function actionCreate()
 {
     $model = new Feedback();
     $model->scenario = 'create';
     if ($model->load(Yii::$app->request->post())) {
         $model->file = UploadedFile::getInstance($model, 'file');
         $model->save();
         return $this->redirect(['index']);
     }
     return $this->render('create', ['model' => $model]);
 }