/**
  * Creates a new Portfolio model.
  * If creation is successful, the browser will be redirected to the 'view' page.
  * @return mixed
  */
 public function actionCreate()
 {
     $model = new Portfolio(['scenario' => 'create']);
     if ($model->load(Yii::$app->request->post())) {
         $model->image = UploadedFile::getInstance($model, 'image');
         if ($model->validate() && $model->save() && $model->image) {
             $model->image->saveAs(Yii::getAlias('@webroot/uploads/portfolio/' . $model->id . '.jpg'));
             return $this->redirect(['view', 'id' => $model->id]);
         }
     }
     return $this->render('create', ['model' => $model]);
 }