public function actionCreate()
 {
     $model = new District();
     if ($model->load(Yii::$app->request->post())) {
         $image = $model->uploadImage();
         if ($model->save()) {
             if ($image !== false) {
                 $path = $model->getImageFile();
                 $image->saveAs($path);
                 $this->saveThumb($model);
             }
             return $this->redirect(['view', 'id' => $model->id]);
         }
     }
     return $this->render('create', ['model' => $model]);
 }