/**
  * Creates a new Mailbox model.
  * If creation is successful, the browser will be redirected to the 'view' page.
  * @return mixed
  */
 public function actionCreate()
 {
     $model = new Mailbox(['status' => 1]);
     if ($model->load(Yii::$app->request->post())) {
         $model->sender = Yii::$app->user->id;
         $receivers = $model->receiver;
         if (count($receivers) > 1) {
             $receivers = $model->receiver;
             foreach ($receivers as $receiver) {
                 $model2 = new Mailbox();
                 $model2->attributes = $model->attributes;
                 $model2->receiver = $receiver;
                 $model2->save();
             }
         } else {
             if ($model->save()) {
             }
         }
         return $this->redirect(['index']);
     } else {
         return $this->render('create', ['model' => $model]);
     }
 }