public function actionAddfollower()
 {
     if (Yii::$app->request->isAjax) {
         $return_message = -1;
         $data = Yii::$app->request->post();
         $followed_id = $data['followed_id'];
         $follow_status = $data['follow_status'];
         if ($follow_status == 'Follow') {
             $follow = new FollowerUsertoUser();
             $follow->followed_user_id = $followed_id;
             $follow->follower_user_id = \Yii::$app->user->identity->getId();
             if ($follow->save()) {
                 $return_message = 0;
             }
         } else {
             $follow_record = FollowerUsertoUser::findOne(['followed_user_id' => $followed_id, 'follower_user_id' => \Yii::$app->user->identity->getId()]);
             if ($follow_record->delete()) {
                 $return_message = 1;
             }
         }
         return $return_message;
     }
 }