public function actionUpdate()
 {
     $params = $this->getParams();
     $accountId = $this->getAccountId();
     Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;
     if (empty($params['activity']['_id'])) {
         throw new BadRequestHttpException('activityId params missing');
     }
     //Existing activity has been onshelve, can't change status to onshelve.
     $bar = ActivityBar::findOne(['status' => 'Y', 'isDeleted' => false, 'accountId' => $accountId]);
     if (!empty($bar) && (string) $bar['_id'] != $params['activity']['_id'] && $params['activity']['status'] == 'Y') {
         return ['code' => 1000];
     }
     if ($params['activity']['_id'] != 'create') {
         $mongoId = ActivityBar::updateBar($params['activity']);
         $isTrue = ActivityPrize::updatePrize($params['prizes'], $mongoId);
         if (!$isTrue) {
             return ['code' => 500, 'activityId' => $mongoId];
         }
     }
     return ['code' => 200];
 }