public function actionCreate()
 {
     $model = new Business();
     $defalt_number = 'J' . date('ymd', time());
     if ($model->load(\Yii::$app->request->post()) && $model->validate()) {
         $model->admin_id = \Yii::$app->session['userid'];
         $model->registered_time = time();
         if ($model->save()) {
             \Yii::$app->getSession()->setFlash('success', '已登记业务表!^_^');
             $this->redirect(['business-admin/view', 'id' => $model->id]);
         }
         // var_dump($business);exit();
     }
     return $this->render('create', ['model' => $model, 'business_number' => $defalt_number]);
 }