public function actionMobile($step = '1')
 {
     $params = ['step' => $step];
     if ($step === '1') {
         $verifyPasswordForm = new VerifyPasswordForm();
         if ($verifyPasswordForm->load(Yii::$app->request->post()) && $verifyPasswordForm->validate()) {
             Yii::$app->session['passwordVerified'] = true;
             return $this->redirect(['mobile', 'step' => '2']);
         }
         $params['verifyPasswordForm'] = $verifyPasswordForm;
     } elseif ($step === '2' && Yii::$app->session->has('passwordVerified') && Yii::$app->session['passwordVerified']) {
         $changeMobileForm = new ChangeMobileForm();
         $changeMobileForm->load(Yii::$app->request->post());
         if (Yii::$app->request->isAjax) {
             Yii::$app->response->format = Response::FORMAT_JSON;
             return ActiveForm::validate($changeMobileForm);
         }
         if (Yii::$app->request->isPost && $changeMobileForm->change()) {
             Yii::$app->session->setFlash('success', '手机更换成功!');
             return $this->redirect(['mobile']);
         }
         $params['changeMobileForm'] = $changeMobileForm;
     } else {
         return $this->redirect(['mobile']);
     }
     return $this->render('mobile', $params);
 }
 /**
  * 更换手机号
  * 
  * @return array
  */
 public function actionMobile($step = '1')
 {
     if ($step === '1') {
         $model = new ChangeMobileSendRequestForm();
         if ($model->load(Yii::$app->request->post(), '') && $model->sendMsg()) {
             return ['status' => 'success', 'data' => []];
         } else {
             return ['status' => 'fail', 'data' => ['errors' => $model->getErrors('mobile') ?: [Yii::$app->smser->message]]];
         }
     } elseif ($step === '2') {
         $model = new ChangeMobileForm();
         $model->mobile = Yii::$app->session['mobileChange'];
         // TODO
         if ($model->load(Yii::$app->request->post(), '') && $model->change()) {
             return ['status' => 'success', 'data' => ['mobile' => Yii::$app->user->identity->mobile]];
         } else {
             return ['status' => 'fail', 'data' => ['errors' => $model->getErrors()]];
         }
     } else {
         throw new BadRequestHttpException('参数错误!');
     }
 }