public function actionProfile()
    {
        $model = UserProfile::findOne(['user_id' => Yii::$app->user->identity->getId()]);
        if (Yii::$app->request->isAjax && $model->load(Yii::$app->request->post())) {
            Yii::$app->response->format = Response::FORMAT_JSON;
            return ActiveForm::validate($model);
        }
        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            Yii::$app->getSession()->setFlash('success', Yii::t('yuncms', 'Your profile has been updated'));
            return $this->refresh();
        }
        return $this->render('profile', [
            'model' => $model,
        ]);
    }