backend\controllers\AdminController::actionAdd PHP Method

    public function actionAdd()
    {
        $model = new Admin();
        $model->setScenario('insert');
        $model->load(Yii::$app->request->post());
        if (Yii::$app->request->isAjax) {
            Yii::$app->response->format = Response::FORMAT_JSON;
            return ActiveForm::validate($model);
        }
        if (Yii::$app->request->isPost && $model->validate()) {
            $model->setPassword($model->password);
            $model->generateAuthKey();
            if ($model->save(false)) {
                Yii::$app->session->setFlash('success', '成功添加后台用户“' . $model->username . '”。');
                return $this->redirect(['index']);
            } else {
                Yii::$app->session->setFlash('danger', '添加后台用户失败。');
            }
        }
        return $this->render('form', ['model' => $model]);
    }