haoshengxin/backend/controllers/SiteController.php

<?php
namespace backend\controllers;

use backend\models\AdminUser;
use backend\models\LoginForm;
use Yii;
use yii\base\ErrorException;
use yii\web\Controller;
use yii\filters\VerbFilter;
use yii\filters\AccessControl;
use yii\web\HttpException;

/**
 * Site controller
 */
class SiteController extends Controller
{

   
    /**
     * @inheritdoc
     */
    public function behaviors()
    {
        return [
            'access' => [
                'class' => AccessControl::className(),
                'rules' => [
                    [
                        'actions' => ['login', 'error','init'],
                        'allow' => true,
                    ],
                    [
                        'actions' => ['logout', 'index'],
                        'allow' => true,
                        'roles' => ['@'],
                    ],
                ],
            ],
            'verbs' => [
                'class' => VerbFilter::className(),
                'actions' => [
                    'logout' => ['post'],
                ],
            ],
        ];
    }

    /**
     * @inheritdoc
     */
    public function actions()
    {
        return [
            'error' => [
                'class' => 'yii\web\ErrorAction',
            ],
        ];
    }

    /**
     * Displays homepage.
     *
     * @return string
     */
    public function actionIndex()
    {$this->layout = 'hplus';
        return $this->render('index');
    }

    /**
     * Login action.
     *
     * @return string
     */
    public function actionLogin()
    {
        $this->layout= 'iframe';

        if (!Yii::$app->user->isGuest) {
            return $this->goHome();
        }

        $model = new LoginForm();
        if ($model->load(Yii::$app->request->post()) && $model->login()) {
            return $this->goBack();
        } else {
         if(Yii::$app->request->isPost)
             Yii::$app->getSession()->setFlash('error','账号或密码错误');
            return $this->render('login', [
                'model' => $model,
            ]);
        }
    }

    /**
     * Logout action.
     *
     * @return string
     */
    public function actionLogout()
    {
        Yii::$app->user->logout();

        return $this->goHome();
    }


    /**
     * 初始化后台管理员账号
     */
//    public function actionInit(){
//        $model = AdminUser::find()->one();
//        if(empty($model)){
//            $model = new AdminUser();
//            $model->username  = 'admin';
//            $model->setPassword('admin');
//            $model->generateAuthKey();
//            $model->created_at = time();
//            $model->updated_at = time();
//            if($model->validate()){
//                $model->save();
//            }else{
//                return new HttpException(402,'Initialize account failed ');
//            }
//
//        }else{
//            throw new HttpException(402,'Initialize account failed ');
//        }
//    }
}