module.php

<?php

namespace app\backend;

use yii\filters\AccessControl;
use Yii;

class module extends \yii\base\Module
{
    public $controllerNamespace = 'app\backend\controllers';
    public $layout = 'main';
    public function behaviors()
    {
        return [
            'access' => [
                'class' => AccessControl::className(),
                'rules' => [
                    [
                        'allow' => true,
                        'actions' => ['login', 'forgot', 'change'],
                        'roles' => ['?'],
                    ],
                    [
                        'allow' => false,
                        'actions' => ['login', 'forgot', 'change'],
                        'roles' => ['@'],
                        'denyCallback' => function($rule, $action){
                                Yii::$app->getResponse()->redirect(
                                    Yii::$app->urlManager->createUrl('backend/default/index')
                                );
                            }
                    ],
                    [
                        'allow' => true,
                        'roles' => ['@'],
                    ],
                    [
                        'allow' => false
                    ]
                ],
            ],
        ];
    }
    public function init()
    {
        parent::init();

    }

}