Problem With Rbac

I try to use group role.

config-main.php




$config['components']['authManager'] = [

    'class' => 'yii\rbac\PhpManager',

    'defaultRoles' => [0, 1, 2, 3],

];



data/rbac.php




<?php

use yii\rbac\Item;


return [

    'items' => [

        'createTopic' => ['type' => Item::TYPE_PERMISSION, 'description' => 'Добавление топика', 'ruleName' => NULL, 'data' => NULL],

        'updateTopic' => ['type' => Item::TYPE_PERMISSION, 'description' => 'Редактирование топика', 'ruleName' => NULL, 'data' => NULL],

        'deleteTopic' => ['type' => Item::TYPE_PERMISSION, 'description' => 'Удаление топика', 'ruleName' => NULL, 'data' => NULL],


        0 => [

            'type' => Item::TYPE_ROLE,

            'description' => 'Пользователь',

            'children' => [

                'createTopic',

            ],

            'ruleName' => 'userGroup',

            'data' => NULL

        ],


        1 => [

            'type' => Item::TYPE_ROLE,

            'description' => 'Редактор',

            'children' => [

                0,

                'updateTopic',

            ],

            'ruleName' => 'userGroup',

            'data' => NULL

        ],


        2 => [

            'type' => Item::TYPE_ROLE,

            'description' => 'Модератор',

            'children' => [

                1,

                'deleteTopic',


            ],

            'ruleName' => 'userGroup',

            'data' => NULL

        ],


        3 => [

            'type' => Item::TYPE_ROLE,

            'description' => 'Администратор',

            'children' => [

                2,

            ],

            'ruleName' => 'userGroup',

            'data' => NULL

        ],

    ],

    'rules' => [

        'userGroup' => 'O:31:"gamesdiscuss\\data\\UserGroupRule":3:{s:4:"name";s:9:"userGroup";s:9:"createdAt";N;s:9:"updatedAt";N;}',

    ],

];



data/UserGroupRule.php




namespace gamesdiscuss\data;


use Yii;

use yii\rbac\Rule;


class UserGroupRule extends Rule

{

    public $name = 'userGroup';


    public function execute($user, $item, $params)

    {

        if ( ! Yii::$app->user->isGuest) {

            return Yii::$app->user->identity->role == $item->name;

        }

        return false;

    }

}



user role id stored in Yii::$app->user->identity->role.

for example. my role = 0 (user)




echo Yii::$app->user->can(Yii::$app->user->identity->id, 'createTopic');



always return false

what i do wrong?