Link from backend to frontend

I want to put a link from the backend to the site/index action of the frontend. I read this article https://github.com/yiisoft/yii2/issues/1578 but it’s not clear to me. Can anyone explain me this in full detail? Thanks.

This is the most important part of the post:

In your backend application config you should add additional ‘UrlManager’ component with different name and configuration equals to the one used at front end application:

return [

'components' => [


    'urlManager' => [


        // here is your backend URL rules


    ],


    'urlManagerFrontEnd' => [


        // here is your Front-end URL rules


    ],





],

];

Then you should invoke following to compose front-end URL:

Yii::$app->urlManagerFrontEnd->createUrl();

I put this but it’s not working:


        'urlManagerFrontEnd' => [

            'class' => 'yii\web\urlManager',

            'baseUrl' => Yii::getAlias('@frontend') . '/frontend/web',

            'enablePrettyUrl' => true,

            'showScriptName' => false,

        ],

When I invoke createURl it doesn’t create a valid URL.