How to add on beforeRequest to Yii2 config?

Question

Yii

Hello! available:

Class CmsApplication extends Application
{
    public function __construct($config=null){
        parent::__construct($config);
    }

how to add this to config:

'on beforeRequest' => function () {
                    Yii::$app->catchAll = [
                        'site/default/index',
                        'message' => 'сайт не доступен'
                    ];
                }

Thanks in advance

Answer 1

[
'modules'=>[],
'components'=>[],
'on beforeRequest' => function () {
                    Yii::$app->catchAll = [
                        'site/default/index',
                        'message' => 'сайт не доступен'
                    ];
                },
'params'=>[]
]