Menu not active

[truongthaison]

Example, I has routers list:

- admin.article
- admin.article.list
- admin.article.view

And my menus list:

$menu->dropdown(trans('Article'), function ($sub) {
    $sub->route('admin.article.list', trans('List'), [], 1, []);
}, 2, []);

When i vitsited to router:admin.article.view, menu Article do not add class "active".