OctoberCMS后端用户权限与Twig

I'm using OctoberCMS which uses Twig.

The way I retrieve user permissions is by getting the information in php then pass a twig variable.

Is there a way to do this using just Twig?

Permissions Docs

PHP

if (BackendAuth::check()) {
    # Get User Info
    $backend_user = BackendAuth::getUser();

    # Superuser
    $this['is_superuser'] = $backend_user->is_superuser;

    # Permissions
    $this['permissions_allow_edit'] = $backend_user->hasPermission(
    [
        'mycomponent.gallery.allow_edit'
    ]);
}

Twig

{% if is_superuser or permissions_allow_edit %}
    //edit button
{% endif %}

Twig (Standalone)

//another way to backendauth check in twig?
if (BackendAuth::check()) {
    $this['backend_user'] = BackendAuth::getUser(); 
}

//////

{% if backend_user.is_superuser or backend_user.permissions.mycomponent.gallery.allow_edit %}
    //edit button
{% endif %}

{{ backend_user }} gives the user information array

{"id":2,"first_name":"Matt","last_name":"","login":"matt","email":"user@example.com","permissions":{"mycomponent.gallery.allow_edit":1},"is_activated":false,"activated_at":null,"last_login":"2017-03-11 09:59:48","created_at":"2017-02-11 10:32:14","updated_at":"2017-03-11 10:03:45","is_superuser":0}

{{ backend_user.permissions }} throws an "Array to string conversion" error.

{{ backend_user.permissions.mycomponent.gallery.allow_edit }} shows nothing.

How do I get the values inside the permissions array?

I have not tested this but you should be able to use the hasPermission method to check if backend user has a specific permission:

{% if backend_user.is_superuser or backend_user.hasPermission('mycomponent.gallery.allow_edit') %}
    //edit button
{% endif %}