Is it possible to access a method decorator's information in Python?

Question

I've designed a RBAC method in a Django project using the following concept:

• Declare an attribute permission_roles in the View/Viewset body
• This attribute receives information regarding the user roles that can access each method/action of the view (e.g.: 'create': (RoleChoices.ADMIN))

Then I had to think how to inform the frontend about role capabilities.

I've thought of using a new model class Permission that stores an array of roles and have an unique name identifier (e.g.: Permission(action="user_management_list", roles=[1,2,3]))

In order to populate this model, I've used the autodiscover Django's method + a decorator that goes above my view methods/actions:

    @allowed_roles('user_management_list', [RoleChoices.ADMIN])
    def list(self, request, *args, **kwargs):
        return super().list(request, *args, **kwargs)

Now I was thinking of a way to merge both functionalities, simplifying the RBAC custom permission by using the action name + the request user role and query directly to the DB (later I'll use also a cache strategy to reduce DB load).

But the problem is, how could I access the decorator's first param (its the action name)?