'Role' object has no attribute '__name__'

Question

I am trying to implement role based permission into my application. I have a decorator role_required into which I can pass a set of user roles and only those user with that role can access that view. I have properly assigned roles to the user but, now I am getting AttributeError stating that `'Role' object has no attribute '__name__'` `views.py` file: ``` m_role_required = method_decorator(role_required) class AddProposal(FormView): @m_role_required(roles.space_admin) def dispatch(self, *args, **kwargs): return super(AddProposal, self).dispatch(*args, **kwargs) ``` The decorator `role_required`: ``` from django.contrib.auth.decorators import user_passes_test def role_required(*roles): def check_role(user): return getattr(user, 'role', None) in roles return user_passes_test(check_role) ``` The `Role` class: ``` class Roles(object): _roles_dict = None @property def roles_dict(self): if self._roles_dict is None: self._roles_dict = {} for item in self._config: if isinstance(item, basestri…

Accepted Answer

Have a look at the code for `django.utils.decorators.method_decorator`. The method decorator it returns cannot accept further parameters save for the actual function to decorate. Properties of this function, including its `__name__`, are copied over via `functools.update_wrapper`, in the usual Python fashion. You get this error because you pass a `Role` object instead of a function.

In other words, you need to rewrite your view like this:

```
space_admin_required = method_decorator(role_required(roles.space_admin))
class AddProposal(FormView):

@space_admin_required
    def dispatch(self, *args, **kwargs):
        return super(AddProposal, self).dispatch(*args, **kwargs)
```

'Role' object has no attribute 'name'

Solution

Problem