I am trying to use django rules to configure object permissions in django and the django admin interface.

Now when I add permission rules, they will always only be called with the first param, but the object is always None.

For example I if I would create this predicate:

@rules.predicate
def is_book_author(user, book):
    return book.author == user

And then add it to the django permission set:

rules.add_perm('books.add_book', is_book_author)

Now when I log into the admin interface with a user, then the is_book_author will be called with the user and None. It will be called multiple times (once per object), but the object ist always None.

I am using rules 2.0.0 with django 2.1.1 and python 3.7.

Any ideas if I'm doing something wrong or how to configure django to call the predicate with the individual object?

I am trying to use django rules to configure object permissions in django and the django admin interface.

Now when I add permission rules, they will always only be called with the first param, but the object is always None.

For example I if I would create this predicate:

@rules.predicate
def is_book_author(user, book):
    return book.author == user

And then add it to the django permission set:

rules.add_perm('books.view_book', is_book_author)

Now when I log into the admin interface with a user, then the is_book_author will be called with the user and None. It will be called multiple times (once per object), but the object ist always None.

I am using rules 2.0.0 with django 2.1.1 and python 3.7.

Any ideas if I'm doing something wrong or how to configure django to call the predicate with the individual object?