Default authorization backend returns False when queried for object level permissions
|Reported by:||Owned by:||nobody|
|Has patch:||no||Needs documentation:||no|
|Needs tests:||no||Patch needs improvement:||no|
The default auth backend, django.contrib.auth.backends.ModelBackend unconditioally returns False when queried through User.has_perm() if has_perm is passed an object.
I understand that erring on the side of caution is generally sound, but doing it this way forces generic consumers of the auth framework (e.g. Tastypie in my case) to know whether to pass an obj or not depending on the authentication backend chosen. Always passing an obj to has_perm will result in all requests being denied if using the default backend. Not passing it makes it impossible to apply object level permissions even though I've configured a capable authz backend for this.
Ticket #12462 suggests this is intentional, but doesn't give much of a rationale. It seems to me that if you don't want a user to be able to edit all objects of type XXX, don't give them the "app.change_XXX"?
If this isn't considered a bug, can you offer some advice on how to deal with this situation from a generic application like Tastypie? How should it determine when to pass an obj or not?