id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
11154	Inconsistency with permissions for proxy models	Dave Hall	Arthur Rio	"'''Summary:''' The content type framework treats proxy models and their parent as the same model.  The permissions framework treats them as separate models.

This is complicated, and best explained by example.  First of all, create this model:

{{{
#!python
class UserProxy(User):
    class Meta:
        proxy = True
        app_label = ""foo""
}}}

This will result in three new permission objects being created:  ""auth.add_userproxy"", ""auth.change_userproxy"", ""auth.delete_userproxy""

However, when the admin site checks for permissions for this model, it will be looking for permissions called:  ""foo.add_userproxy"", ""foo.change_userproxy"", ""foo.delete_userproxy""

The inconsistency lies in that permissions are '''created''' using the '''ContentType''' of the proxy model's parent class.  However, permissions are '''checked''' using the '''app_label''' of the proxy model itself.

In order to reconcile this, there appear to be two options:

  - Allow each proxy model to have it's own ContentType.
  - Make ProxyModel._meta.app_label return the app label of the parent model.

Personally, it makes sense to me that each proxy model has its own ContentType.  Since proxy models can represent subsets of the parent model, they require different admin permissions.  In order to have different admin permissions, they need to have their own content types.

The current situation is a horrible mess of both approaches.  The content type framework treats proxy models as being the same as their parent model.  The permissions framework treats them as different.

I realise that this is something of a design decision for the framework.  I leave it up to greater minds than mine to come up with a solution!"	Bug	closed	contrib.auth	dev	Normal	fixed	proxy contenttype permission	omat@… david@… walter+django@… Simon Meers Jari Pennanen Dave Hall thepapermen kmike84@… danny.adair@… omer.drow@… German M. Bravo danols@… saxix.rome@… 4glitch@… maa@… kegan@… hv@… Arthur Rio	Accepted	1	0	0	1	0	0