Multiple inheritance with Django

Question

I'm using Django for a project, and I want to use a couple of apps that extend the admin by subclassing the admin class.

How can I have them both sublass the admin class?

from django.contrib import admin
from testing.models import *
from reversion.admin import VersionAdmin
from moderation.admin import ModerationAdmin

class ItemAdmin(VersionAdmin):
    pass

admin.site.register(Item, ItemAdmin)

You can't subclass a module. Subclassing is... erm... for classes. Is class ItemAdmin(VersionAdmin, ModerationAdmin) what you want? (I doubt it.) If so, why doesn't it work? — Thomas
– Thomas, Commented Feb 6, 2011 at 18:42

Martin v. Löwis · Accepted Answer · 2011-02-06 18:44:17Z

4

Both VersionAdmin and ModerationAdmin appear to use the "cooperative super" feature of Python. So I'd try to just use multiple inheritance:

class ItemAdmin(VersionAdmin, ModerationAdmin):
    pass

If this fails, you can see whether it works better with the reverse order. If this still fails, you need to study the specific issue, and find out why the cooperative super doesn't work.

answered Feb 6, 2011 at 18:44

Martin v. Löwis

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