在Django中取消注册第三方ModelAdmin会导致NotRegistered错误

Question

I want to completely hide a model from a third-party module ( otherapp ) in admin site.

I put admin.site.unregister(ModelToHide) in one of my apps' admin ( myapp ), but it causes NotRegistered error on every page. The problem is that myapp.admin is loaded before otherapp.admin .

I tried to change the order INSTALLED_APPS so that otherapp comes before myapp , but it did not help, Django loads them in reverse order. I read in one of the SO comments that order of INSTALLED_APPS does not matter, as per Django book.

Actually, I created this question just to share the way I made it work for me, because it took some time to figure out the solution. Hope this helps someone.

Answer 1

There are two options:

1. Put admin.site.unregister(ModelToHide) just after admin.autodiscover() in urls.py so that it runs after all models have been registered.
2. Add an import to myapp.admin : import otherapp.admin so that it's loaded first.

Inspired by 1 and 2 .