fusionbox/django-fusionbox — pull request #36 by gavinwahl (2012-06-14 20:06:31+00:00)
Title: SingletonAdmin, for models that should have 1 instance

Admin class for 'singleton' models, that should only have one instance
across the site, like a single homepage video.

Allows adding objects only when there are none existing. After that it only
allows changing. Never allows deletion.