Is there a way to filter a queryset in the django admin?

Question

I\'m trying to define an action for a model Bar -- but I only want the list of Bar objects related to a user Foo.

Before I start mucking around in the admin code and

Answer 1

It's not documented, but the standard changelist view accepts normal queryset filter parameters as GET arguments. So you can do:

/admin/myapp/bar/?user__username=foo