django/django — pull request #576 by crodjer (2012-12-07 09:12:04+00:00)
Title: More powerful Inline Admin `extra` parameter (#19425)

Right now, the number of extra inline forms in inline admins is
not that flexible. It should be possible to define a method
which can decide the number based on the context.

Issue in question: https://code.djangoproject.com/ticket/19425