toastdriven/django-tastypie — pull request #726 by KoFish (2012-11-16 01:52:52+00:00)
Title: Added a possibility to negate filters

By adding a '!' as the first character of a value in a filter it will instead be regarded as an ``exclude``. For example ``host:8000/api/user/?username=!bepa`` will list all ``resource`` that doesn't have the username ``bepa``.