'Returns a feedgenerator.DefaultFeed object, fully populated, for
this feed. Raises FeedDoesNotExist for invalid parameters.'

def get_feed(self, url=None):

    if url:
        bits = url.split('/')
    else:
        bits = []
    try:
        obj = self.get_object(bits)
    except ObjectDoesNotExist:
        raise FeedDoesNotExist
    return super(Feed, self).get_feed(obj, self.request)
