'Return whether I am a world-readable forum.
If a django-authority permission relates to me, I am considered non-
public. (We assume that you attached a permission to me in order to
assign it to some users or groups.) Considered adding a Public flag to
this model, but we didn\'t want it to show up on form and thus be
accidentally flippable by readers of the Admin forum, who are all
privileged enough to do so.'

def _allows_public_viewing(self):

    return (not perm_is_defined_on('forums_forum.view_in_forum', self))
