import usermessages.models as M

def get_count_unreaded_messages(request):
    if not  request.user.is_anonymous():
        return M.Message.objects.filter(owner=request.user,readed=False).count()
    return 0

def unreaded_count(request):
    return {
        'usermessages_unreaded_count':lambda: get_count_unreaded_messages(request)
    }