

def user_passes_test(test_func, login_url=None, redirect_field_name=REDIRECT_FIELD_NAME):
    'Replacement for django.contrib.auth.decorators.user_passes_test that\n    returns 403 Forbidden if the user is already logged in.\n    '
    if (not login_url):
        from django.conf import settings
        login_url = settings.LOGIN_URL

    def decorator(view_func):

        @wraps(view_func)
        def wrapper(request, *args, **kwargs):
            if test_func(request.user):
                return view_func(request, *args, **kwargs)
            elif request.user.is_authenticated():
                return HttpResponseForbidden('<h1>Permission denied</h1>')
            else:
                path = ('%s?%s=%s' % (login_url, redirect_field_name, urlquote(request.get_full_path())))
                return HttpResponseRedirect(path)
        return wrapper
    return decorator

dataset/ETHPy150Open mingchen/django-cas-ng/django_cas_ng/decorators.py user_passes_test/original