id summary reporter owner description type status component version severity resolution keywords cc stage has_patch needs_docs needs_tests needs_better_patch easy ui_ux 31809 Regex URL patterns with conditional capture break default values in view functions Zoltán Adamek nobody "Hello, When I use a conditional, named capture group in a URL pattern with a view function which has a default value, the default value is not adhered to. For a full example, this minimal Django app below will act like the following: - On visiting /this, it will print ""this"" (as expected). - On visiting /that, it will print ""that"" (as expected). - On visiting / (=not specifying anything), instead of falling back to the default view parameter ""this"", I get None. {{{ import sys from django.conf import settings from django.conf.urls import url from django.core.management import execute_from_command_line from django.http import HttpResponse settings.configure( DEBUG=True, ROOT_URLCONF=__name__, ) def routing_example(request, choices=""this""): return HttpResponse('{text}'.format(text=choice)) urlpatterns = [ url(r'^(?:(?P(this|that)))?$', routing_example), ] if __name__ == '__main__': execute_from_command_line(sys.argv) }}} " Uncategorized closed Core (URLs) 3.0 Normal invalid Unreviewed 0 0 0 0 0 0