Django url tag : maximum recursion depth exceeded

I'm struggling around the following problem:

I've two urls files :

The root one :

    urlpatterns = patterns('',
        ...
        (r'^demonstrator/', include('powernest.demonstrator.urls')),
       开发者_如何学运维 ...
    )

and the application one :

    urlpatterns += patterns('demonstrator.views',
        ...
        url(r'^demonstrator/choices/$', 'demo_choices', d_demo_choice, name="demo_choices"),
        ...
    )

The associated view :

    def demo_choices(request, template_name, action):
        ...
        return render_to_response(template_name, datas, context_instance=RequestContext(request))

When I try to call the named url "demo_choices" in a template, thanks to {% url demo_choices %} I get a TemplateSyntaxError exception :

Caught an exception while rendering: maximum recursion depth exceeded while calling a Python object

I have spent much time without figuring it out! please help !

Thank you and sorry for my poor english!

Victor

You are including your app.urls and using += in your app urls.py. This is causing the max recursion depth exceeded errors.

Leave your urls.py as it is and change your app/urls.py to:

urlpatterns = patterns('demonstrator.views',
    ...
    url(r'^choices/$', 'demo_choices', d_demo_choice,  name="demo_choices"),
    ...
)

Note that you don't really need that extra "demonstrator" part in the url regex. Hope that helps.