django: using url parameters and url namespacing simultaneously

Question

I have a namespaced URL...

 url(r'^(?P<page_lang>\w+)/forum/', include('djangobb_forum.urls', namespace='djangobb')),

which then goes through to another urls.py in an app...

url(r'^$', forum_views.index, name='index'),

but I am getting an error when it tries to reverse lookup by the namespace.

<a href="{% url 'djangobb:forum_posts_feed' %}">

I cannot see what is causing this, and I tried to use this fix...

django url parameters before include url with namespace

but I had no luck, any ideas?

EDIT:

I have verfied that it is being cause by the parameter being passed along with the namespace, because I replaced it with something static and the problem went away, how can I make this work?

EDIT2:

error:

Reverse for 'forum_posts_feed' with arguments '()' and keyword arguments '{}' not found. 1 pattern(s) tried: [u'(?P<page_lang>\\w+)/forum/feeds/posts/$']

if i try to add "page_lang" to the url template tag, the error changes to this...

Reverse for 'forum_posts_feed' with arguments '(<SiteLanguage: SiteLanguage object>,)' and keyword arguments '{}' not found. 1 pattern(s) tried: [u'(?P<page_lang>\\w+)/forum/feeds/posts/$']

You don't pass parameter to your url, It's impossible to resolve it — pythad
– pythad, Commented Jan 11, 2016 at 7:35

Daniel Roseman · Accepted Answer · 2016-01-11 08:16:19Z

1

It seems odd that you can't see what's causing this, since you obviously know it's to do with the parameter. Where do you think that value is going to come from? You need to pass it in your url tag:

<a href='{% url "myname:index" parameter=value %}'>

answered Jan 11, 2016 at 8:16

Daniel Roseman

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8 Comments

Joff Over a year ago

but why wouldn't that parameter be passed through the urls, like it is everywhere else? when i try to do this I get the same failure

Daniel Roseman Over a year ago

Er, what? I don't understand your comment at all. The parameter is passed to your view, like any other parameter; it's up to you to actually do something with it.

Joff Over a year ago

what I meant is that the parameter should be captured from the url, right? those parameters are captured from the url regex and the passed into the view. I think I meant to say captured instead of passed. Does that make more sense?

Daniel Roseman Over a year ago

No, it doesn't. It is captured. It goes into your view as a parameter. What makes you think that's not happening?

Joff Over a year ago

I don't think it doesn't. I think I just misspoke and made it unclear. Even when I pass the argument in my url (parameter=value) I still get a Reverse lookup not found. What can I do to make my problem clearer?

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