Fully decoupled URLconf's for apps.

[sa@…]

In part 3 of the tutorial you introduce a way to decouple the URLconfs.
But unless I'm missing something there's still one thing left that is tied to the project, namely the prefix passed to the patterns() function.

urlpatterns = patterns('myproject.apps.polls.views.polls',
    (r'^$', 'index'),
    (r'^(?P<poll_id>\d+)/$', 'detail'),
    (r'^(?P<poll_id>\d+)/results/$', 'results'),
    (r'^(?P<poll_id>\d+)/vote/$', 'vote'),
)

The attached patch eliminates the need to pass in the prefix and let's the patterns() function figure that out by itself. Pass None instead of the prefix to trigger the "figure-out-the-prefix-by-yourself" functionality.

urlpatterns = patterns(None,
    ...
)

Hope that's usefull for someone.

cheers

[sa@…]

Cleaner impl that also works with generic views.

[sa@…]

Usage of v2:

With standard views:

urlpatterns = patterns(prefix('views.polls'),
    (r'^$', 'index'),
    (r'^(?P<poll_id>\d+)/$', 'detail'),
    (r'^(?P<poll_id>\d+)/results/$', 'results'),
    (r'^(?P<poll_id>\d+)/vote/$', 'vote'),
)

With generic views:

urlpatterns = patterns('',
    (r'^$', 'django.views.generic.list_detail.object_list', info_dict),
    (r'^(?P<object_id>\d+)/$', 'django.views.generic.list_detail.object_detail', info_dict),
    (r'^(?P<object_id>\d+)/results/$', 'django.views.generic.list_detail.object_detail', dict(info_dict, template_name='polls/results')),
    (r'^(?P<poll_id>\d+)/vote/$', prefix('views.polls.vote')),
)

[hugo]

Maybe "prefix" could be "module_prefix"? Because if we get something like #672 in, there will be two different prefixes in the urlconf and it would be nice to be able to distinguis then :-)

Another idea could be to start auto-detect-prefixes with a ".". That would make your samples this:

urlpatterns = patterns('.views.polls',
    (r'^$', 'index'),
    (r'^(?P<poll_id>\d+)/$', 'detail'),
    (r'^(?P<poll_id>\d+)/results/$', 'results'),
    (r'^(?P<poll_id>\d+)/vote/$', 'vote'),
)

urlpatterns = patterns('',
    (r'^$', 'django.views.generic.list_detail.object_list', info_dict),
    (r'^(?P<object_id>\d+)/$', 'django.views.generic.list_detail.object_detail', info_dict),
    (r'^(?P<object_id>\d+)/results/$', 'django.views.generic.list_detail.object_detail', dict(info_dict, template_name='polls/results')),
    (r'^(?P<poll_id>\d+)/vote/$', '.polls.vote'),
)}}}

A starting dot would make the urlmatchers add the application module prefix to the name.

[hugo]

see also #66

[Adrian Holovaty]

A bit too magic for my tastes -- but feel free to use it yourself, of course.