On the plane from London to Chicago yesterday, I implemented something
that's been discussed on this list lately -- "reverse" URL creation.

I've attached a new urlresolvers.py to this e-mail. It's intended to
replace the one in django/core, and it works with magic-removal only.
(To use it with trunk, just replace the import line at the top to
import Http404 from django.core.exceptions instead of django.http.)
I've also attached unit tests.

Given a view name (e.g. 'myproject.polls.views.poll_detail', as a
string) and any number of positional or keyword arguments, this code
generates the URL according to the first URL pattern in your URLconf
that matches.

The method is reverse() on both the RegexURLPattern and
RegexURLResolver classes.

Here's an example of how it works. Given this root URLconf:

urlpatterns = patterns('',
    (r'^foo/$', 'path.to.foo_view'),
    (r'^dates/(\d{4})/(\w{3})/$', 'path.to.month_view'),
    (r'^people/(?P<state>\w\w)/(?P<name>\w+)/$', 'path.to.person_view'),
)

Here's how to use it:

--
Adrian Holovaty
holovaty.com | djangoproject.com

urlresolvers.py 7K Download

reverse_unit_tests.py 2K Download