permalink breaks when using include() in urls.py

[Ian Lewis]

If you use include() to include urls in another urls.py then include will fail to generate the proper urls for urls in the included urls.py if the urls fall in a sub-path.

In the given urls.py

...
urlpatterns = patterns('',
    (r'', include('core.urls')),
    (r'^blog/(.*)', include('blog.urls')),
)
...

and models.py

...
class Post(models.Model):
    """Post model."""
    title           = models.CharField(_('title'), max_length=200)
    slug            = models.SlugField(_('slug'), unique_for_date='publish')
    author          = models.ForeignKey(User, blank=True, null=True)
    body            = models.TextField(_('body'))
    publish         = models.DateTimeField(_('publish'))
    
    def __unicode__(self):
        return u'%s' % self.title

    @permalink
    def get_absolute_url(self):
        # return '/blog/%s/%s/%s/%s' % (self.publish.year,self.publish.strftime('%b').lower(),self.publish.day,self.slug)
        return ('blog_detail', None, {
            'year': self.publish.year,
            'month': self.publish.strftime('%b').lower(),
            'day': self.publish.day,
            'slug': self.slug
        })
...

using the @permalink decorator will work for core.urls but it would not work for blog.urls. The permalink decorator simply returns an empty string.

[Malcolm Tredinnick]

The only bug here is in the URL pattern you've created. You're capturing everything from blogs/ to the end of the string at the top level, so nothing will be seen by the second-level URLConf. Leave off the (.*) part and you'll find things work a lot better.