Flatpage's get_absolute_url Throws a Regex Tantrum

[Jason Cameron]

FlatPages' get_absolute_url is encountering a regex error, affecting both the "view on site" feature and the django.contrib.flatpages.sitemaps.FlatPageSitemap. The following error is observed:

Exception Value: redefinition of group name 'url' as group 2; was group 1 at position 17

This issue stems from the following line (L46) in django\contrib\flatpages\models.py:

return reverse(flatpage, kwargs={"url": url})

Replacing this line with the following seemingly resolves the issue:

return reverse(flatpage, args=(url,))

[Jason Cameron]

Here is a full traceback of it. ​https://project-metropolis.sentry.io/share/issue/4ee5940a0f6646d38732140ee87ba6c6/

[Sarah Boyce]

Hi Jason, I can see inside django.contrib.contenttypes.views.shortcut it calls the get_absolute_url for the FlatPage object. In order to be able to replicate this, I need to know the url of that specific object. Can you find that out and let us know?