django.forms.fields.URLField rejects valid URLs with no abs_path component

[wam]

As annoying as it is, RFC 2616 section 3.2.2 (​http://www.rfc2616.com/#3.2.2) allows the abs_path component (the pathname following the optional port number) to be optional in an HTTP URL (it implicitly becomes '/', and is required to treated as '/' for sake of comparisons as well as for request processing). However, the definition of django.forms.fields.url_re requires the character following the optional port number to be a /. The regex also allows the URL to just end after the port with no abs_path, but it currently rejects URLs like:

http://example.com?some_param=some_value

Additionally, the clean() method tacks on a trailing slash to URLs that don't have a pathname.

Attached to this ticket will be a patch to django/forms/fields.py which properly handles URLs like the one listed above by normalizing it to the version that is suitable for URI comparison (see ​http://www.rfc2616.com/#3.2.3). The patch will also provide an additional testcase to tests/regressiontests/forms/fields.py which includes the URL above along with it's expected normalization.

[wam]

Patch to url_re to allow URLs with no abs_name component, plus testcase

[Honza Král]

Fixed on model-validation branch in [11525]

[Honza Král]

With model-validation merged, this is fixed in [12098]