Django url not cannot find some UTF-8 usernames-CodePudding

i am experimenting with UTF-8 for usernames in a django app.

Django is Version 3.2.11

Python used is 3.9.4

Some users might have a profile visible to others and ther username in the url:

re_path("^u/(?P<username>\w )/$", views.author_profile_view, name="author_profile_view"),

Normal Example works fine:

Browser shows -> /u/brainyChowder3/
Django shows -> GET /u/brainyChowder3/ HTTP/1.1" 200 10593

UTF-8 example 1 works also fine:

Browser shows -> /u/ɊȁⱲÒđΈⱦİĬd/
Django shows -> GET /u/ɊȁⱲÒđΈⱦİĬd/ HTTP/1.1" 200 12508

But this UTF-8 does not work:

Browser shows -> /u/ɂáⱳ1⁄4|ĭğę
Django shows -> "GET /u/ɂáⱳ1⁄4|ĭğę HTTP/1.1" 404 5585

The browser does show it strange, as he does not "translate" | to |, but that should be just optical?

Error shown is just

Page not found (404)
Request Method: GET
Request URL:    http://127.0.0.1:8000/u/ɂáⱳ1⁄4|ĭğę
The current path, u/ɂáⱳ1⁄4|ĭğę, didn’t match any of these.

In Django shell I can query this user:

>>> User.objects.get(username='ɂáⱳ1⁄4|ĭğę')
<User: ɂáⱳ1⁄4|ĭğę>

The URI decoding looks ok to me.

I hope someone can explain why this is happening to one UTF-8 string, but not the other. Or maybe even knows how to fix it? :-D

I know it may not be the smartes thing to allow all UTF-8 for usernames, but this is more an experiment for me.

Thanks

CodePudding user response：

The reason this happens has nothing to do with UTF-8, but with the fact that the username contains a non-word character (a character not matched by \w): a character that is not allowed for the <str:…> path converter. You can work with a <path:…>:

path('u/<path:username>/', some_view, name='some_name')