#25617: Disallow usernames that differ only in case in UserCreationForm
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Reporter: timgraham | Owner: nobody
Type: Cleanup/optimization | Status: new
Component: contrib.auth | Version: master
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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Most applications don't treat user names as case sensitive. While we can't
treat usernames as case-insensitive everywhere in Django due to backwards
compatibility (#2273), by using `username__iexact` when checking for
uniqueness of new usernames in `UserCreationForm`, we can at least prevent
the creation of new usernames that differ only in case from an existing
one. This protection won't cover creating a user in the shell or through
the `createsuperuser` management command, but I don't think this is
critical.
This wouldn't affect any usernames that already exist, and users will
still need to login with the same case that they register with.
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Ticket URL: <https://code.djangoproject.com/ticket/25617>
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