Strong -1 on overriding user intent on capitalisation, especially for email addresses as the RFC stipulates that the local part of an email address is case sensitive, this is just rarely practiced. There are much better solutions out there (CI[Text|Char]FIeld in Postgres, etc) that enforce case-insensitivity purely for comparison operations which is where you really want it, but without overriding user intent wrt what case the user wants to use in their email or username.
Django could maybe do with easing the process of implementation for case-insensitive fields outside of Postgres. I’m not familiar enough with the other RDBMSs to know how workable that is. But the answer is certainly not discarding user intent. Kye On 13 Dec 2021, 11:32 AM +0800, Arthur Pemberton <pemb...@gmail.com>, wrote: > A setting to convert all usernames to lowercase would be good too -- that's > my preference overall in general. However I haven't yet seen how best that > could/would be accomplished. > > For simpler uses case where I'm just sub-classing AbstractUser and not > customizing the auth backend, I've taken to overriding > UserManager.get_by_natural_key to allow for case-insensitive logins. Though > really, I probably should add a signal handler to force username to lowercase. > > Arthur > > > On Sunday, December 12, 2021 at 11:21:32 AM UTC-5 Uri wrote: > > > Hi Arthur, > > > > > > I would recommend users of Django to use only lowercase usernames. And if > > > they insist that the username is an email address, also convert it to > > > lowercase. Otherwise you can have 3 separate users uri, Uri, and uRI, or > > > 3 separate users with email addresses u...@example.com, u...@example.com, > > > and u...@example.com (or even u...@example.com). Maybe it's better to add > > > an optional setting to enforce usernames to be lowercase. And by the way > > > also alphanumeric. You don't want "!@#" to be a username on your system > > > (or the user's name in Chinese or Hebrew). > > > > > > It's interesting that this ticket is 15 years old and still not > > > completely resolved. > > > > > > By the way, when people type their email address, some programs > > > (including browsers) convert the first letter to uppercase, and I have > > > received email addresses from people with the first letter in uppercase, > > > although their true address is lowercase. I don't think you want this > > > uppercase letter to appear on your database in the email field. > > > > > > אורי > > > (Uri) > > > > > > u...@speedy.net > > > > > > > > > > On Sun, Dec 12, 2021 at 6:02 PM Arthur Pemberton <pem...@gmail.com> > > > > wrote: > > > > > Especially with the ability to set USERNAME_FIELD to "email", it > > > > > would be really useful to at least have a well documented warning > > > > > that usernames are case-sensitive in Django. > > > > > > > > > > I've been using Django for years, and even I forget that fact some > > > > > times. Until I start Googling and come across [1]. > > > > > > > > > > Ideally, it would be great to have a setting (or model field) that > > > > > would allow easy switching to case insensitive usernames. > > > > > > > > > > Arthur Pemberton > > > > > > > > > > ---- > > > > > > > > > > [1] https://code.djangoproject.com/ticket/2273 > > > > > -- > > > > > You received this message because you are subscribed to the Google > > > > > Groups "Django developers (Contributions to Django itself)" group. > > > > > To unsubscribe from this group and stop receiving emails from it, > > > > > send an email to django-develop...@googlegroups.com. > > > > > To view this discussion on the web visit > > > > > https://groups.google.com/d/msgid/django-developers/9a5e1df3-778d-4993-8c32-57870fafd8f9n%40googlegroups.com. > -- > You received this message because you are subscribed to the Google Groups > "Django developers (Contributions to Django itself)" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to django-developers+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/django-developers/c2bb1b2f-e1ac-4770-8989-ebb0fdc47a2cn%40googlegroups.com. -- You received this message because you are subscribed to the Google Groups "Django developers (Contributions to Django itself)" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-developers+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-developers/2b02d741-e49d-486e-b92d-92d0e233b9e9%40Spark.
