#24986: Selecting distinct on lower() function throws AttributeError("'Func' object has no attribute 'column'") -------------------------------------+------------------------------------- Reporter: wbar | Owner: nobody Type: Bug | Status: new Component: Database layer | Version: master (models, ORM) | Severity: Normal | Resolution: Keywords: F(), ORM, distinct | Triage Stage: Accepted Has patch: 0 | Needs documentation: 0 Needs tests: 0 | Patch needs improvement: 0 Easy pickings: 0 | UI/UX: 0 -------------------------------------+------------------------------------- Changes (by jarshwah):
* version: 1.8 => master * severity: Release blocker => Normal * stage: Unreviewed => Accepted Comment: {{{ Author.objects.annotate( name_lower=Func(F('name'), function='lower') ).distinct('name_lower') }}} I don't think we implemented Expression support for `distinct()`. Accepting on that basis - it shouldn't (famous last words..) be too difficult to implement. > but when i write: {{{ Author.objects.annotate( name_lower=Func(F('name'), function='lower') ).distinct('something') }}} I've removed release blocker and 1.8 target, as this is a new feature not previously available. It should be able to go into 1.9 provided there's a patch, but I'm not sure that we'd backport a fix to 1.8. I don't know why you'd think that'd work, especially since the error tells you that "something" isn't actually a field on the model. Am I missing something here? -- Ticket URL: <https://code.djangoproject.com/ticket/24986#comment:3> Django <https://code.djangoproject.com/> The Web framework for perfectionists with deadlines. -- You received this message because you are subscribed to the Google Groups "Django updates" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-updates+unsubscr...@googlegroups.com. To post to this group, send email to django-updates@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-updates/062.53e303b59b2f2a9ff6c2e7803684ee4d%40djangoproject.com. For more options, visit https://groups.google.com/d/optout.