#35374: UniqueConstraint (and potentially other constraints) validation is not
run
when using a form generated from `inlineformset_factory`
----------------------------+--------------------------------------
Reporter: David Hang | Owner: nobody
Type: Bug | Status: closed
Component: Forms | Version:
Severity: Normal | Resolution: invalid
Keywords: | Triage Stage: Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
----------------------------+--------------------------------------
Changes (by Natalia Bidart):
* resolution: => invalid
* status: new => closed
* version: 4.1 =>
Comment:
Hello David! Thank you for your report.
Replying to [ticket:35374 David Hang]:
> Due to how refactors in Django 4+ on how the unique validations are run
for models and forms
Could you please provide more concrete information about this affirmation?
The code you linked hasn't changed in 11 years (except for
[https://github.com/django/django/pull/15515 a switch to use sets instead
of lists for the `exclude` variable]) so I'm not sure what refactor in
Django 4+ you are referring to.
The example that you provided is a bit tricky/incomplete, because the data
that is being passed to the formset is incomplete. The data should account
for the current status of the `Big Farm` instance; this is a correct
`data` dict example to be passed to the formset:
{{{
data = {
"apple_set-TOTAL_FORMS": "3",
"apple_set-INITIAL_FORMS": "1",
"apple_set-0-name": "Best Apple",
"apple_set-0-farm": big_farm.pk,
"apple_set-0-id": best_apple.pk,
"apple_set-1-name": "Best Apple",
"apple_set-1-farm": big_farm.pk,
"apple_set-1-id": "",
}
}}}
Then, the expected unique validation is performed. The formset is indeed
not valid and the errors are:
{{{#!python
[{}, {'__all__': ['Please correct the duplicate values below.']}, {}]
}}}
I'll be closing this issue as invalid since it could be that you may be
misunderstanding how formsets works. If you need further assistance, there
are [https://www.djangoproject.com/community/ many user support channels
with an amazing community] that will surely help you.
--
Ticket URL: <https://code.djangoproject.com/ticket/35374#comment:1>
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