The callable list is indeed assigned as the default for the ArrayField, as documented here: https://docs.djangoproject.com/en/4.1/ref/contrib/postgres/fields/#django.contrib.postgres.fields.ArrayField
The original issue has already had a patch merged, which will be released in 4.1.5, see the fix here: https://docs.djangoproject.com/en/dev/releases/4.1.5/ On Sunday, 11 December 2022 at 18:02:24 UTC [email protected] wrote: > Hello Sir, I need to understand the form.py file because , what is the > only list you have assigned as default in arrayfield, is it the method > list() ? > > > On Sat, Dec 10, 2022 at 10:00 PM James Gillard <[email protected]> > wrote: > >> Thanks for the feedback. I opened a ticket and it was indeed confirmed as >> a bug: https://code.djangoproject.com/ticket/34205 >> >> On Thursday, 8 December 2022 at 15:04:40 UTC Ryan Nowakowski wrote: >> >>> Might be a bug. Check the release notes for the post 4.0.8 versions to >>> see if anything related changed. File a bug with the simplest example code >>> that demonstrates the issue. >>> >>> >>> On December 8, 2022 6:37:52 AM CST, James Gillard < >>> [email protected]> wrote: >>>> >>>> I can't yet work out whether this is a Django bug or how I'm using >>>> model constraints... Upgraded from 4.0.8 to 4.1.4 and have hit this issue >>>> when saving this model in the admin. I'd read in the release notes that >>>> these constraints would be validated on model save, and that's the code >>>> that's leading to this exception. If it's not something I've done, it >>>> seems >>>> ArrayField isn't working with this new validation of my condition. The >>>> same >>>> happens for Q(phone_numbers__len__gte=0), and the error disappears if I >>>> comment out this condition. It seems the generated code might be wrong, as >>>> I see 12 "%s" and only 11 elements in params. All it's trying to do is >>>> ensure that an empty list isn't considered unique. >>>> >>>> Here's the failing model: >>>> >>>> phone_numbers = ArrayField(models.CharField(max_length=200), >>>> default=list, blank=True) >>>> >>>> class Meta: >>>> constraints = [ >>>> models.UniqueConstraint( >>>> fields=['phone_numbers'], >>>> condition=~Q(phone_numbers__len=0), >>>> name='unique_email_phones', >>>> ), >>>> ] >>>> ) >>>> >>>> [image: Screenshot 2022-12-08 at 12.30.35.png] >>>> >>>> -- >> You received this message because you are subscribed to the Google Groups >> "Django users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/django-users/4a8a0941-dd65-4c22-bf16-4e11181794a0n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/django-users/4a8a0941-dd65-4c22-bf16-4e11181794a0n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/29d9d224-3027-4346-9552-8fcadedd21dfn%40googlegroups.com.
