#31973: TypeError loading data in JSONField if DB has native JSON support
-------------------------------------+-------------------------------------
Reporter: Adam Alton | Owner: nobody
Type: Bug | Status: closed
Component: Database layer | Version: 3.1
(models, ORM) |
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
-------------------------------------+-------------------------------------
Comment (by giacomo):
Replying to [comment:20 Mariusz Felisiak]:
> Do you really want to get `JSON` as a result of `JSONB_ARRAY_LENGTH()`?
I think you missed `output_field`, e.g.
> {{{
> MyModel.objects.annotate(field_len=Func(F('field'),
function='jsonb_array_length', output_field=IntegerField()))
> }}}
> works fine.
Thanks, I missed that part of the `Func` documentation and I was also
confused because it stopped working in a minor version. The documentation
could be improved, though: `output_field` is not included in the class
attributes and is only mentioned at the end without an example...
--
Ticket URL: <https://code.djangoproject.com/ticket/31973#comment:21>
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 view this discussion on the web visit
https://groups.google.com/d/msgid/django-updates/067.c086b6048133521a54d25cae92d19068%40djangoproject.com.
