#31973: TypeError loading data in JSONField if DB has native JSON support
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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
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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>
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