#34500: use annotate return feild, Error capture does not work
-------------------------------------+-------------------------------------
Reporter: ajinwu | Owner: ajinwu
Type: Bug | Status: closed
Component: Database layer | Version: 4.2
(models, ORM) |
Severity: Normal | Resolution: duplicate
Keywords: json decode | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 1 | UI/UX: 0
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Changes (by Mariusz Felisiak):
* status: new => closed
* resolution: => duplicate
Comment:
`JSONField.from_db_value()` is a part of Django internals and it works as
expected. `value` returned from a database should be a string. If you want
to use `Func()` which returns a type other than the field you passed in,
you should use the `output_field` argument, e.g.
{{{
Func(F('field'), function='jsonb_array_length',
output_field=IntegerField())
}}}
Duplicate of #31973.
--
Ticket URL: <https://code.djangoproject.com/ticket/34500#comment:6>
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