#31991: QuerySet.raw() method returns string instead of dict for JSONField().
-------------------------------------+-------------------------------------
Reporter: horpto | Owner: nobody
Type: Bug | Status: closed
Component: Database layer | Version: 3.1
(models, ORM) |
Severity: Normal | Resolution: wontfix
Keywords: JSONfield | 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 Ruben Nielsen):
Hello,
Chiming in here, as this is something that breaks a lot of functionality
in our app when loading. I'm seeing this particular piece of the code as
my problem:
{{{
# Register dummy loads() to avoid a round trip from psycopg2's
decode
# to json.dumps() to json.loads(), when using a custom decoder in
# JSONField.
psycopg2.extras.register_default_jsonb(conn_or_curs=connection,
loads=lambda x: x)
}}}
(django.db.backends.postgresql.base.py::DatabaseWrapper.get_new_connection)
I sort-of understand the reasoning behind this change, but I'm not sure
how to get around it, if I just want the original functionality for my
project, which only uses Postgres anyway. The comment says "when using a
custom decoder", so shouldn't you check for this? If I use one, then fine,
but if I don't then stop breaking psycopg2 for me... Or could this be
controlled from settings.py? I know there are tonnes of settings already,
but it would certainly help.
Or another path. How do I set a custom decoder for all my JSONFields?
Earlier, everything was simply `json.loads` by default, so that was all
good. I know how to make a custom field with a custom decoder, sure, but
how would I then tie that into `queryset.raw()`?
--
Ticket URL: <https://code.djangoproject.com/ticket/31991#comment:4>
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