#26511: Django 1.9 and Postgres 9.4 jsonb string containment inside JSONField
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Reporter: eoinmurray | Owner:
Type: Bug | Status: closed
Component: contrib.postgres | Version: 1.9
Severity: Normal | Resolution: worksforme
Keywords: postgres, jsonb | 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 charettes):
As Claude pointed out the `textfield__contains` and `jsonfield__contains`
lookups do not behave the same.
In order to use the `textfield__contains` operator on `metadata ->
'title'` field you'll have to cast your JSON field to text (just like you
do in your `raw()` query) before hand.
The following should work against the master branch (which introduced the
`Cast` [https://docs.djangoproject.com/en/dev/ref/models/database-
functions/#cast function]):
{{{#!python
from django.db import models
File.objects.annotate(
title=Cast('metadata__title', models.TextField()),
).filter(title__contains='moon')
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/26511#comment:3>
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