#27205: Django Postgres ArrayField __contain lookup does not behave expectedly
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Reporter: Dean-Christian-Armada | Owner: nobody
Type: Uncategorized | Status: new
Component: Database layer (models, ORM) | Version: 1.10
Severity: Normal | Keywords: postgresql,
| arrayfield
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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This is my models.py:
{{{
class Dog(models.Model):
name = models.CharField(max_length=200)
data = JSONField()
def __unicode__(self):
return self.name
}}}
I did this in the django shell:
{{{
Dog.objects.create(name='Rufus', data={ 'breed': 'labrador', 'owner': {
'name': 'Bob', 'other_pets': [{ 'name': 'Fishy', }], }, })
Dog.objects.create(name='Meg', data={'breed': 'collie'})
Dog.objects.filter(data__breed__contains='l')
}}}
However when I did the last command it gave me an empy queryset return:
{{{
<QuerySet []>
}}}
The two objects (Meg and Rufus) should have both returned because they
both contain l
This is the query of the ORM:
{{{
SELECT "post_tagging_dog"."id", "post_tagging_dog"."name",
"post_tagging_dog"."data" FROM "post_tagging_dog" WHERE
"post_tagging_dog"."data" -> 'breed' @> '"l"'
}}}
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Ticket URL: <https://code.djangoproject.com/ticket/27205>
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