#23739: django 1.7.1 defer() throws AttributeError when using related_name
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Reporter: farhan85 | Owner: nobody
Type: | Status: closed
Cleanup/optimization |
Component: Database layer | Version: 1.7
(models, ORM) |
Severity: Normal | Resolution: invalid
Keywords: defer related_name | Triage Stage: Accepted
AttributeError RelatedObject rel |
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Changes (by timgraham):
* status: new => closed
* resolution: => invalid
Comment:
The problem seems to be an invalid `select_related()` query. On Django
1.9:
{{{
>>>
ModelA.objects.filter(name='').select_related('model_b').defer('model_b__name')
django.core.exceptions.FieldError: Invalid field name(s) given in
select_related: 'model_b'. Choices are: (none)
}}}
You should be using `prefech_related()` when querying reverse foreign
keys.
--
Ticket URL: <https://code.djangoproject.com/ticket/23739#comment:7>
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