#25173: Model inheritance and select_related
-------------------------------------+-------------------------------------
Reporter: illing2005 | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 1.8
(models, ORM) |
Severity: Normal | Resolution:
Keywords: ORM, | Triage Stage:
select_related, model inheritance | Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Changes (by shaib):
* needs_better_patch: => 0
* needs_tests: => 0
* needs_docs: => 0
Comment:
Could you please verify the following:
* After
{{{
obj = A.objects.select_related('b', 'field_fk).first()
}}}
You can traverse the FK without incurring another database query;
* You should be able to save the query by explicitly using the "a" object:
{{{
obj = obj.b
print (obj.a_ptr.field_fk)
}}}
but I'd agree that, even if it works, that's a workaround for something
that's worth solving.
--
Ticket URL: <https://code.djangoproject.com/ticket/25173#comment:1>
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