#27065: Deferred fields not passed to inherited models' __class__.__dict__
----------------------------------------------+----------------------------
Reporter: jarekwg | Owner: nobody
Type: Bug | Status: new
Component: Database layer (models, ORM) | Version: 1.10
Severity: Normal | Keywords: defer
| inherited
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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Possibly a regression, possibly me misunderstanding how this should now
work in 1.10.
{{{
class A(models.Model):
name = models.CharField(max_length=20)
addy = models.CharField(max_length=200)
class B(A):
name2 = models.CharField(max_length=20)
}}}
Calling:
{{{
b = B.objects.only('name').first()
}}}
we expect `name2` and `addy` to get deferred. Calling
`b.get_deferred_fields()`, we get both these field names returned as
expected.
However, inspecting `b.__class__.__dict__`, we see that only the
`DeferredAttribute` for `name2` is available. To get the one for `addy`,
we need to consult `b`'s parent. This was not the case in 1.9.
See my [https://github.com/carljm/django-model-utils/pull/233 PR] to
django-model-utils for context.
--
Ticket URL: <https://code.djangoproject.com/ticket/27065>
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