#17485: Queries with both deferred fields and select_related defer field.name
instead of field.attname
-------------------------------------+-------------------------------------
Reporter: koniiiik | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: SVN
(models, ORM) | Resolution:
Severity: Normal | Triage Stage: Accepted
Keywords: defer | Needs documentation: 0
select_related | Patch needs improvement: 0
Has patch: 1 | UI/UX: 0
Needs tests: 0 |
Easy pickings: 0 |
-------------------------------------+-------------------------------------
Changes (by aaugustin):
* needs_better_patch: => 0
* needs_docs: => 0
* needs_tests: => 0
* stage: Unreviewed => Accepted
Comment:
You've clearly demonstrated that this is a bug: Django misbehaves badly in
this situation.
It seems to me that `select_related` is the opposite of `defer`. Is there
a use case for using both on the same field? Maybe it's
`.defer('foo').select_related('foo__bar__baz')`, in order to fetch `foo`,
`bar` and `baz` in one query on the first access to `foo`? (Does that
actually work?)
Anyway, I think we should fix the bug and all affected tests with one
patch.
--
Ticket URL: <https://code.djangoproject.com/ticket/17485#comment:1>
Django <https://code.djangoproject.com/>
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