#27536: order_by('pk') is not obeyed if superclass has default ordering
-------------------------------------+-------------------------------------
Reporter: Andrew Dodd | Owner: nobody
Type: Bug | Status: closed
Component: Database layer | Version: 1.10
(models, ORM) |
Severity: Normal | Resolution: duplicate
Keywords: order_by ordering | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Changes (by Simon Charette):
* status: new => closed
* resolution: => duplicate
Comment:
Hi Andrew,
Thanks for your detailed report.
While confusing ordering by a foreign key relies on the referenced model
`_meta.ordering` if defined. In the case of MTI a `OneToOneField` to the
parent is used as a primary key which makes ordering by `pk` follows the
`pk` -> `parent_ptr` -> `Parent._meta.ordering` chain.
See #26195 resolution for more details.
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Ticket URL: <https://code.djangoproject.com/ticket/27536#comment:2>
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