#27594: Reverse one to one related object populated from incorrect query columns
-------------------------------------+-------------------------------------
Reporter: Daniel Hillier | Owner: Daniel
| Hillier
Type: Bug | Status: assigned
Component: Database layer | Version: master
(models, ORM) |
Severity: Normal | Resolution:
Keywords: onetoone reverse | Triage Stage:
| Unreviewed
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Changes (by Daniel Hillier):
* owner: daniel.hillier@… => Daniel Hillier
Old description:
> Extracting data for the related object from a queryset with a self
> referential one to one field gets the wrong data (incorrect columns) from
> the query when using a select_related with the reverse field.
>
> The incorrect columns are introduced by the sqlcompiler mistaking the
> reverse select_related path as a part of a multiple concrete model
> inheritance structure.
>
> The proposed fix tests for self-referential relationships and avoids the
> multiple concrete model inheritance path in those instances.
>
> Test added and all other tests are passing.
New description:
Extracting data for the related object from a queryset with a self
referential one to one field gets the wrong data (incorrect columns) from
the query when using a select_related with the reverse field.
The incorrect columns are introduced by the sqlcompiler mistaking the
reverse select_related path as a part of a multiple concrete model
inheritance structure.
--
Comment:
The proposed fix tests for self-referential relationships and avoids the
multiple concrete model inheritance path in those instances.
Test added and all other tests are passing.
https://github.com/danifus/django/tree/ticket_27594
--
Ticket URL: <https://code.djangoproject.com/ticket/27594#comment:1>
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