#8467: For ManyToMany manager, we should convert objects being added or removed
to
the pk type if they are not.
-------------------------------------+-------------------------------------
Reporter: Wonlay | Owner: nobody
Type: New feature | Status: new
Component: Database layer | Version: master
(models, ORM) |
Severity: Normal | Resolution:
Keywords: Duplicate entry, | Triage Stage: Accepted
add, remove, ManyToManyField |
Has patch: 1 | Needs documentation: 0
Needs tests: 1 | Patch needs improvement: 1
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Comment (by Simon Charette):
A regression test for the above optimization could be to
`assertNumQueries(1)` on the `b.a.add(str(pk))` call when a `m2m_changed`
signal is registered for the relationship. That is to disable the ''fast''
insertion mechanism that is enabled on all backends except for Oracle.
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Ticket URL: <https://code.djangoproject.com/ticket/8467#comment:15>
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