#22757: prefetch_related isn't as effecient as it could be with
GenericForeignKey
and proxy models
-------------------------------------+-------------------------------------
Reporter: gwahl@… | Owner: (none)
Type: | Status: new
Cleanup/optimization |
Component: Database layer | Version: dev
(models, ORM) |
Severity: Normal | Resolution:
Keywords: prefetch_related | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Changes (by Simon Charette):
* owner: Paulo => (none)
* status: assigned => new
Comment:
This is achievable by grouping queries by concrete model in
`GenericForeignKey.get_prefetch_queryset` but will also likely require
adjusting the prefetching logic to allow for some custom logic to be run
on assignment so returned `Child` instances can be turned into
`ProxiedChild`.
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Ticket URL: <https://code.djangoproject.com/ticket/22757#comment:3>
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