#35434: prefetch_related_objects fails to cache UUID FKs when the string
representation of a UUID is used
-------------------------------------+-------------------------------------
Reporter: Selcuk Ayguney | Owner: Selcuk
| Ayguney
Type: Bug | Status: assigned
Component: Database layer | Version: dev
(models, ORM) |
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Changes (by Jacob Walls):
* owner: nobody => Selcuk Ayguney
* stage: Unreviewed => Accepted
* status: new => assigned
Comment:
I ran into a symptom of this problem recently and didn't get far enough to
diagnose the root cause.
I was prefetching at two levels, so my
[https://github.com/archesproject/arches/blob/3940c46627fb3dedbbe58cb64f892b517d86dc99/arches/app/utils/index_database.py#L220-L224
hack] was to just iterate the objects and reselect the object at the
intermediate level (reintroducing N+1 queries at that level), but at least
allowing me to avoid N+1 queries at the second level.
Thanks for the report.
--
Ticket URL: <https://code.djangoproject.com/ticket/35434#comment:4>
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