#34413: Variant of Prefetch but for the earliest/latest related object
-------------------------------------+-------------------------------------
Reporter: Willem Van Onsem | Owner: nobody
Type: New feature | Status: closed
Component: Database layer | Version: dev
(models, ORM) |
Severity: Normal | Resolution: duplicate
Keywords: | Triage Stage:
| Unreviewed
Has patch: 1 | Needs documentation: 0
Needs tests: 1 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by Gordon Wrigley):
I would like to do singular prefetches, which seems kinda like what this
is asking for.
With regard to:
{{{#!python
User.objects.prefetch_related(
Prefetch("groups", queryset=Group.objects.order_by('name')[:1],
to_attr="first_group")
)
}}}
The downside of this is "first_group" is actually a 1 element list. I was
imagining maybe it could be just the item when there is a single item
slice, or failing that a "flat=True" option on Prefetch.
--
Ticket URL: <https://code.djangoproject.com/ticket/34413#comment:10>
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