#24004: Can't use only() with latest() if x is in only() and get_latest_by
-------------------------------------+-------------------------------------
Reporter: knyghty | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 1.7
(models, ORM) | Resolution:
Severity: Normal | Triage Stage:
Keywords: | Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Description changed by knyghty:
Old description:
> {{{
> model Page(models.Model):
> ...
> last_modified = models.Datefield()
>
> class Meta:
> get_latest_by = 'last_modified'
> }}}
>
> Suppose I want to get the date of the last modification, I might do
> something like this:
>
> {{{ Page.objects.only('last_modified').latest() }}}
>
> But on trying it, we seem to get stuck copying something until we reach
> maximum recursion depth.
>
> I don't know if this is a bug or if it's simply not going to work, but if
> it's the latter, I think it could be documented somewhere.
New description:
{{{
model Page(models.Model):
...
last_modified = models.DateField()
class Meta:
get_latest_by = 'last_modified'
}}}
Suppose I want to get the date of the last modification, I might do
something like this:
{{{ Page.objects.only('last_modified').latest() }}}
But on trying it, we seem to get stuck copying something until we reach
maximum recursion depth.
I don't know if this is a bug or if it's simply not going to work, but if
it's the latter, I think it could be documented somewhere.
--
--
Ticket URL: <https://code.djangoproject.com/ticket/24004#comment:2>
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