#30061: annotate boolean from a Q object
-------------------------------------+-------------------------------------
Reporter: Ryan Hiebert | Owner: nobody
Type: New feature | Status: new
Component: Database layer | Version: master
(models, ORM) |
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Comment (by Ryan Hiebert):
Thank you for letting me know that, Simon. That's such a useful feature,
that even if using {{{Q}}} objects directly is rejected for some reason
(though I hope not), it would be very useful to document that it is
possible to use {{{Q}}} objects in an {{{ExpressionWrapper}}}.
For anyone that might come across this issue looking for this feature, the
syntax that currently works and is tested is like this:
{{{#!python
notes = notes.filter(user=self.user).annotate(
is_author=ExpressionWrapper(
Q(author_id=self.request.user.id),
output_field=BooleanField(),
),
)
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/30061#comment:2>
Django <https://code.djangoproject.com/>
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