#32414: Syntax Error when combining __in and F() in filter
-------------------------------------+-------------------------------------
Reporter: dfrank8 | Owner: nobody
Type: Uncategorized | Status: new
Component: Database layer | Version: 3.1
(models, ORM) |
Severity: Normal | Resolution:
Keywords: F() | Triage Stage:
| 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 dfrank8:
Old description:
> Similar to https://code.djangoproject.com/ticket/32151
>
> I have a simple Google Calendar Events application. Profiles generate
> calendar tokens with GSuite Oauth (not shown) that are used to make
> CalendarEvents in my database (postgres:9.6). CalendarEvents queried via
> a particular CalendarToken have the token's profile on the model. See
> oversimplified example below:
>
> {{{
> class Profile(models.Model):
> name = models.CharField(max_length=32)
>
> class CalendarEvent(models.Model):
> profile = models.ForeignKey(Profile, on_delete=models.CASCADE)
> attendees = models.ManyToManyField(Profile, on_delete=models.CASCADE)
> }}}
>
> I'm trying to annotate whether a profile is "attending" the event, by
> checking if the profile is in the attendees ManyToMany:
> {{{
> CalendarEvent.objects.annotate(
> is_attending=Case(
> When(
> profile__in=F('attendees'),
> then=Value(True)
> ),
> default=Value(False),
> output_field=models.BooleanField()
> )
> )
> }}}
>
> Generates an invalid syntax error (replacing db name with'' {APP}''):
> {{{
> ProgrammingError: syntax error at or near
> ""{APP}_calendarevent_attendees""
> LINE 1: ...CASE WHEN ("{APP}_calendarevent"."profile_id" IN "{APP}_ca...
> }}}
New description:
Similar to https://code.djangoproject.com/ticket/32151
I have a simple Google Calendar Events application. Profiles generate
calendar tokens with GSuite Oauth (not shown) that are used to make
CalendarEvents in my database (postgres:9.6). CalendarEvents queried via a
particular CalendarToken have the token's profile on the model. See
oversimplified example below:
{{{
class Profile(models.Model):
name = models.CharField(max_length=32)
class CalendarEvent(models.Model):
profile = models.ForeignKey(Profile, on_delete=models.CASCADE)
attendees = models.ManyToManyField(Profile, blank=True,
related_name="attending_calendar_events")
}}}
I'm trying to annotate whether a profile is "attending" the event, by
checking if the profile is in the attendees ManyToMany:
{{{
CalendarEvent.objects.annotate(
is_attending=Case(
When(
profile__in=F('attendees'),
then=Value(True)
),
default=Value(False),
output_field=models.BooleanField()
)
)
}}}
Generates an invalid syntax error (replacing db name with'' {APP}''):
{{{
ProgrammingError: syntax error at or near
""{APP}_calendarevent_attendees""
LINE 1: ...CASE WHEN ("{APP}_calendarevent"."profile_id" IN "{APP}_ca...
}}}
--
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Ticket URL: <https://code.djangoproject.com/ticket/32414#comment:1>
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