#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 -------------------------------------+------------------------------------- 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... }}} -- -- Ticket URL: <https://code.djangoproject.com/ticket/32414#comment:1> Django <https://code.djangoproject.com/> The Web framework for perfectionists with deadlines. -- You received this message because you are subscribed to the Google Groups "Django updates" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-updates+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-updates/065.05ed0bda220e636e2a0d4bfa9a6937d0%40djangoproject.com.