#31401: Exclude on M2M with F-function not working
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Reporter: Ron | Owner: nobody
Type: Bug | Status: new
Component: Database | Version: 2.2
layer (models, ORM) |
Severity: Normal | Keywords:
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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I have the following models:
class Activity(models.Model):
user = models.ForeignKey(User, related_name='activities')
project = models.ForeignKey(Project, related_name='activities')
class Project(models.Model):
assignees = models.ManyToManyField(User, related_name='projects')
Now I want to query for all the activities which belog to a user which is
NOT in the projects assignees.
My query:
Activity.objects.exclude(project__assignees=F('user'))
Problem is, I always get this error:
> django.db.utils.OperationalError: (1054, "Unknown column 'U2.id' in 'on
clause'")
Im working on django 2.2.11 and MySQL.
I found a couple of [old django bugs][1] but they are supposed to be fixed
since ages.
Any ideas how I can solve my problem? My activity table is huge and I need
an efficient way. And I'd be happy to not use raw queries.
Thanks!
[1]: https://code.djangoproject.com/ticket/28551
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Ticket URL: <https://code.djangoproject.com/ticket/31401>
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