There are no responses to the same question on stackoverflow, so hopefully someone here can provide a solution. <https://stackoverflow.com/questions/64346385/how-to-make-a-recursive-manytomany-relationship-symmetrical-with-django>
I've read the docs. <https://docs.djangoproject.com/en/3.0/ref/models/fields/#django.db.models.ManyToManyField.symmetrical> I've read this question too, <https://stackoverflow.com/questions/4129439/how-to-make-recursive-manytomanyfield-relationships-that-have-extra-fields-symme> but the following code is not working as the Django docs describe. If bill and ted are friends, bill.friends.all() should include ted, and ted.friends.all() should include bill. This is not what Django does. ted's query is empty, while bill's query includes ted. # people.modelsfrom django.db import modelsclass Person(models.Model): name = models.CharField(max_length=255) friends = models.ManyToManyField("self", through='Friendship', through_fields=('personA', 'personB'), symmetrical=True, ) def __str__(self): return self.nameclass Friendship(models.Model): personA = models.ForeignKey(Person, on_delete=models.CASCADE, related_name='personA') personB = models.ForeignKey(Person, on_delete=models.CASCADE, related_name='personB') start = models.DateField(null=True, blank=True) end = models.DateField(null=True, blank=True) def __str__(self): return ' and '.join([str(self.personA), str(self.personB)]) >>> import django >>> django.__version__ '3.1.2'>>> from people.models import Person, Friendship>>> bill = Person(name='bill')>>> bill.save()>>> ted = Person(name='ted')>>> ted.save()>>> bill_and_ted = Friendship(personA=bill, personB=ted)>>> bill_and_ted.save()>>> bill.friends.all()<QuerySet [<Person: ted>]>>>> ted.friends.all()<QuerySet []>>>> ted.refresh_from_db()>>> ted.friends.all()<QuerySet []>>>> ted = Person.objects.get(name='ted')>>> ted.friends.all()<QuerySet []> Can someone please show me how to make this behave as expected. -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/MJmh5Qw--3-2%40tutanota.com.
