Changes to model with one to one relation not saving - django

Question

I have two models that I'm relating using Django's OneToOneField, following this documentation: https://docs.djangoproject.com/en/2.0/topics/db/examples/one_to_one/
class Seats(models.Model):
north = models.OneToOneField('User',on_delete=models.CASCADE,related_name='north', default=None, null=True)
bridgetable = models.OneToOneField('BridgeTable',on_delete=models.CASCADE, default=None, null=True)
class BridgeTableManager(models.Manager):
def create_deal(self):
deal = construct_deal()
table = self.create(deal=deal)
s = Seats(bridgetable=table)
s.save()
return table
class BridgeTable(models.Model):
deal = DealField(default=None,null=True)
When I run this code I can successfully get the relationship working
table = BridgeTable.objects.get(pk='1')
user = User.objects.get(username=username)
table.seats.north = user
table.seats.north.save()
print(table.seats.north)
The print statement prints out the name of the player sitting north. But if I try to access the table again like this:
table = BridgeTable.objects.get(pk='1')
print(table.seats.north)
I get "None" instead of the user's name. Is there something I'm missing, like a save that I missed or some concept I'm not understanding? Thanks.

Answer 1

You should save Seats model object that is table.seats.save()
Try print table.seats.north
While table.seats.north.save() runs save on User object
Here are correct steps:
table = BridgeTable.objects.get(pk='1')
user = User.objects.get(username=username)
table.seats.north = user
table.seats.save()
print(table.seats.north)