Django 无法用信号更新第二个字段

Question

当我将客户端添加到客户端 table 时，它会自动添加到 ClientsBalance。但是 ClientsBalance table 上的公司字段没有更新为当前公司 (company=user.company)，我希望该字段包含当前用户公司。

class Company(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
name = models.CharField(max_length=64)

class Client(models.Model):
company = models.ForeignKey('Company', on_delete=models.CASCADE)
name = models.CharField(max_length=256)

class ClientsBalance(models.Model):
company = models.ForeignKey('Company', on_delete=models.CASCADE)
client = models.OneToOneField('Client', on_delete=models.CASCADE,related_name='Client')

def create_client(sender, **kwargs):
    if kwargs['created']:
        client = ClientsBalance.objects.create(client=kwargs['instance'])
post_save.connect(create_client, sender=Client)

Answer 1

Client 的公司与 ClientsBalance 的公司之间没有关系。您可以像这样更新信号中的值。

 client = ClientsBalance.objects.create(client=kwargs['instance'], company=kwargs['instance'].company)

Django 无法用信号更新第二个字段

Django cannot update second field with signal

django

django-signals

django-models

django-forms

django-views