阅读背景:

Django:ForeignKey选择= Customer.objects.filter(账户= self.account)

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class Ticket(models.Model):
    """
    An order placed by a customer.
    """
    account = models.ForeignKey(Account)
    client = models.ForeignKey(Client, choices=Client.objects.filter(account=self.account))
class Ticket(models.Model):
    """
    An orde



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