class Client(Document):
name = StringField()
@property
def account(self):
return Account.objects(client=self).get()
class Account(Document):
client = ReferenceField(Client)
bob = Client(name='Bob').save()
acc1 = Account(client=bob).save()
acc2 = Account(client=bob).save()
2)带列表的多-2-Many(ReferenceField)
class Client(Document):
name = StringField()
@property
def accounts(self):
return Account.objects(client=self)
class M2MAccount(Document):
clients = ListField(ReferenceField(Client))
bob = Client(name='Bob').save()
john = Client(name='John').save()
m2m_acc = M2MAccount(clients=[bob, john]).save()
以下是最常见的方法:
1)具有简单引用字段的1对多
2)带列表的多-2-Many(ReferenceField)
注意,@属性是可选的,只是为了方便起见
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