来自 ManyToManyField 的 Django Serializer 使用 through

Question

我正在尝试从 Django 序列化用户模型，包括我创建的多对多关系。

这是我的模型：

class CompanyAccount(models.Model):
   id = models.UUIDField(default=uuid.uuid4, unique=True, primary_key=True, editable=False)
   user_ids = models.ManyToManyField(User, through='CompanyUser')

class CompanyUser(models.Model):
   id = models.UUIDField(default=uuid.uuid4, unique=True, primary_key=True, editable=False)
   user_id = models.ForeignKey(User, on_delete=models.CASCADE)
   company_id = models.ForeignKey(CompanyAccount, on_delete=models.CASCADE)
   is_company_admin = models.BooleanField(default=False, null=True)

现在我的目标是将公司序列化并与任何用户一起返回。

这是我的序列化程序，但遗憾的是公司没有返回。

class CompanyAccountSerializer(serializers.ModelSerializer):
    address_id = AddressSerializer(many=False)

    class Meta:
        model = CompanyAccount
        fields = '__all__'

class UserSerializer(serializers.ModelSerializer):
    company_id = CompanyAccountSerializer(many=False, read_only=True)

    class Meta:
        model = User
        fields = ['id', 'username', 'email', 'first_name', 'last_name', 'company_id']

欢迎任何帮助:-)

Answer 1

ManyToManyField的默认相关名称是<i>modelname</i>_set，所以你可以这样实现：

class UserSerializer(serializers.ModelSerializer):
    <strong>companyaccount_set</strong> = CompanyAccountSerializer(many=True, read_only=True)

    class Meta:
        model = User
        fields = ['id', 'username', 'email', 'first_name', 'last_name', 'companyaccount_set']

如果要重命名字段，可以使用：

class UserSerializer(serializers.ModelSerializer):
    <strong>accounts</strong> = CompanyAccountSerializer(many=True, read_only=True, <b>source='companyaccount_set'</b>)

    class Meta:
        model = User
        fields = ['id', 'username', 'email', 'first_name', 'last_name', <b>'accounts'</b>]

来自 ManyToManyField 的 Django Serializer 使用 through

Django Serializer from ManyToManyField using through

django

django-models

django-rest-framework

django-serializer