Python django rest框架-嵌套时如何表示反向关系？

我想在鸟巢上建立一种反向关系

这是我的models.py（相关模型）

我正在做一个非常简单的serializers.py

class TblusergroupsSerializer(serializers.ModelSerializer):
    class Meta:
        model = Tblusergroups
        fields = ('groupid', 'shortname', 'groupname', 'departmentname', 'subdepartmentname', 'subdepartmentshortname',
                  'divisionname', 'divisionshortname', 'seniormanager', 'manager', 'supportcontactemailaddress',
                  'comments', 'isactive', 'recordownerid', 'lastmodifieddate', 'lastmodifiedby', 'bmccode')

class TblserversSerializer(serializers.ModelSerializer):
    class Meta:
        model = Tblservers
        fields = ('serverid', 'servername', 'isvirtual', 'locationid', 'managedbyid', 'operatingsystem', 'model',
                  'assettag', 'inceptiondate', 'comments', 'assetstatusid', 'recordownerid', 'lastmodifieddate',
                  'lastmodifiedby')
        depth = 2

class TblapplicationsSerializer(serializers.ModelSerializer):
    class Meta:
        model = Tblapplications
        depth = 1

如果我只使用

TBLSERGROUPSERIALIZER

我可以看到

bmccode

上的反向关系，问题是当我试图在使用

TBLSERGROUPSERIALIZER

时表示它时

---

我猜在序列化程序上，只需要一个

def get\u bmccode

？

就可以更容易地设置嵌套序列化程序

例如（摘自）：

class TblusergroupsSerializer(serializers.ModelSerializer):
    class Meta:
        model = Tblusergroups
        fields = ('groupid', 'shortname', 'groupname', 'departmentname', 'subdepartmentname', 'subdepartmentshortname',
                  'divisionname', 'divisionshortname', 'seniormanager', 'manager', 'supportcontactemailaddress',
                  'comments', 'isactive', 'recordownerid', 'lastmodifieddate', 'lastmodifiedby', 'bmccode')

class TblserversSerializer(serializers.ModelSerializer):
    class Meta:
        model = Tblservers
        fields = ('serverid', 'servername', 'isvirtual', 'locationid', 'managedbyid', 'operatingsystem', 'model',
                  'assettag', 'inceptiondate', 'comments', 'assetstatusid', 'recordownerid', 'lastmodifieddate',
                  'lastmodifiedby')
        depth = 2

class TblapplicationsSerializer(serializers.ModelSerializer):
    class Meta:
        model = Tblapplications
        depth = 1

class TrackSerializer(serializers.ModelSerializer):
    class Meta:
        model = Track
        fields = ('order', 'title', 'duration')

class AlbumSerializer(serializers.ModelSerializer):
    tracks = TrackSerializer(many=True, read_only=True)

    class Meta:
        model = Album
        fields = ('album_name', 'artist', 'tracks')