python之Django 序列化器输出作为 JSON 对象的一部分

上下文

我有 2 个模型:Customer 和 DeviceGroup。

目前我有一个 API 端点 /api/v1/device-groups/?customer_uuid=<customer_uuid>，它返回与给定 DeviceGroups 相关的 Customer，如下所示:

[ 
    { 
        "group_uuid": "c61361ac-0826-41bb-825a-8aa8e014ae0c", 
        "device_group_name": "Default", 
        "color": "0a2f45", 
        "is_default": true 
    }, 
    { 
        "group_uuid": "1a86e8e4-b41b-4f33-aefb-ce984ef96144", 
        "device_group_name": "Testgroup", 
        "color": "123456", 
        "is_default": false 
    } 
]  

目标

我希望 DeviceGroups 数组成为这样一个对象的一部分:

"device_groups":  
[ 
    { 
        "group_uuid": "c61361ac-0826-41bb-825a-8aa8e014ae0c", 
        "device_group_name": "Default", 
        "color": "0a2f45", 
        "is_default": true 
    }, 
    { 
        "group_uuid": "1a86e8e4-b41b-4f33-aefb-ce984ef96144", 
        "device_group_name": "Testgroup", 
        "color": "123456", 
        "is_default": false 
    } 
]  

模型

# models.py 
 
class Customer(models.Model): 
    customer_uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False, db_index=True) 
    customer_name = models.CharField(max_length=128, unique=True) 
 
 
class DeviceGroup(models.Model): 
    group_uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False, db_index=True) 
    customer_uuid = models.ForeignKey(Customer, on_delete=models.DO_NOTHING) 
    device_group_name = models.CharField(max_length=20) 
    color = models.CharField(max_length=10) 
    is_default = models.BooleanField(default=False) 

序列化器

# serializers.py 
 
class DeviceGroupSerializer(serializers.ModelSerializer): 
    class Meta: 
        model = DeviceGroup 
        fields = ('group_uuid', 'device_group_name', 'color', 'is_default') 

查看

# views.py 
 
class DeviceGroupCustomerViewSet(viewsets.ModelViewSet): 
    serializer_class = DeviceGroupSerializer 
 
    def get_queryset(self): 
        return DeviceGroup.objects.filter(customer_uuid=self.request.GET['customer_uuid']) 

我尝试创建一个新的 serializer 但它没有解决我的问题:

class TestSerializer(serializers.ModelSerializer): 
    device_groups = DeviceGroupSerializer(many=True, read_only=True) 
 
    class Meta: 
        model = DeviceGroup 
        fields = ('device_groups', 'group_uuid', 'device_group_name', 'color', 'is_default') 

我需要更改什么才能获得所需的输出？

请您参考如下方法:

你可以像这样更新你的观点

def list(self, request): 
    queryset = DeviceGroup.objects.filter(customer_uuid=self.request.GET['customer_uuid']) 
    serializer = UserSerializer(queryset, many=True) 
    return Response({'device_groups': serializer.data}) 

这将获得所需的输出..