如何在django rest序列化器中创建一个嵌套的json格式?

Question

目前我在API响应中有这个格式

"inner_divertor": {
"volume": 5.2,
"volume_units": "m^2",
"volume_notes": "xyz"
},
"outer_divertor": {
"volume": null,
"volume_units": "m^3",
"volume_notes": null
}

我正在尝试添加"volume"字段，并将字段嵌套在其中。我们的目标是得到如下内容:

"inner_divertor": {
volume:{
"volume": 4.3,
"volume_units": "m^2",
"volume_notes": "xyz" 
}
},
"outer_divertor": {
volume: {
"volume": null,
"volume_units": "m^3",
"volume_notes": null
}
}

以下是序列化器:

class InnerDivertorSerializer(FlexFieldsModelSerializer):
class Meta:
model = InnerDivertor
fields = ('volume', 'volume_units', 'volume_notes')
class OuterDivertorSerializer(FlexFieldsModelSerializer):
class Meta:
model = OuterDivertor
fields = ('volume', 'volume_units', 'volume_notes')

Answer 1

根据这个链接文档，https://pypi.org/project/drf-flex-fields/

我认为你不应该把inner_divertor,outer_divertor分成两个独立的类，因为它们在同一层次结构上。

不要那样做，试试这个:

class DivertorSerializer(FlexFieldsModelSerializer):
class Meta:
model = Divertor
fields = ('inner_divertor', 'outer_divertor')
expandable_fields = {
'inner_divertor': VolumnSerializer,
'outer_divertor': VolumnSerializer
}
class VolumnSerializer(FlexFieldsModelSerializer):
class Meta:
model = Volumn
fields = ('volume', 'volume_units', 'volume_notes')

更重要的是，你需要有音量和分流器model