DRF外键序列化过滤

• Z时代
• 2024-01-10
• 分类：综合

背景:

• 商户对应的材料，无效之后还会在前端显示。

参考

serailzers.py

• 过滤有效的数据

class FilterValidListSerializer(serializers.ListSerializer):
    def to_representation(self, data):
        logger.info("data:{}".format(type(data)))
        data = data.filter(status=SystemStatus.VALID)
        return super(FilterValidListSerializer, self).to_representation(data)

主表:商户(1)

子表: 材料(N)

class MaterialBasicSerializer(MaterialOnlyCategoryTypeSerializer):
    status = serializers.SerializerMethodField(help_text=u"使用状态")
    extra = serializers.SerializerMethodField(help_text=u"extra")
    @staticmethod
    def get_extra(obj):
        if obj.extra:
            return fmt_extra(obj.extra)
        else:
            return None
    @staticmethod
    def get_status(obj):
        status = SystemStatus.CHOICES_MAP.get(obj.status)
        return status
    class Meta:
        model = Material
        fields = ["id", "x", "status"]
        list_serializer_class = FilterValidListSerializer # 加入数据过滤
class SpotDetailSerializer(SpotSerializer):
    def to_representation(self, instance):
        user = self.context.get("request").user
        ret = super(SpotDetailSerializer, self).to_representation(instance)
        return ret
	# 子表嵌套序列化.spot.materials
    materials = MaterialBasicSerializer(
        many=True
    )
    class Meta:
        model = Spot
        fields = ["id", "xxx",  "materials"]

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