Question

我想创建嵌套了OrderContentSerializer的OrderSerializer，OrderContentSerializer具有PrimaryKeyRelatedField，

通过OrderContentSerializers独立保存数据时，我能够保存订单内容，但是当使用OrderSerializer时，不会创建ordercontent

我尝试直接使用列表输入（很多= true）运行OrderContentSerializer，效果很好

>>> from orders.serializers import OrderContentCreateSerializer
>>> d2=[{ "product": 1, "quantity": 1}, {"product": 1, "quantity": 1}]
>>> o=OrderContentCreateSerializer(data=d2,many=True)
>>> o.is_valid()
True
>>> o.save(order=Order.objects.get(id=1))

订单内容已创建

我知道在OrderSerializer的create方法中传递的ordercontent数据包含模型实例而不是主键的整数值

serializers.py

class OrderContentCreateSerializer(ModelSerializer):
    id = serializers.IntegerField(required=False)
    product = serializers.PrimaryKeyRelatedField(queryset=ProductSS.objects.all())
    # service
    class Meta:
        model=models.OrderContent
        fields = (
            "id",
            "product",
            "quantity"
        )



class OrderSerializer(ModelSerializer):
    """customer ,created by,business will be passed if the id exist in views via save methods"""
    id = serializers.IntegerField(required=False)
    reference = serializers.UUIDField(required=False)
    created_on = serializers.DateTimeField(required=False)
    completed_on = serializers.DateTimeField(required=False)
    business = BusinessProfileSerializer(required=False)
    ordercontent=OrderContentCreateSerializer(many=True)
    class Meta:
        model = models.Order
        fields = (
            "id",
            "reference",
            "total_price",
            "customer_name",
            "order_status",
            "created_on",
            "completed_on",
            "paid",
            "business",
            "ordercontent"
        )
        read_only_fields = (
            "id",
            "reference"
        )

    def create(self, validated_data):
        ordercontentdata = validated_data.pop("ordercontent")
        # print(ordercontentdata)
        order = models.Order.objects.create(**validated_data)
        serializer = OrderContentCreateSerializer(data=ordercontentdata,many=True)
        if serializer.is_valid():
            serializer.save(order=order)
        else:
            order.delete()
            print(serializer.errors)
        return order

我不认为将需要订购模型

models.py

class OrderContent(models.Model):

    order = models.ForeignKey("orders.Order",
            related_name="ordercontent",
            verbose_name=_("order"), on_delete=models.CASCADE)
    product = models.ForeignKey("catalogs.ProductSS",
        verbose_name=_("product"), on_delete=models.CASCADE,
        related_name="ordercontent")
    quantity = models.IntegerField(_("quantity"), default=1)

我得到的错误是

[{'product': [ErrorDetail(string='Incorrect type. Expected pk value, received ProductSS.', code='incorrect_type')]}, {'product': [ErrorDetail(string='Incorrect type. Expected pk value, received ProductSS.', code='incorrect_type')]}]

我希望能够仅通过传递外键字段的主键来使用Orderserializer直接保存订单+订单内容

如果嵌套序列化程序具有PrimaryKeyRelatedField

0 个答案: