Rest框架ListField和DictField

Rest框架ListField和DictField

本文介绍了Django Rest框架ListField和DictField的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我正在努力理解 ListField DictField 。我想使用它作为串行器上的一个字段。我有一个 ListField ,它可能包含许多 DictField 。我试图编写一个串行器如下:

I am having struggle with understanding ListField and DictField. I want to use it as a field on a serializer. I have a ListField which probably will contain many DictField. I tried to write a serializer as below:

class StopOncomingSerialier(serializers.Serializer):
    idn = serializers.IntegerField(read_only=True)
    buses = serializers.ListField(
        child=serializers.DictField(
            idn=serializers.IntegerField(read_only=True),
            stops_left=serializers.IntegerField(read_only=True)
        ),
    read_only=True
    )

我知道这是没有意义的,因为文档说 DictField ListField take 孩子作为参数。所以,上面的代码自然地提出了错误:

I know, it does not make sense, since the documentation says DictField and ListField take child as argument. And so, the code above naturally raised error:



期望的输出



Desired Output

{
    "idn": 1,
    "buses": [
        {"idn": 11, "stops_left": 4},
        {"idn": 12, "stops_left": 15}
    ]
}

如何实现? 公交车是一个列表,可能包含与我想要的一样多的元素。

How to achieve this? buses is a list and might contain as many elements as I want.


  • python 3.5.1

  • django 1.9.6

  • django-rest-framework 3.3.3

推荐答案

我想,而不是这样做,你应该使用嵌套的序列化程序。

I think instead of doing that, you should use nested serializers.

创建一个 BusSerializer 有字段 idn stops_left 。然后在 StopOncomingSerializer 中将此串行器包含为总线字段与 many = True 参数来处理多个总线数据。

Create a BusSerializer having fields idn and stops_left. Then include this serializer in your StopOncomingSerializer as buses field with many=True argument to handle multiple buses data.

class BusSerializer(serializers.Serializer):
    idn = serializers.IntegerField(read_only=True)
    stops_left = serializers.IntegerField(read_only=True)


class StopOncomingSerialier(serializers.Serializer):
    idn = serializers.IntegerField(read_only=True)
    buses = BusSerializer(many=True)

这篇关于Django Rest框架ListField和DictField的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

08-20 17:11