将许多串行器添加到嵌套的序列化程序字段 [英] Adding Many Serializer to A Nested Serializer Field

问题描述

class BusOncomingSerializer(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 = BusOncomingSerializer(many=True)

我有我的串行器实例有效一个列表如下：

I have my serializer instances which are valid in a list as below:

buses_serializers = [bus1, bus2, bus3]
# busX means instance of BusOncomingSerializer and they are valid.

我正在尝试添加这些 BusOncomingSerializer 到一个 StopOncomingSerializer 实例：

I am trying to add these BusOncomingSerializer instances to a single StopOncomingSerializer instance by:

serializer = serializers.StopOncomingSerializers(data={"idn": 1, "buses": buses_serializers})

而且我运行 is_valid（）。然而，它引起：

And I run is_valid(). However, it raises:

TypeError： BusOncomingSerializer（data = {'idn'：285，'stops_left' ：7}）：idn = IntegerField（read_only = True）stops_left = IntegerField（read_only = True）不是JSON可序列化

TypeError: BusOncomingSerializer(data={'idn': 285, 'stops_left': 7}): idn = IntegerField(read_only=True) stops_left = IntegerField(read_only=True) is not JSON serializable

没有添加我的序列化器实例与列表，是否有另一种方式？

Should I not add my serializer instances with a list, is there another way?

• python 3.5.1


• django 1.9.5


• django-rest-framework 3.3。 3

推荐答案

您正在将数据错误传递给 StopOncomingSerializer 。

You are passing the data incorrectly to StopOncomingSerializer. Instead of passing bus instances, you should pass the values as list of dictionaries.

示例数据格式，而不是通过总线实例，您应该将值作为字典列表传递。 ：

Sample Data format:

{
    'idn': 7, 
    'buses': [
        {'idn':3, 'stops_left': 3}, 
        {'idn': 4, 'stops_left':6}
    ]
}

在Python Shell中：

In [5]: data = {'idn': 7, 'buses': [{'idn':3, 'stops_left': 3}, {'idn': 4, 'stops_left':6}]}

In [6]: s1 = StopOncomingSerialier(data=data)

In [7]: s1.is_valid()
Out[7]: True

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