序列化器.py

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)

我的序列化器实例在以下列表中有效：

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

我正在尝试添加这些BusOncomingSerializer实例到单个StopOncomingSerializer实例通过：

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

我跑is_valid()。然而，它提出：

类型错误：BusOncomingSerializer(data={'idn': 285, 'stops_left': 7}): idn = IntegerField(read_only=True)stops_left = IntegerField(read_only=True) 不可 JSON 序列化

我不应该将序列化器实例添加到列表中吗？还有其他方法吗？

环境

• 蟒蛇3.5.1
• Django 1.9.5
• django-rest-framework 3.3.3

您将数据错误地传递给StopOncomingSerializer。而不是通过bus例如，您应该将值作为字典列表传递。

样本数据格式：

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

在 Python 外壳上：

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