名称为无效Python标识符的Djangorestframework ModelSerializer字段

Question

如果我有这样一个序列化程序：

class CommentSerializer(serializers.Serializer):
    email = serializers.EmailField()
    content = serializers.CharField(max_length=200)

那么serializer.data返回的字典将有键"email"和"content"

但我需要包含名称不是有效Python标识符的字段：

• "type"
• "@context"

有没有惯用的方法

Answer 1

尝试将to_representation()中的CommentSerializer方法重写为

class CommentSerializer(serializers.Serializer):
    type = serializers.EmailField()
    content = serializers.CharField(max_length=200)

    def to_representation(self, instance):
        data = super().to_representation(instance)
        return_data = {}
        return_data.update({"type": data['type'], "@context": data['content']})
        return return_data

例如：

In [2]: mydata = {"type": "myemail@gmail.com","content": "some content"}

In [3]: comment = CommentSerializer(data=mydata)

In [4]: comment.is_valid(True)
Out[4]: True

In [5]: comment.data
Out[5]: {'type': 'myemail@gmail.com', '@context': 'some content'}