如何以不同的名称序列化棉花糖字段 [英] How to serialize a Marshmallow field under a different name

问题描述

我想要一个带有以下输出json的棉花糖Schema-

I want a Marshmallow Schema with the following output json -

{
  "_id": "aae216334c3611e78a3e06148752fd79",
  "_time": 20.79606056213379,
  "more_data" : {...}
}

棉花糖不会序列化私有成员，所以这与我所能接近的完全一样-

Marshmallow doesn't serialize private members so this is as close as I can get -

class ApiSchema(Schema):
    class Meta:
        strict = True

    time = fields.Number()
    id = fields.String()

但是我确实需要输出json中的下划线.

But I do need the underscores in the output json.

有没有办法告诉棉花糖使用不同的名称来序列化字段?

Is there a way to tell Marshmallow to serialize the fields using different names?

推荐答案

https://marshmallow.readthedocs.io/en/2.x-line/quickstart.html#specifying-attribute-names

尽管该文档适用于版本2，但从3.5.1开始似乎仍然可以使用.稳定版3文档将没有此示例.

Even though the docs are for version 2, this seems to still work as of 3.5.1. The stable version 3 docs will not have this example.

class ApiSchema(Schema):
  class Meta:
      strict = True

  _time = fields.Number(attribute="time")
  _id = fields.String(attribute="id")

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