Allow specifying output field when using `unknown=INCLUDE` · marshmallow-code/marshmallow#853

(3 评论) (4 反应) (0 负责人)Python (6,787 star) (640 fork)batch import

feedback welcomehelp wanted

描述

From https://github.com/marshmallow-code/marshmallow/issues/524#issuecomment-393057138

We could even go further and let the user set a default Field when using INCLUDE, but I'm not sure it is so useful, and it is never too late to add it in a later step.

(edited to make the argument name correct)

I suggested here that a field could be passed to unknown, e.g. unknown=fields.Str().

贡献者指南

技术栈: python
领域: backendapi
议题类型: feature
难度: 3
预计时间: 1-3 hours
活动状态: fresh
清晰度: mostly clear
前置要求: Basic PythonUnderstanding of marshmallow schemas and fieldsFamiliarity with unknown field handling
新手友好度: 50
研究方向: Examine how marshmallow currently handles the `unknown` parameter in the Schema class (likely in methods like ` serialize` or ` invoke field validators`). Review the linked discussion in issue #524 for additional context. The implementation should allow the user to pass a Field instance to `unknown=INCLUDE` to specify the output field type for unknown keys. Ensure backward compatibility and update relevant docstrings. Consider adding tests for this new feature.