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

(3 comments) (4 reactions) (0 assignees)Python (6,787 stars) (640 forks)batch import

feedback welcomehelp wanted

説明

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().

コントリビューターガイド

技術スタック: python
領域: backendapi
Issue 種別: feature
難度: 3
推定時間: 1-3 hours
活動状況: fresh
明確さ: mostly clear
前提条件: Basic PythonUnderstanding of marshmallow schemas and fieldsFamiliarity with unknown field handling
初心者向け度: 50
調査方針: 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.