如何在permit + Rails中合并嵌套属性 [英] How to merge nested attributes in permit + Rails

问题描述

params.require(:task).permit(:summary, comments_attributes: [:id, :content])

我想在 comments_attributes 中添加 user_id 和 project_id.

I want to add user_id and project_id in comments_attributes.

user_id    = current_user.id
project_id = project.id

我尝试了以下但不起作用

I tried with below but not working

params.require(:task).permit(:summary, comments_attributes: [:id, :content]).merge(user_id: current_user.id, comments_attributes: [user_id: current_user.id, project_id: project.id])

请帮助我如何做到这一点?

Please help me how can I do this?

推荐答案

虽然是个老问题，但恕我直言，正确答案是这个 ->

Although an old question, the right answer IMHO is this ->

在 Rails 5 中，您应该使用 reverse_merge 而不是 .to_h.deep_merge

In Rails 5, instead of .to_h.deep_merge you should use reverse_merge

params.require(:task).permit(:summary, comments_attributes: [:id, :content]).reverse_merge(user_id: current_user.id, comments_attributes: [user_id: current_user.id, project_id: project.id])

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