ruby - rails redirect_to 如何携带返回参数

Question

新手。
用脚手架生成的代码，notice可以在前端显示。

redirect_to users_url, notice: 'Succeed.'

<p id="notice"><%= notice %></p>

但是我添加了一个message，就失败了

redirect_to users_url, notice: 'Succeed.', message: 'test'

<p id="notice"><%= notice %></p>
<h1><%= params[:message] %></h1> #不显示
<h1><%= message %></h1> #报错不存在message

Answer 1

notice: 'Succeed.' is the parameter of redirect_to. The parameters in params are passed by url. users_url is used to generate url, so your writing method should be
redirect_to users_url(message: 'test'), notice: 'Succeed.'