Rails： new_*something*_path 变量在哪里设置？
我为“messages”创建了一个脚手架，并且 new_message_path 和 edit_message_path （用于 link_to 中）都已设置完毕，但现在我已经创建了 app/views/messages/sent.html.erb，我想沿着<%= link_to 'Sent', sent_message_path %> 行，但我不知道该怎么做。我明白了
undefined local variable or method `sent_message_path' for #<ActionView::Base:0x103117c50>
I created a scaffold for 'messages', and new_message_path and edit_message_path (for use in link_to's) are all set up, but now I've created app/views/messages/sent.html.erb, and I want to do something along the lines of <%= link_to 'Sent', sent_message_path %>, but I can't figure out how to do that. I get
undefined local variable or method `sent_message_path' for #<ActionView::Base:0x103117c50>
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这些方法是在定义路由时自动创建的，并且在 RESTful 路由的情况下，它们遵循可预测的约定。
运行“rake paths”是查看生成的所有路由的有用方法。
我建议您阅读：http://guides.rubyonrails.org/routing.html
Those methods are created automatically when routes are defined and in the case of RESTful routes, they follow a predictable convention.
Running 'rake routes' is a helpful way of seeing all of the routes being generated.
I recommend you read: http://guides.rubyonrails.org/routing.html
更新您的routes.rb以包含以下内容：
这将为使用GET发送的操作创建一个新路由。
Update your routes.rb to contain something along the lines of:
This will create a new route for the sent action using GET.
您的问题的答案位于 http://railsapi.com/ doc/rails-v2.3.8/classes/ActionController/Resources.html
Answer for your question is situated at http://railsapi.com/doc/rails-v2.3.8/classes/ActionController/Resources.html