ruby-on-rails - 带有参数的rails 4路线

Question

这是我的路线设置

resources :messages do
  collection do
    get 'message'
  end      
end

它工作正常，但我想向这条路线添加一个参数

resources :messages do
  collection do
    get 'message/:username'
  end      
end

我在运行 rake routes 时遇到错误

rake aborted!
missing :action
/home/li/data/git/projectname/config/routes.rb:5:in `block (4 levels) in <top (required)>'
/home/li/data/git/projectname/config/routes.rb:4:in `block (3 levels) in <top (required)>'
/home/li/data/git/projectname/config/routes.rb:3:in `block (2 levels) in <top (required)>'
/home/li/data/git/projectname/config/routes.rb:2:in `block in <top (required)>'
/home/li/data/git/projectname/config/routes.rb:1:in `<top (required)>'
/home/li/data/git/projectname/config/environment.rb:5:in `<top (required)>'
Tasks: TOP => routes => environment
(See full trace by running task with --trace)

向该路由添加参数的正确方法是什么？

Answer 1

应该是

resources :messages do
  collection do
    get 'message/:username' => :message
  end      
end

如果您想使用 messages_message_url 和 messages_message_path，请使用带有 as: 选项的命名路由:

resources :messages do
  collection do
    get 'message/:username' => :message, as: 'messages_message'
  end      
end