从 button_to 调用控制器方法

Question

我想在控制器中调用这个方法

  def setplaylist
   @stream.programmed_at = Time.now.to_i
  end

从这一行来看

<%= button_to 'Reprogram', @stream, :method => :setplaylist, :remote => true %>

我收到 No routes match [POST] 错误。

编辑： 我的 routes.rb 文件

   Rails.application.routes.draw do
  get 'splashpage/splash'
  root :to => 'splashpage#splash', :as =>'splash'


resources :streams do
  resources :videos

end

EDIT 2 rake 路线

         Prefix Verb   URI Pattern                                   Controller#Action
splashpage_splash GET    /splashpage/splash(.:format)                  splashpage#splash
           splash GET    /                                             splashpage#splash
    stream_videos GET    /streams/:stream_id/videos(.:format)          videos#index {:member=>{:setplaylist=>:post}}
                  POST   /streams/:stream_id/videos(.:format)          videos#create {:member=>{:setplaylist=>:post}}
 new_stream_video GET    /streams/:stream_id/videos/new(.:format)      videos#new {:member=>{:setplaylist=>:post}}
edit_stream_video GET    /streams/:stream_id/videos/:id/edit(.:format) videos#edit {:member=>{:setplaylist=>:post}}
     stream_video GET    /streams/:stream_id/videos/:id(.:format)      videos#show {:member=>{:setplaylist=>:post}}
                  PATCH  /streams/:stream_id/videos/:id(.:format)      videos#update {:member=>{:setplaylist=>:post}}
                  PUT    /streams/:stream_id/videos/:id(.:format)      videos#update {:member=>{:setplaylist=>:post}}
                  DELETE /streams/:stream_id/videos/:id(.:format)      videos#destroy {:member=>{:setplaylist=>:post}}
          streams GET    /streams(.:format)                            streams#index {:member=>{:setplaylist=>:post}}
                  POST   /streams(.:format)                            streams#create {:member=>{:setplaylist=>:post}}
       new_stream GET    /streams/new(.:format)                        streams#new {:member=>{:setplaylist=>:post}}
      edit_stream GET    /streams/:id/edit(.:format)                   streams#edit {:member=>{:setplaylist=>:post}}
           stream GET    /streams/:id(.:format)                        streams#show {:member=>{:setplaylist=>:post}}
                  PATCH  /streams/:id(.:format)                        streams#update {:member=>{:setplaylist=>:post}}
                  PUT    /streams/:id(.:format)                        streams#update {:member=>{:setplaylist=>:post}}
                  DELETE /streams/:id(.:format)                        streams#destroy {:member=>{:setplaylist=>:post}}

rake 路线 | grep 设置播放列表

       stream_videos GET    /streams/:stream_id/videos(.:format)          videos#index {:member=>{:setplaylist=>:post}}
                  POST   /streams/:stream_id/videos(.:format)          videos#create {:member=>{:setplaylist=>:post}}
 new_stream_video GET    /streams/:stream_id/videos/new(.:format)      videos#new {:member=>{:setplaylist=>:post}}
edit_stream_video GET    /streams/:stream_id/videos/:id/edit(.:format) videos#edit {:member=>{:setplaylist=>:post}}
     stream_video GET    /streams/:stream_id/videos/:id(.:format)      videos#show {:member=>{:setplaylist=>:post}}
                  PATCH  /streams/:stream_id/videos/:id(.:format)      videos#update {:member=>{:setplaylist=>:post}}
                  PUT    /streams/:stream_id/videos/:id(.:format)      videos#update {:member=>{:setplaylist=>:post}}
                  DELETE /streams/:stream_id/videos/:id(.:format)      videos#destroy {:member=>{:setplaylist=>:post}}
          streams GET    /streams(.:format)                            streams#index {:member=>{:setplaylist=>:post}}
                  POST   /streams(.:format)                            streams#create {:member=>{:setplaylist=>:post}}
       new_stream GET    /streams/new(.:format)                        streams#new {:member=>{:setplaylist=>:post}}
      edit_stream GET    /streams/:id/edit(.:format)                   streams#edit {:member=>{:setplaylist=>:post}}
           stream GET    /streams/:id(.:format)                        streams#show {:member=>{:setplaylist=>:post}}
                  PATCH  /streams/:id(.:format)                        streams#update {:member=>{:setplaylist=>:post}}
                  PUT    /streams/:id(.:format)                        streams#update {:member=>{:setplaylist=>:post}}
                  DELETE /streams/:id(.:format)                        streams#destroy {:member=>{:setplaylist=>:post}}

在进行 Max 的更改后，我收到一个无方法错误。未定义的方法 setplaylist_stream_path。

Answer 1

您需要添加 setplaylist 路由。在您的路线文件中，更改此项

resources :streams do
  resources :videos
end

到

resources :streams, :member => {:setplaylist => :post} do
  resources :videos
end

现在您的 button_to（我认为它默认会生成一个发布请求）应该可以工作了。最好把语法改成这样：

<%= button_to 'Reprogram', setplaylist_stream_path(@stream), :remote => true %>

您还需要确保在您的操作代码运行时定义了@stream。您可能还想在更改后保存@stream。将您的操作更改为

def setplaylist
  @stream = Stream.find(params[:id])
  @stream.programmed_at = Time.now.to_i
  @stream.save
end

如果这就是它所做的全部，我实际上只是在调用通常的“更新”操作时执行此操作，而不是为其执行新操作。