嵌套资源+自定义控制器方法

Question

我正在关注sortable lists上的Railscast，并且我遇到嵌套资源的问题。

在我的应用程序中，“项目”有很多“步骤”，我正在为“步骤”创建一个可排序列表。

我添加的方法“排序”的步骤控制器和正在错误 未定义的局部变量或方法`sort_project_steps_url”当我尝试加载我的网页。如果我从tbody中删除data-update-url，页面会正确加载。链接排序的正确方法是什么？

的routes.rb：

resources :projects do 
    resources :steps 
     match "steps/:id" => "steps#number", :as => :number 
     collection {post :sort} 
    end 

steps.controller：

class StepsController < ApplicationController 
    before_filter :get_project 

    # Sorts steps 
    def sort 
    render nothing: true 
    end 

    private 
    # get_project converts the project_id given by the routing 
    # into an @project object 
    def get_project 
    @project = Project.find(params[:project_id]) 
    end 
end 

步骤/ show.html.erb：

<table id="stepTable"> 
    <tbody data-update-url="<%= sort_project_steps_url(@project) %>"> 
</tbody> 
</table> 

我耙路线低于（不知道为什么排序出现在项目下而不是步骤）：

    admin_root   /admin(.:format)        admin/dashboard#index 
batch_action_admin_admin_users POST  /admin/admin_users/batch_action(.:format)  admin/admin_users#batch_action 
      admin_admin_users GET  /admin/admin_users(.:format)     admin/admin_users#index 
           POST  /admin/admin_users(.:format)     admin/admin_users#create 
      new_admin_admin_user GET  /admin/admin_users/new(.:format)    admin/admin_users#new 
     edit_admin_admin_user GET  /admin/admin_users/:id/edit(.:format)   admin/admin_users#edit 
       admin_admin_user GET  /admin/admin_users/:id(.:format)    admin/admin_users#show 
           PUT  /admin/admin_users/:id(.:format)    admin/admin_users#update 
           DELETE  /admin/admin_users/:id(.:format)    admin/admin_users#destroy 
       admin_dashboard   /admin/dashboard(.:format)      admin/dashboard#index 
    batch_action_admin_images POST  /admin/images/batch_action(.:format)   admin/images#batch_action 
        admin_images GET  /admin/images(.:format)      admin/images#index 
           POST  /admin/images(.:format)      admin/images#create 
       new_admin_image GET  /admin/images/new(.:format)     admin/images#new 
       edit_admin_image GET  /admin/images/:id/edit(.:format)    admin/images#edit 
        admin_image GET  /admin/images/:id(.:format)     admin/images#show 
           PUT  /admin/images/:id(.:format)     admin/images#update 
           DELETE  /admin/images/:id(.:format)     admin/images#destroy 
    batch_action_admin_projects POST  /admin/projects/batch_action(.:format)   admin/projects#batch_action 
       admin_projects GET  /admin/projects(.:format)      admin/projects#index 
           POST  /admin/projects(.:format)      admin/projects#create 
      new_admin_project GET  /admin/projects/new(.:format)     admin/projects#new 
      edit_admin_project GET  /admin/projects/:id/edit(.:format)    admin/projects#edit 
       admin_project GET  /admin/projects/:id(.:format)     admin/projects#show 
           PUT  /admin/projects/:id(.:format)     admin/projects#update 
           DELETE  /admin/projects/:id(.:format)     admin/projects#destroy 
     batch_action_admin_steps POST  /admin/steps/batch_action(.:format)   admin/steps#batch_action 
        admin_steps GET  /admin/steps(.:format)       admin/steps#index 
           POST  /admin/steps(.:format)       admin/steps#create 
       new_admin_step GET  /admin/steps/new(.:format)      admin/steps#new 
       edit_admin_step GET  /admin/steps/:id/edit(.:format)    admin/steps#edit 
        admin_step GET  /admin/steps/:id(.:format)      admin/steps#show 
           PUT  /admin/steps/:id(.:format)      admin/steps#update 
           DELETE  /admin/steps/:id(.:format)      admin/steps#destroy 
    batch_action_admin_comments POST  /admin/comments/batch_action(.:format)   admin/comments#batch_action 
       admin_comments GET  /admin/comments(.:format)      admin/comments#index 
           POST  /admin/comments(.:format)      admin/comments#create 
       admin_comment GET  /admin/comments/:id(.:format)     admin/comments#show 
     new_admin_user_session GET  /admin/login(.:format)       active_admin/devise/sessions#new 
      admin_user_session POST  /admin/login(.:format)       active_admin/devise/sessions#create 
    destroy_admin_user_session DELETE|GET /admin/logout(.:format)      active_admin/devise/sessions#destroy 
      admin_user_password POST  /admin/password(.:format)      active_admin/devise/passwords#create 
     new_admin_user_password GET  /admin/password/new(.:format)     active_admin/devise/passwords#new 
     edit_admin_user_password GET  /admin/password/edit(.:format)     active_admin/devise/passwords#edit 
           PUT  /admin/password(.:format)      active_admin/devise/passwords#update 
       project_steps GET  /projects/:project_id/steps(.:format)   steps#index 
           POST  /projects/:project_id/steps(.:format)   steps#create 
       new_project_step GET  /projects/:project_id/steps/new(.:format)  steps#new 
      edit_project_step GET  /projects/:project_id/steps/:id/edit(.:format) steps#edit 
        project_step GET  /projects/:project_id/steps/:id(.:format)  steps#show 
           PUT  /projects/:project_id/steps/:id(.:format)  steps#update 
           DELETE  /projects/:project_id/steps/:id(.:format)  steps#destroy 
       project_number   /projects/:project_id/steps/:id(.:format)  steps#number 
       sort_projects POST  /projects/sort(.:format)      projects#sort 
         projects GET  /projects(.:format)       projects#index 
           POST  /projects(.:format)       projects#create 
        new_project GET  /projects/new(.:format)      projects#new 
        edit_project GET  /projects/:id/edit(.:format)     projects#edit 
         project GET  /projects/:id(.:format)      projects#show 
           PUT  /projects/:id(.:format)      projects#update 
           DELETE  /projects/:id(.:format)      projects#destroy 
         images GET  /images(.:format)        images#index 
           POST  /images(.:format)        images#create 
        new_image GET  /images/new(.:format)       images#new 
        edit_image GET  /images/:id/edit(.:format)      images#edit 
         image GET  /images/:id(.:format)       images#show 
           PUT  /images/:id(.:format)       images#update 
           DELETE  /images/:id(.:format)       images#destroy 
          root   /           projects#index 

Answer 1

明白了，我的routes.rb中有错误;我没有在“步骤”下嵌套收藏。这是我的修复：

resources :projects do 
    resources :steps do 
     collection {post :sort} 
     end 
     match "steps/:id" => "steps#number", :as => :number 
    end 

谢谢，AnkitG，指出我在正确的方向。