嵌套路由

如果要添加嵌套路由，可以在 routes.rb 文件中编写以下代码。

resources :admins do
  resources :employees
end

这将生成以下路线：

     admin_employees GET      /admins/:admin_id/employees(.:format)            employees#index
                     POST     /admins/:admin_id/employees(.:format)            employees#create
  new_admin_employee GET      /admins/:admin_id/employees/new(.:format)        employees#new
 edit_admin_employee GET      /admins/:admin_id/employees/:id/edit(.:format)   employees#edit
      admin_employee GET      /admins/:admin_id/employees/:id(.:format)        employees#show
                     PATCH    /admins/:admin_id/employees/:id(.:format)        employees#update
                     PUT      /admins/:admin_id/employees/:id(.:format)        employees#update
                     DELETE   /admins/:admin_id/employees/:id(.:format)        employees#destroy
              admins GET      /admins(.:format)                                admins#index
                     POST     /admins(.:format)                                admins#create
           new_admin GET      /admins/new(.:format)                            admins#new
          edit_admin GET      /admins/:id/edit(.:format)                       admins#edit
               admin GET      /admins/:id(.:format)                            admins#show
                     PATCH    /admins/:id(.:format)                            admins#update
                     PUT      /admins/:id(.:format)                            admins#update
                     DELETE   /admins/:id(.:format)                            admins#destroy