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将旧的 Rails 3 应用程序升级到 Rails 4，由于弃用，多表继承 gem 已更改。现在，使用ActsAs。

嵌套路由不起作用产生以下错误：

undefined method `vehicle_path' for #<#<Class:0x007f0e2778da70>:0x007f0e26725778>

调用时：

  - @vehicles.each do |vehicle|
    %tr
      %td= link_to vehicle.code, vehicle

父类：

class Vehicle < ActiveRecord::Base
  actable
end

儿童班：

class Vehicles::Car < ActiveRecord::Base
  acts_as :vehicle
end

路线.rb：

namespace :vehicles do
  resources :cars, except: [:index]
end

任何帮助，将不胜感激。

更新：耙路线

vehicles          GET    /:locale/vehicles(.:format)                  vehicles#index {:locale=>/en|es/}

vehicles_cars     POST   /:locale/vehicles/cars(.:format)             vehicles/cars#create {:locale=>/en|es/}

new_vehicles_car  GET    /:locale/vehicles/cars/new(.:format)         vehicles/cars#new {:locale=>/en|es/}

edit_vehicles_car GET    /:locale/vehicles/cars/:id/edit(.:format)    vehicles/cars#edit {:locale=>/en|es/}

vehicles_car      GET    /:locale/vehicles/cars/:id(.:format)         vehicles/cars#show {:locale=>/en|es/}

                  PATCH  /:locale/vehicles/cars/:id(.:format)         vehicles/cars#update {:locale=>/en|es/}

                  PUT    /:locale/vehicles/cars/:id(.:format)         vehicles/cars#update {:locale=>/en|es/}

                  DELETE /:locale/vehicles/cars/:id(.:format)
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