Rails的路線命名空間和的form_for

Question

我在routes.rb中有命名空間

namespace :businesses do 
    resources :registration 
    end 

我的控制器是一個子目錄企業/ registration_controller。

def new 
    @business = Business.new 
end 

在我看來，我想這樣做form_for @business do |f| ...，但我收到以下錯誤：

No route matches {:controller=>"businesses", :action=>"create"}

重新啓動服務器，我也得到這個：

undefined method business_path'爲＃<＃：0x10339bb20>'

這裏是我的耙路線：

    home_index GET /home/index(.:format)      {:action=>"index", :controller=>"home"} 
      new_user_session GET /users/sign_in(.:format)     {:action=>"new", :controller=>"devise/sessions"} 
       user_session POST /users/sign_in(.:format)     {:action=>"create", :controller=>"devise/sessions"} 
     destroy_user_session GET /users/sign_out(.:format)     {:action=>"destroy", :controller=>"devise/sessions"} 
       user_password POST /users/password(.:format)     {:action=>"create", :controller=>"devise/passwords"} 
      new_user_password GET /users/password/new(.:format)    {:action=>"new", :controller=>"devise/passwords"} 
      edit_user_password GET /users/password/edit(.:format)    {:action=>"edit", :controller=>"devise/passwords"} 
       user_password PUT /users/password(.:format)     {:action=>"update", :controller=>"devise/passwords"} 
    cancel_user_registration GET /users/cancel(.:format)      {:action=>"cancel", :controller=>"devise/registrations"} 
      user_registration POST /users(.:format)       {:action=>"create", :controller=>"devise/registrations"} 
     new_user_registration GET /users/sign_up(.:format)     {:action=>"new", :controller=>"devise/registrations"} 
     edit_user_registration GET /users/edit(.:format)      {:action=>"edit", :controller=>"devise/registrations"} 
      user_registration PUT /users(.:format)       {:action=>"update", :controller=>"devise/registrations"} 
      user_registration DELETE /users(.:format)       {:action=>"destroy", :controller=>"devise/registrations"} 
         users GET /users(.:format)       {:action=>"index", :controller=>"users"} 
         users POST /users(.:format)       {:action=>"create", :controller=>"users"} 
        new_user GET /users/new(.:format)      {:action=>"new", :controller=>"users"} 
        edit_user GET /users/:id/edit(.:format)     {:action=>"edit", :controller=>"users"} 
         user GET /users/:id(.:format)      {:action=>"show", :controller=>"users"} 
         user PUT /users/:id(.:format)      {:action=>"update", :controller=>"users"} 
         user DELETE /users/:id(.:format)      {:action=>"destroy", :controller=>"users"} 
    full_tree_admin_categories GET /admin/categories/full_tree(.:format)  {:action=>"full_tree", :controller=>"admin/categories"} 
      admin_categories GET /admin/categories(.:format)     {:action=>"index", :controller=>"admin/categories"} 
      admin_categories POST /admin/categories(.:format)     {:action=>"create", :controller=>"admin/categories"} 
      new_admin_category GET /admin/categories/new(.:format)    {:action=>"new", :controller=>"admin/categories"} 
      edit_admin_category GET /admin/categories/:id/edit(.:format)  {:action=>"edit", :controller=>"admin/categories"} 
       admin_category GET /admin/categories/:id(.:format)    {:action=>"show", :controller=>"admin/categories"} 
       admin_category PUT /admin/categories/:id(.:format)    {:action=>"update", :controller=>"admin/categories"} 
       admin_category DELETE /admin/categories/:id(.:format)    {:action=>"destroy", :controller=>"admin/categories"} 
businesses_registration_index GET /businesses/registration(.:format)   {:action=>"index", :controller=>"businesses/registration"} 
businesses_registration_index POST /businesses/registration(.:format)   {:action=>"create", :controller=>"businesses/registration"} 
    new_businesses_registration GET /businesses/registration/new(.:format)  {:action=>"new", :controller=>"businesses/registration"} 
edit_businesses_registration GET /businesses/registration/:id/edit(.:format) {:action=>"edit", :controller=>"businesses/registration"} 
     businesses_registration GET /businesses/registration/:id(.:format)  {:action=>"show", :controller=>"businesses/registration"} 
     businesses_registration PUT /businesses/registration/:id(.:format)  {:action=>"update", :controller=>"businesses/registration"} 
     businesses_registration DELETE /businesses/registration/:id(.:format)  {:action=>"destroy", :controller=>"businesses/registration"} 
         root  /(.:format)         {:action=>"index", :controller=>"home"} 

Answer 1

如果你已經命名空間的路線最好的辦法是：

class Admin::BusinessesController < ApplicationController 
    def new 
    @business = Business.new 
    end 
end 

在routes.rb中：

namespace :admin do 
    resources :businesses 
end 

鑑於：

form_for [:admin, @business] do |f|... 

文檔：http://guides.rubyonrails.org/form_helpers.html第2.3.1節與命名空間

關於你的情況進行處理：

在routes.rb中一切都是o'k。在視圖中，你應該寫地址明確，因爲你比控制器名稱其它控制器具有可變：

form_for @business, :url => business_registration_path do |f|... 

我想，在企業/ registration_controller你有這樣的事情：

class Businesses::RegistrationController < ApplicationController 
    def new 
    @business = Business.new 
    end 
end 

而且一個備註：我不會創建registration_controller來註冊一個新的業務。我認爲在business_controller中保持業務相關的行爲要清晰得多。

Answer 2

其實我覺得還有更好的解決辦法。

form_for [:admin, @business] 

與給人一種網址的問題是，如果你抽象的形式作爲一個局部視圖，你需要處理「創建」和「更新」的情況。他們指向不同的網址，最後在控制器中提供@url。