Rails Routes Namespaces and form_for

Question

I have namespace in my routes.rb

  namespace :businesses do     resources :registration   end 

My controller is in a subdirectory businesses/registration_controller.

def new   @business = Business.new end 

In my view, I want to do this form_for @business do |f| ... but I am getting the following error:

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

Restarted the server and I'm also getting this:

undefined methodbusinesses_path' for #<#:0x10339bb20>`

Here are my rake routes:

                   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

If you have namespaced routes the best way is:

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

in routes.rb:

namespace :admin do   resources :businesses end 

In view:

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

The Docs: http://guides.rubyonrails.org/form_helpers.html section 2.3.1 Dealing with Namespaces

Regarding your case:

In routes.rb everything is o'k. In the view you should write url explicitly because you have variable in controller other than controller name:

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

I suppose that in businesses/registration_controller you have something like this:

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

And one remark: I wouldn't create registration_controller for registering a new business. I think that keeping business related actions in business_controller is much clearer.

Answer 2

Actually, I think there is a better solution.

form_for [:admin, @business] 

the issue with giving a url is that if you abstract the form out as a partial view, you'll need to deal with "create" and "update" situations. They points to different urls, and ends up with providing the @url in controller.