ruby on rails - Routing Error in ROR -

i have 2 button in index page

1. register
2. login

if clicked should redirect new.html.erb page, when clicked in register button found below error. please me resolve error.

error:

no route matches [post] "/posts/new" 

my code snippets given below.

in posts/index.html.erb

<h1>index page</h1> <h1>register here</h1> <hr /> <p> <%= button_to "register",posts_new_path%> </p> <p> <%= button_to "login" %> </p> 

in posts/new.html.erb

<h1>register here</h1> 

in controller/posts_controller.rb

class postscontroller < applicationcontroller     def index     end      def new        @user=user.new     end end 

in config/routes.rb

rails.application.routes.draw    root "posts#index"    "posts/new" => "posts#new"   #resources:posts   # priority based upon order of creation: first created -> highest priority.   # see how routes lay out "rake routes".    # can have root of site routed "root"   # root 'welcome#index'    # example of regular route:   #   'products/:id' => 'catalog#view'    # example of named route can invoked purchase_url(id: product.id)   #   'products/:id/purchase' => 'catalog#purchase', as: :purchase    # example resource route (maps http verbs controller actions automatically):   #   resources :products    # example resource route options:   #   resources :products   #     member   #       'short'   #       post 'toggle'   #     end   #   #     collection   #       'sold'   #     end   #   end    # example resource route sub-resources:   #   resources :products   #     resources :comments, :sales   #     resource :seller   #   end    # example resource route more complex sub-resources:   #   resources :products   #     resources :comments   #     resources :sales   #       'recent', on: :collection   #     end   #   end    # example resource route concerns:   #   concern :toggleable   #     post 'toggle'   #   end   #   resources :posts, concerns: :toggleable   #   resources :photos, concerns: :toggleable    # example resource route within namespace:   #   namespace :admin   #     # directs /admin/products/* admin::productscontroller   #     # (app/controllers/admin/products_controller.rb)   #     resources :products   #   end end 

i using rails version-4

posts_new_path isn't defined anywhere in application.

i'd suggest take @ rails routing guide gain deeper understanding quickest way fix change routes.rb file read:

rails.application.routes.draw   root "posts#index"   "posts/new" => "posts#new", as: new_post   #resources:posts end 

and in view:

<%= button_to "register",new_post_path%> 

using as method in routes creates named route using phrase specified either path or url on end, can used in views.

you use phrase resources :posts expose number of named routes in application 7 crud actions. read in guide on may depending on how application structured.