ruby - NoMethodError in Rails when creating a new instance of model -

i have model depends model, have specified in routes.rb file

rails.application.routes.draw   resources :events     resources :guests     :whereabouts   end   devise_for :users, :controllers => { registrations: 'registrations' } 

models/event.rb:

class event < activerecord::base   belongs_to :user   has_many :guests end 

models/guest.rb:

class guest < activerecord::base   belongs_to :event end 

when access http://localhost:3000/events/2/guests/ works when access http://localhost:3000/events/2/guests/new get

undefined method `guests_path' #<#<class:0x00000004074f78>:0x0000000aaf67c0> 

from line #1 of views/guests/_form.html.erb file is

  <%= form_for(@guest) |f| %>   <% if @guest.errors.any? %>     <div id="error_explanation">       <h2><%= pluralize(@guest.errors.count, "error") %> prohibited event being saved:</h2>       <ul>       <% @guest.errors.full_messages.each |message| %>         <li><%= message %></li>       <% end %>       </ul>     </div>   <% end %>    <div class="field">     <%= f.text_field :first_name %>   </div>   <div class="field">     <%= f.text_field :last_name %>   </div>   <div class="field">     <%= f.text_field :email %>   </div>   <div class="actions">     <%= f.submit %>   </div> <% end %> 

i changed paths proper ones since guests_path should event_guests_path, don't know change in form work properly.

any clue? routing wrong?

your routing correct. guest object depends event 1 have change form to:

<%= form_for [@event, @guest] |f| %>  ... <% end %> 

you must have initialized @event variable in controller did like:

@event = event.find(params[:event_id]) @guest = @event.guests.build