Question

I’m making a website with a page where users can sign up to win an iPad. I created a model ipad.rb and an ipads_controller.rb and there were three columns in the migration for name, email and twitter handle. I was surprised when Rails didn’t create routes automatically (I thought it was supposed to do that always).

I added this in the routes file

resource :ipad
  match '/signup',  :to => 'ipads#new'

When I tried to create the sign up form, I got this error message before fully completing it

undefined method `ipads_path' for #<#<Class:0x00000103a64ec0>:0x00000103a49aa8>

This surprised me because why was it plural?

So far I’ve only created a form in new.html.erb and the model ipad.rb and two actions in the ipads_controller.rb new and create.

Can anyone see what i’m doing wrong? i.e. why does Rails think I need a method ipads_path. Also note that I had created a model IPad.rb but deleted it and the migrations.

new.html.erb

<h1>Win an iPad</h1>

<h1>Sign up for iPad</h1>

<%= form_for(@ipad) do |f| %>
  <div class="field">
    <%= f.label :name %><br />
    <%= f.text_field :name %>
  </div>
  <div class="field">
    <%= f.label :email %><br />
    <%= f.text_field :email %>
  </div>

  <div class="actions">
    <%= f.submit "Sign up" %>
  </div>
<% end %>

ipad.rb

class Ipad < ActiveRecord::Base

attr_accessible :name, :email, :twitter

email_regex = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i

validates :name, :presence => true,
                 :length   => { :maximum => 50 }
validates :email, :presence => true,
                  :format   => { :with => email_regex }, 
                  :uniqueness => true

end

ipads_controller.rb

class IpadsController < ApplicationController

  def new
    @ipad = Ipad.new
    @title = "iPad Contest"
  end

  def create
    @ipad = Ipad.new(params[:ipad])
    if @ipad.save
      # Handle a successful save.
    else
      @title = "iPad Contest"
      render 'new'
    end
  end


end

routes.rb

Enki::Application.routes.draw do
  namespace 'admin' do
    resource :session

    resources :posts, :pages do
      post 'preview', :on => :collection
    end
    resources :comments
    resources :undo_items do
      post 'undo', :on => :member
    end

    match 'health(/:action)' => 'health', :action => 'index', :as => :health



    root :to => 'dashboard#show'
  end

  resources :archives, :only => [:index]
  resources :pages, :only => [:show]

  resource :ipad
  match '/signup',  :to => 'ipads#new'

  constraints :year => /\d{4}/, :month => /\d{2}/, :day => /\d{2}/ do
    get ':year/:month/:day/:slug/comments'  => 'comments#index'
    post ':year/:month/:day/:slug/comments' => 'comments#create'
    get ':year/:month/:day/:slug/comments/new' => 'comments#new'
    get ':year/:month/:day/:slug' => 'posts#show'
  end

  scope :to => 'posts#index' do
    get 'posts.:format', :as => :formatted_posts
    get '(:tag)', :as => :posts
  end

  root :to => 'posts#index'
end

Answer 1

Your resource ‘ipad’ should be plural in the routes, i.e.

resources :ipads