I am following Head First Rails which has been written for older version of rails. I am working on its chapter 2 project but in Rails 3. Following are my files.
ads_controller.rb
class AdsController < ApplicationController
def show
@ad = Ad.find(params[:id])
end
def index
@ads = Ad.find(:all)
end
end
ad.rb
class Ad < ActiveRecord::Base
attr_accessible :description, :email, :img_url, :name, :price, :seller_id
end
index.html.rb
</h1>
<ul>
<% for ad in @ads %>
<li><a href="/ads/<%= ad.id %>"><%= ad.name %></a></li>
<% end %>
</ul>
show.html.rb
<body>
<p>
<b>Name:</b><%= @ad.name %>
</p>
<p>
<b>Description:</b><%= @ad.desciption %>
</p>
<p>
<b>Price:</b><%= @ad.price %>
</p>
<p>
<b>Seller Id:</b><%= @ad.seller_id %>
</p>
<p>
<b>Email:</b><%= @ad.email %>
</p>
<p>
<img src="<%= @ad.img_url %>"/>
</p>
</body>
schema.rb
ActiveRecord::Schema.define(:version => 20121209174120) do
create_table "ads", :force => true do |t|
t.string "name"
t.text "description"
t.decimal "price"
t.integer "seller_id"
t.string "email"
t.string "img_url"
t.datetime "created_at", :null => false
t.datetime "updated_at", :null => false
end
end
Database is populated for all the fields. http://0.0.0.0:3000/ads/ works but http://0.0.0.0:3000/ads/<any number> does not work and throws the following error:
NoMethodError in Ads#show
Showing /Users/ava/Projects/mebay/app/views/ads/show.html.erb where line #6 raised:
undefined method `desciption' for #<Ad:0x007f7ff346c100>
Extracted source (around line #6):
3: <b>Name:</b><%= @ad.name %>
4: </p>
5: <p>
6: <b>Description:</b><%= @ad.desciption %>
7: </p>
8: <p>
9: <b>Price:</b><%= @ad.price %>
Rails.root: /Users/ava/Projects/mebay
Application Trace | Framework Trace | Full Trace
app/views/ads/show.html.erb:6:in `_app_views_ads_show_html_erb___4217851794431988162_70093760484140'
On server window:
ActionView::Template::Error (undefined method `desciption' for #<Ad:0x007f7ff346c100>):
3: <b>Name:</b><%= @ad.name %>
4: </p>
5: <p>
6: <b>Description:</b><%= @ad.desciption %>
7: </p>
8: <p>
9: <b>Price:</b><%= @ad.price %>
app/views/ads/show.html.erb:6:in `_app_views_ads_show_html_erb___4217851794431988162_70093760484140'
If I remove description in show.html.rb then it works fine and displays name, price, seller_id and email. What am I doing wrong?
Ruby version: ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin11.4.0]
Rails version: Rails 3.2.7
Thanks.
You’re missing the ‘r’ in ‘description’ in show.html.erb:
undefined method 'desciption'<b>Description:</b><%= @ad.desciption %>