pretty item urls

app/models/item.rb

@@ -156,6 +156,14 @@ class Item < ActiveRecord::Base
     }
   end
 
+  def name_for_url
+    name.downcase.gsub(' ', '-')
+  end
+
+  def to_param
+    "#{id}-#{name_for_url}"
+  end
+
   before_create do
     self.sold_in_mall ||= false
     true

app/views/items/show.html.haml

@@ -1,4 +1,7 @@
 - title @item.name
+- content_for :meta do
+  %link{:rel => 'canonical', :href => url_for(@item)}
+
 %header
   = image_tag @item.thumbnail_url, :id => 'item-thumbnail'
   %div

app/views/layouts/application.html.haml

@@ -9,6 +9,7 @@
     /[if IE]
       = include_javascript_libraries :html5
     = stylesheet_link_tag "compiled/screen"
+    = yield :meta
     = csrf_meta_tag
     = signed_in_meta_tag
   %body{:class => body_class}