title: about custom rails 3 scaffold template
body: <p>in the default index.html.erb template there didn't display id ,created_at,updated_at columns</p>
  
  <p>so now i want to display them by change the template
  but i didn't find the meta variant,here is the part of the original index.html.erb template file code,it use a <code>attributes</code> to display all user defined column,but didn't show default columns,dose someone know how to add this 3 columns </p>
  
  <pre><code>&lt;% for attribute in attributes -%&gt;
     &lt;div class="field"&gt;
      &lt;%%= f.label :&lt;%= attribute.name %&gt; %&gt;&lt;br /&gt;
      &lt;%%= f.&lt;%= attribute.field_type %&gt; :&lt;%= attribute.name%&gt; %&gt;
    &lt;/div&gt;
  &lt;% end -%&gt;
  </code></pre>