app/views/controller_actions/edit.html.erb
<h1>Editing controller_action</h1>
<%= form_tag :action => 'update', :id => @controller_action do %>
<%= render :partial => 'form' %>
<%= submit_tag 'Edit' %>
<% end %>
<%= link_to 'Show', :action => 'show', :id => @controller_action %> |
<%= link_to 'Back', :action => 'index' %>