Generates Twitter Bootstrap compatible breadcrumbs with the Crummy gem.

_breadcrumbs.html.erb

<% render_crumbs do |crumbs| %>                                                  
  <ul class="breadcrumb">                                                        
  <% crumbs.each_with_index do |crumb, index| %>                                 
    <li>                                                                            
      <% if index < crumbs.size - 1 %>                                           
        <%= link_to *crumb %>                                                       
        <span class="divider">/</span>                                              
      <% else %>                                                                    
        <li class="active"><%= crumb[0] %></li>                                     
      <% end %>                                                                  
    </li>                                                                           
  <% end %>                                                                         
  </ul>                                                                             
<% end %>  

You can just do this instead of making a custom template:

<%= render_crumbs :last_crumb_linked => false, :format => :html_list, :ul_class => 'breadcrumb', :last_class => 'active' %>