<% table_listing @users do |c| %>
  <%= c.add('Username') {|u| link_to(u.username, user_path(u))} %>
  <%= c.add('E-mail')(&:email) %>
  <%= c.add('Full name')(&:full_name) %>
  <% c.add do %>
    <%= button_to 'Destroy', user_path(u), :method => :delete %>
  <% end %>
<% end %>