app/views/role/show.html.erb
<h1> <%= _(@role.name) %></h1>
<h3> <%= _('Permissions') %> </h3>
<ul>
<% @role.permissions.each do |p| %>
<li> <%= permission_name(p) %> </li>
<% end %>
</ul>
<%= button_bar do %>
<%= button :edit, _('Edit'), :action => 'edit', :id => @role %>
<%= button :back, _('Back to roles management'), :action => 'index' %>
<% end %>