<%= form_for(group) do |f| %> <% if group.errors.any? %> <div id="error_explanation"> <h2><%= pluralize(group.errors.count, "error") %> prohibited this group from being saved:</h2> <ul> <% group.errors.full_messages.each do |message| %> <li><%= message %></li> <% end %> </ul> </div> <% end %> <div class="actions"> <%= f.submit %> </div> <% end %>