<%= form_for(:user, :url => { :action => 'update' }, :html => {:method => :put}) do %> <div class="box"> <% Group.all.sort.each do |group| %> <label><%= check_box_tag 'user[group_ids][]', group.id, @user.groups.include?(group) %> <%=h group %></label><br /> <% end %> <%= hidden_field_tag 'user[group_ids][]', '' %> </div> <%= submit_tag l(:button_save) %> <% end %>