Orbit/app/views/panel/users/_form.html.erb

<div id="select_user_roles">
  <% @user_role_models.each do |ua| %>
    <%= check_box_tag "user[active_roles][]", ua.key, (@user.active_roles.include?(ua.key) rescue false) %> <%= ua.i18n_variable[locale] %>
  <% end -%>
  <%= hidden_field_tag 'user[active_roles][]', '' %>
</div>

<div>
  <label><%= t('panel.my_avatar') %></label>
  <%= image_tag(@user.avatar.thumb.url) if @user.avatar? %>
  <%= file_field_tag 'file' %>
  <%= hidden_field_tag :avatar_cache %>
</div>

<div>
  <p>
    <%= f.label :email %>
    <%= f.text_field :email %>
  </p>
</div>

<% @user_role_models.each do |ua| %>
  <%= render :partial => 'user_role',
    :object => (@user.user_roles.detect {|u| u.key == ua.key } || @user.user_roles.build),
    :locals => {:ua => ua} %>
<% end -%>

<% content_for :page_specific_javascript do %>
<script type="text/javascript" charset="utf-8">
    $(document).ready(function(){
        $('#select_user_roles input').click(function(){
            $("#role_"+this.value).toggle();
        });
    });
</script>
<% end -%>