gistfile1.rb

<%= f.fields_for :roles do |r| %>
          <tr class="form_line">
            <td class="form_head">
              <%= r.char.name %>
            </td>
            <td class="char_role_td">
            </td>
          </tr>
 <% end %>

#A role belongs to a char and a char has a name attribute.