anchor.diff:          <tr>
             <td><%= order_promote.promote.name %></td>
             <td></td>
  +          <td></td>
  +          <td></td>
  +          <td></td>
             <td><%= order_promote.amount %></td>
             <td></td>
             <td></td>
           </tr>
         <% end %>
  +      <tr>
  +        <td>总价</td>
  +        <td></td>
  +        <td></td>
  +        <td></td>
  +        <td></td>
  +        <td><%= @order.subtotal %>(<%= @order.amount %>)</td>
  +        <td></td>
  +        <td></td>
  +      </tr>
       </table>
     </div>
   
  
positive.code:           <tr class="warning">
              <td><%= order_serve.serve.name %></td>
              <td></td>
              <td><%= order_serve.amount %></td>
              <td></td>
              <td></td>
            </tr>
  
negative.code:           <tr class="warning">
              <td><%= order_promote.promote.name %></td>
              <td></td>
              <td></td>
              <td></td>
              <td><span style="color: red;"><%= order_promote.amount %></span></td>
              <td></td>
              <td></td>
              <td></td>
            </tr>
  