ecshop商品分类页怎么实现自定义title

ALTER TABLE `ecs_category` ADD `cat_title` VARCHAR( 255 ) NOT NULL AFTER `cat_desc` ;

<tr>
  <td class="label">{$lang.keywords}:</td>
  <td><input type="text" name="keywords" value='{$cat_info.keywords}' size="50">
  </td>
</tr>

<tr>
  <td class="label">自定义TITLE:</td>
  <td>
   <input type="text" name="cat_title" value='{$cat_info.cat_title}' size="50">
  </td>
</tr>

$cat['cat_desc'] = !empty($_POST['cat_desc']) ? $_POST['cat_desc']: '';

$cat['cat_title'] = !empty($_POST['cat_title']) ? $_POST['cat_title']: '';

return $GLOBALS['db']->getRow('SELECT cat_name, keywords, cat_desc, style, grade, filter_attr, parent_id FROM ' . $GLOBALS['ecs']->table('category') .

return $GLOBALS['db']->getRow('SELECT cat_name, cat_title, keywords, cat_desc, style, grade, filter_attr, parent_id FROM ' . $GLOBALS['ecs']->table('category') .

$smarty->assign('page_title', $position['title']);

$smarty->assign('page_title', $cat['cat_title']);