ecshop 模版商品详情页,不同商品调用不同模板

$smarty->display('goods.dwt',      $cache_id);

switch ($goods['cat_id']){
case 1:
$smarty->display('goods1.dwt',      $cache_id);
break;
case 2:
$smarty->display('goods2.dwt',      $cache_id);
break;
case 3:
$smarty->display('goods3.dwt',      $cache_id);
break;
case 4:
$smarty->display('goods4.dwt',      $cache_id);
break;
default:
$smarty->display('goods.dwt',      $cache_id);
break;
}