ecshop增加直接购买的功能

今天在公司用ECSHOP做电子商务系统的修改,牵涉到修改购物流程。既要实现可以放在购物车里面,也可以实现直接购买,就是购买方式共存的两种方式。
1:需要在goods.dwt模板中增加一个直接购买的按扭.
<ahref="javascript:addToCart1({$goods.goods_id})">直接购买</a>
2:在common.js增加直接购买的js
/* *
 * 直接购买
 */
function addToCart1(goodsId, parentId)
{
  var goods        = new Object();
  var spec_arr     = new Array();
  var fittings_arr = new Array();
  var number       = 1;
  var formBuy      = document.forms['ECS_FORMBUY'];
  // 检查是否有商品规格
  if (formBuy)
  {
 spec_arr = getSelectedAttributes(formBuy);
 if (formBuy.elements['number'])
 {
  number = formBuy.elements['number'].value;
 }
  }
  goods.spec     = spec_arr;
  goods.goods_id = goodsId;
  goods.number   = number;
  goods.parent   = (typeof(parentId) == "undefined") ? 0 : parseInt(parentId);
  Ajax.call('flow.php?step=add_to_cart1', 'goods=' + goods.toJSONString(), addToCartResponse1, 'POST', 'JSON');
}
 
3:在common.js增加返回ajax值的js
 
function addToCartResponse1(result)
{
  if (result.error > 0)
  {
 // 如果需要缺货登记，跳转
 if (result.error == 2)
 {
  if (confirm(result.message))
  {
  location.href = 'user.php?act=add_booking&id=' + result.goods_id;
  }
 }
 // 没选规格，跳到商品详情页
 else if (result.error == 9)
 {
  location.href = 'goods.php?id=' + result.goods_id;
 }
 else
 {
  location.href = "flow.php";
 }
  }
  else
  {
 var cartInfo = document.getElementById('ECS_CARTINFO');
 if (cartInfo)
 {
  cartInfo.innerHTML = result.content;
 }
   location.href = "flow.php";
  
  }
}
 
4:在flow.php中增加直接购买的代码
 
 
elseif ($_REQUEST['step'] == 'add_to_cart1'){
  include_once('includes/cls_json.php');
 if (!empty($_REQUEST['goods_id']) && empty($_POST['goods']))
 {
  if (!is_numeric($_REQUEST['goods_id']) || intval($_REQUEST['goods_id']) <= 0)
  {
   header("location:./\n");
  }
  $goods_id = intval($_REQUEST['goods_id']);
  exit;
 }
 $result = array('error' => 0, 'message' => '', 'content' => '', 'goods_id' => '');
 $json  = new JSON;
 if (empty($_POST['goods']))
 {
  $result['error'] = 1;
  die($json->encode($result));
 }
 $goods = $json->decode($_POST['goods']);
  
 if (empty($goods->spec))
 {
  $sql = "SELECT COUNT(*) " .
    "FROM " . $ecs->table('goods_attr') . " AS ga, " .
       $ecs->table('attribute') . " AS a " .
    "WHERE ga.attr_id = a.attr_id " .
    "AND ga.goods_id = '" . $goods->goods_id . "' " .
    "AND a.attr_type = 1";
  if ($db->getOne($sql) > 0)
  {
   $result['error']   = 9;
   $result['goods_id'] = $goods->goods_id;
   die($json->encode($result));
  }
 }
  
 if ($_CFG['one_step_buy'] == '1')
 {
  clear_cart();
 }
 else
 {
  if (cart_goods_exists($goods->goods_id, $goods->spec, CART_GENERAL_GOODS))
  {
   // 商品已经存在于购物车中，返回错误信息
   $result['error']   = 1;
   $result['message'] = $_LANG['goods_exists'];
   die($json->encode($result));
  }
 }
  
 if (!is_numeric($goods->number) || intval($goods->number) <= 0)
 {
  $result['error']   = 1;
  $result['message'] = $_LANG['invalid_number'];
 }
 else
 {
  
  if (addto_cart($goods->goods_id, $goods->number, $goods->spec, $goods->parent))
  {
   if ($_CFG['cart_confirm'] > 2)
   {
    $result['message'] = '';
   }
   else
   {
    $result['message'] = $_CFG['cart_confirm'] == 1 ? $_LANG['addto_cart_success_1'] : $_LANG['addto_cart_success_2'];
   }
   $result['content'] = insert_cart_info();
   $result['one_step_buy'] = $_CFG['one_step_buy'];
  }
  else
  {
   $result['message']  = $err->last_message();
   $result['error']    = $err->error_no;
   $result['goods_id'] = stripslashes($goods->goods_id);
  }
 }
 $result['confirm_type'] = 4;
 die($json->encode($result));
}
最后你就能发现,这个站可以有两种购买方式共存,一种是直接购买，还有一种就是放在购物车里面。