增加Promotion字段

@@ -64,7 +64,6 @@ class CartData
         $param = Yohobuy::param();
         $param['method'] = 'app.Shopping.selected';
         $param['product_sku_list'] = $sku;
-
         if (!empty($uid)) {
             $param['uid'] = $uid;
         }

@@ -634,6 +634,7 @@ class Helpers
             $oneGoods['price'] = self::transPrice($value['last_vip_price']);
             $oneGoods['isVipPrice'] = $value['sales_price'] !== $value['last_vip_price'];
             $oneGoods['count'] = $value['buy_number'];
+            $oneGoods['promotion_id'] = $value['promotion_id'];
 
             if ($isValid) {
                 // 库存不足