api-change

@@ -269,7 +269,7 @@ class shoppingModel extends global.yoho.BaseModel {
      */
     useCoupon(uid, couponCode) {
         let param = {
-            method: 'app.Shopping.useCoupon',
+            method: 'app.coupons.bindPCoupon',
             coupon_code: couponCode,
             uid
         };