modify cart number

@@ -190,5 +190,38 @@ exports.toggleSelectGoods = (req, res) => {
     });
 };
 
+// 购物车商品选择与取消选择
+exports.modifyProductNum = (req, res) => {
+    const uid = req.cookies.uid;
+    const shoppingKey = req.cookies._SPK;
+    const changeType = req.body.changeType;
+    const changeNum = req.body.changeNum;
+    const sku = req.body.sku;
+
+    let params = {
+        uid,
+        shoppingKey,
+        sku
+    };
+
+    if(changeType === 'INCREASE') {
+        _.merge(params, {
+            increaseNum: changeNum
+        });
+    } else if(changeType === 'DECREASE') {
+        _.merge(params, {
+            decreaseNum: changeNum
+        });
+    } else {
+        // TODO
+        // CHANGE
+    }
+
+    cartModel.modifyProductNum(params).then(result => {
+        res.json(_.merge(cartModel.filterCartData(result, uid), {code: result.code}));
+    });
+
+}
+
 
 

@@ -263,11 +263,68 @@ const filterCartData = (result, uid) => {
     });
 };
 
+/**
+ * 增减购物车商品数量
+ * @function modifyProductNum
+ * @param { Number } uid 用户ID
+ * @param { String } sku 商品SKU
+ * @param { Number } increaseNum 增加的数目
+ * @param { Number } decreaseNum 减少的数目
+ * @param { String } shoppingKey 未登录用户唯一识别码
+ * @return { Array } 接口返回的数据
+ */
+const modifyProductNum = (options) => {
+    const increaseNum = options.increaseNum;
+    const decreaseNum = options.decreaseNum;
+    const uid = options.uid;
+    const shoppingKey = options.shoppingKey;
+    const sku = options.sku;
+
+    let params = {
+        product_sku: options.sku
+    }
+
+    // 增加
+    if(increaseNum) {
+        _.merge(params, {
+            method: 'app.Shopping.increase',
+            increase_number: parseInt(increaseNum, 10)
+        });
+    }
+
+    // 减少
+    if(decreaseNum) {
+        _.merge(params, {
+            method: 'app.Shopping.decrease',
+            decrease_number: parseInt(decreaseNum, 10)
+        });
+    }
+
+    if(uid) {
+        _.merge(params, {uid});
+    }
+
+    if(shoppingKey) {
+        _.merge(params, {
+            shopping_key: shoppingKey
+        });
+    }
+
+    if(sku) {
+      _.merge(params, {
+            product_sku: sku
+      });
+    }
+
+    return api.get('', params);
+}
+
 module.exports = {
     addToCart,
     getCartData,
     transferToFavorite,
     toggleSelectGoods,
     removeGoods,
-    filterCartData
+    filterCartData,
+    modifyProductNum
 };

@@ -12,11 +12,7 @@
 
     API使用:
 
-        var address = cascadingAddress({
-            el: '#address',
-            url: 'http://localhost:3000/areas/0',
-            resource: 'areas'
-        });
+        var address = cascadingAddress({el: '#address'});
 
     获取选择地址文本: