购物车列表数量处理

pages/order_food/order_food.vue

@@ -302,7 +302,7 @@
 					backgroundColor: '#000000'
 				});
 			}
-			
+
 			this.countScrollTitle(e.scrollTop);
 		},
 		onLoad(e) {
@@ -369,7 +369,7 @@
 				if (res.code == 0) {
 					uni.cache.set('shopUser', res.data)
 					this.handlemessage() //监听websocket返回
-					// this.productqueryProduct() //list  数据
+					this.productqueryProduct() //list  数据
 				} else {
 					setTimeout(() => {
 						uni.pro.switchTab('index/index')
@@ -401,7 +401,7 @@
 						switch (msg.type) {
 							case 'sku': // sku  数量 查询这个商品的价格和数量
 								this.$set(this, 'amountcartNumber', msg.amount)
-								this.productqueryProduct() //list  数据
+								// this.productqueryProduct() //list  数据
 								break;
 							case 'clearCart':
 								this.cartLists = msg
@@ -427,8 +427,7 @@
 								break;
 							case 'addcart':
 								this.cartLists = msg
-								// console.log(msg, 1111)
-								this.productqueryProduct() //list  数据
+								// this.productqueryProduct() //list  数据
 								try {
 									if (msg.data.length != 0) {
 										let nums = 0
@@ -453,10 +452,35 @@
 								} catch (e) {
 									//TODO handle the exception
 								}
+								try {
+									// 处理购物车相同id的情况下  数量相加
+									var summedArray = msg.data.reduce((acc, current) => {
+										const existing = acc.find(item => item.productId === current.productId);
+										if (existing) {
+											existing.number += current.number;
+										} else {
+											acc.push({
+												...current
+											})
+										}
+										return acc;
+									}, []);
+									// 购物车总数据与列表页面互通
+									this.shopList.productInfo.forEach((item) => {
+										return item.products.filter(e => {
+											return summedArray.find(i => {
+												if (e.id == i.productId) {
+													e.cartNumber = i.number
+												}
+											})
+										})
+									})
+								} catch (e) {}
 								break;
 						}
-						// console.log(this.cartLists.data, 1111111)
+						// 判断是否显示购物车
 						this.cartListsdatashow = this.cartLists.data.length == 0 ? false : true
+
 					}
 				} catch (e) {
 					//TODO handle the exception
@@ -667,7 +691,7 @@
 				});
 			},
 			// 点击菜单商品滚动到指定为止
-			titleClickHandle(id,index) {
+			titleClickHandle(id, index) {
 				this.titleTopNumIndexFalg = false;
 				this.titleTopNumIndex = index;
 				uni.createSelectorQuery()
@@ -692,7 +716,7 @@
 			},
 			// 计算滚动到那个标题
 			countScrollTitle: _.throttle(function(top) {
-				
+
 				if (this.titleTopNums.length > 1 && this.titleTopNumIndexFalg) {
 					for (let i = 0; i <= this.titleTopNums.length - 1; i++) {
 						if (top >= this.titleTopNums[i] && top < this.titleTopNums[i + 1]) {
@@ -704,7 +728,7 @@
 					}
 				}
 				//这里必须要每次滚动前 清除一次
-				clearTimeout(this.timer) 
+				clearTimeout(this.timer)
 				// 如果停留则表示滚动结束  一旦空了1s就判定为滚动结束
 				this.timer = setTimeout(() => {
 					this.titleTopNumIndexFalg = true;
@@ -719,7 +743,7 @@
 						.select(`#title${i.id}`)
 						.boundingClientRect((res) => {
 							topNums.push(res.top - this.menuInfo.top - this.menuInfo.height - this
-								.paddingBtmSize*8 - 
+								.paddingBtmSize * 8 -
 								this.tabHeadHeight + 40);
 						})
 						.exec();