UNIAPP实战项目笔记68 购物车勾选到订单确认

Love The Way You Lie 2024-03-22 15:33 17阅读 0赞

## UNIAPP实战项目笔记68 购物车勾选到订单确认 ##

### 思路 ###

> 需要用到vuex  
> 页面间传值

### 案例截图 ###

订单结算页面  
![a72322a8b05b4df699653a2f06abe159.png][]  
购物车页面  
![在这里插入图片描述][d4029784709f48d2b42d49ad8f26be62.png]  
确认订单页面  
![在这里插入图片描述][f5ba92e058a742f2849714af7986befc.png]  
支付页面

### 代码 ###

#### 前端代码 购物车页面 shopcart.vue ####

<template>
            <view class="shop-cart">
                <template v-if=" list.length > 0 ">
                        
                    
                    <uniNavBar
                        title="购物车"
                        :rightText=" isNavBar ? '完成' : '编辑'"
                        fixed="true"
                        statusBar="true"
                        @clickRight=" isNavBar = !isNavBar"
                    ></uniNavBar>
                    
                    
                    <view class="shop-item" v-for="(item,index) in list" :key="index">
                        <label for="" class="radio" @tap="selectedItem(index)">
                            <radio value="" color="#FF3333" :checked="item.checked" /> <text></text>
                        </label>
                        <image class="shop-img" :src="item.imgUrl" mode=""></image>
                        <view class="shop-text">
                            <view class="shop-name">
                                {
        {
        item.name}}
                            </view>
                            <view class="shop-color f-color">
                                {
        {
        item.color}}
                            </view>
                            <view class="shop-price">
                                <view class="">
                                    ￥{
        {
        item.pprice}}
                                </view>
                                <template v-if="!isNavBar">
                                    <view>x {
        {
        item.num}}</view>
                                </template>
                                <template v-else>
                                    <uniNumberBox
                                        :value="item.num"
                                        :min=1
                                        @change="changeNumber($event,index,item)"
                                    ></uniNumberBox>
                                </template>
                            </view>
                        </view>
                    </view>
                    
                    <view class="shop-foot">
                        <label for="" class="radio foot-radio" @tap='checkedAllFn'>
                            <radio value="" color="#FF3333" :checked="checkedAll"></radio><text>全选</text>
                        </label>
                        <template v-if="!isNavBar">
                            <view class="foot-total">
                                <view class="foot-count">
                                    合计：
                                    <text class="f-active-color">
                                        ￥{
        {
        totalCount.pprice}}
                                    </text>
                                </view>
                                <view class="foot-num" @tap="goConfirmOrder">
                                    结算({
        {
        totalCount.num}})
                                </view>
                            </view>
                        </template>
                        <template v-else>
                            <view class="foot-total">
                                <view class="foot-num" style="background-color: black;">
                                    移入收藏夹
                                </view>
                                <view class="foot-num" @tap="delGoodsFn">
                                    删除
                                </view>
                            </view>
                        </template>
                    </view>
                    
                </template>
                <template v-else>
                    <uniNavBar 
                        title="购物车"
                        fixed="true"
                        statusBar="true"
                    ></uniNavBar>
                    <view class="shop-else-list">
                        <text>囧~ 购物车还是空的~</text>
                    </view>
                </template>
                <Tabbar currentPage='shopcart'></Tabbar>
            </view>
        </template>
    
        <script>
            import $http from '@/common/api/request.js'
            import uniNavBar from '@/components/uni/uni-nav-bar/uni-nav-bar.vue'
            import uniNumberBox from '@/components/uni/uni-number-box/uni-number-box.vue'
            import Tabbar from '@/components/common/Tabbar.vue';//引入
            
            // 状态机引入
            import {
        mapState,mapActions,mapGetters,mapMutations} from 'vuex'
            export default {
        
                data() {
        
                    return {
        
                        isNavBar:false,
                    }
                },
                computed:{
        
                    // 状态机数据处理
                    ...mapState({
        
                        list:state=>state.cart.list,
                        selectedList:state=>state.cart.selectedList,
                    }),
                    ...mapGetters(['checkedAll','totalCount'])
                },
                components:{
        
                    uniNavBar,uniNumberBox,Tabbar
                },
                onShow() {
        
                  this.getData();  
                },
                methods: {
        
                    ...mapActions(['checkedAllFn','delGoodsFn']),
                    ...mapMutations(['selectedItem','initGetData']),
                    getData(){
        
                        $http.request({
        
                            url:'/selectCart',
                            method:"POST",
                            header:{
        
                                token:true
                            }
                        }).then((res)=>{
        
                            this.initGetData(res)
                        }).catch(()=>{
        
                            uni.showToast({
        
                            title:'请求失败',
                            icon:'none'
                            })
                        })
                    },
                    changeNumber(value,index,item){
        
                        if ( value == item.num ) return;
                        $http.request({
        
                            url:'/updateCart',
                            method:"POST",
                            header:{
        
                                token:true
                            },
                            data:{
        
                                goodsId:item.goods_id,
                                num:value
                            }
                        }).then((res)=>{
        
                            this.list[index].num = value;
                        }).catch(()=>{
        
                            uni.showToast({
        
                            title:'请求失败',
                            icon:'none'
                            })
                        })
                    },
                    // 进入确认订单
                    goConfirmOrder(){
        
                        if(this.selectedList.length === 0){
        
                            return uni.showToast({
        
                                title:"至少选择一件商品",
                                icon:"none"
                            })
                        }
                        uni.navigateTo({
        
                            url:`/pages/confirm-order/confirm-order?detail=${
          JSON.stringify(this.selectedList)}`
                        })
                    }
                }
            }
        </script>
    
        <style lang="scss">
    
        .shop-list{
        
            padding-bottom: 100rpx;
        }
        .shop-else-list{
        
            position: absolute;
            left: 0;
            top: 0;
            right: 0;
            bottom: 0;
            background-color: #f7f7f7;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .shop-item{
        
            display: flex;
            padding: 20rpx;
            align-items: center;
            background-color: #f7f7f7;
            margin-bottom: 10rpx;
        }
        .shop-img{
        
            width: 200rpx;
            height: 200rpx;
        }
        .shop-text{
        
            flex: 1;
            padding-left: 20rpx;
        }
        .shop-color{
        
            font-size: 24rpx;
        }
        .shop-price{
        
            display: flex;
            justify-content: space-between;
        }
    
        .shop-foot{
        
            border-top: 2rpx solid #f7f7f7;
            background-color: #FFFFFF;
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 100rpx;
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 120rpx;
        }
        .foot-radio{
        
            padding-left: 20rpx;
        }
        .foot-total{
        
            display: flex;
        }
        .foot-count{
        
            line-height: 100rpx;
            padding: 0 20rpx;
            font-size: 32rpx;
        }
        .foot-num{
        
            background-color: #49bdfb;
            color: #FFFFFF;
            padding: 0 60rpx;
            line-height: 100rpx;
        }
        </style>

#### 确认订单页面代码 comfirm-order.vue ####

<template>
        <view class="confirm-order bg-active-color">
            <Lines></Lines>
            
            
            <view class="order-map" @tap="goPathList">
                <block v-if="path">
                    <view class="map-title">
                        <view class="map-name">收件人:{
        {
        path.name}}</view>
                        <view class="">{
        {
        path.tel}}</view>
                    </view>
                    <view class="map-add">
                        收货地址:{
        {
        path.city}} {
        {
        path.detail}}
                    </view>
                </block>
                <block v-else>
                    <view class="map-title">
                        <view class="map-name">请选择地址</view>
                    </view>
                </block>
                
            </view>
            
            
            <view class="goods-list" v-for="(item,index) in goodsList" :key="index">
                    
                <view class="goods-content bg-active-color">
                    <image class="goods-img" :src="item.imgUrl" mode=""></image>
                    <view class="goods-text">
                        <view class="goods-name">
                            {
        {
        item.name}}
                        </view>
                        <view class="goods-size f-color">
                            颜色分类:黑色
                        </view>
                        <view class="f-active-color">
                            7天无理由
                        </view>
                    </view>
                    <view class="">
                        <view class="">
                             ￥{
        {
        item.pprice}}
                        </view>
                        <view class="goods-size">
                            x {
        {
        item.num}}
                        </view>
                    </view>
                </view>
                
            </view>
        
            
            <view class="order-foot">
                <view class="total-price">
                    合计: <text class="f-active-color">${
        {
        totalCount.pprice}}</text>
                </view>
                <view class="confirm" @tap="goPayment">
                    提交订单
                </view>
            </view>
        </view>
    </template>
    
    <script>
        import Lines from '@/components/common/Lines.vue'
        import {
        mapGetters,mapState} from 'vuex'
        export default {
        
            data() {
        
                return {
        
                    path:false
                };
            },
            computed:{
        
                ...mapState({
        
                    list:state=>state.cart.list
                }),
                ...mapGetters(['defaultPath','totalCount']),
                // 根据商品列表找到对应的e.detail 数据的 id 最终返回商品数据
                goodsList(){
        
                    return this.item.map(id=>{
        
                        return this.list.find(v=>v.id == id)
                    })
                }
            },
            onLoad(e) {
        
                console.log(e.detail,this.list);
                // 选中的商品id集合 [1,3]
                this.item = JSON.parse(e.detail);
                
                // 如果默认地址的一个赋值
                if(this.defaultPath.length){
        
                    this.path = this.defaultPath[0];
                }
                
                // 如果出发自定义事件,on去接收值
                uni.$on('selectPathItem',(res)=>{
        
                    // console.log(res);
                    this.path = res;
                })
            },
            onUnload() {
        
              uni.$off('selectPathItem',()=>{
        
                  console.log('移除了selectPathItem');
              })  
            },
            components:{
        
                Lines
            },
            methods:{
        
                // 跳转到地址管理页面
                goPathList(){
        
                    uni.navigateTo({
        
                        url:'/pages/my-path-list/my-path-list?type=selectedPath'
                    })
                },
                // 确认支付
                goPayment(){
        
                    uni.navigateTo({
        
                        url:'/pages/payment/payment'
                    })
                }
            }
        }
    </script>
    
    <style lang="less">
    .confirm-order{
        
        position: absolute;
        left: 0;
        top: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        height: 100%;
    }
    .order-map{
        
        margin-bottom: 10rpx;
        padding: 20rpx;
        background-color: #fff;
        line-height: 50rpx;
    }
    .map-title{
        
        display: flex;
        justify-content: space-between;
    }
    .map-name{
        
        font-weight: bold;
    }
    .goods-list{
        
        background-color: #fff;
        padding: 10rpx 0;
    }
    
    .goods-content{
        
        padding: 10rpx 20rpx;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .goods-text{
        
        width: 360rpx;
        padding: 0 10rpx;
        font-size: 26rpx;
    }
    .goods-img{
        
        width: 160rpx;
        height: 160rpx;
    }
    .goods-size{
        
        font-size: 24rpx;
    }
    
    .order-foot{
        
        width: 100%;
        height: 80rpx;
        position: fixed;
        bottom: 0;
        left: 0;
        background-color: #fff;
        display: flex;
        justify-content: flex-end;
        align-items: center;
    }
    .confirm{
        
        color: #fff;
        background-color: #49bdfb;
        padding: 10rpx 30rpx;
    }
    .total-price{
        
        padding: 0 20rpx;
    }
    
    
    </style>

#### vuex 下的 cart.js ####

export default{
        
        state:{
        
            list:[
                    /* {
                        id:1,
                        name:"332经济法能聚聚会技能大赛 经济法能聚聚会技能大赛",
                        color:"颜色：嘿嘿嘿激活",
                        imgUrl:"../../static/logo.png",
                        pprice:"27",
                        num:1,
                        checked:false
                    },{
                        id:2,
                        name:"032经济法能聚聚会技能大赛 经济法能聚聚会技能大赛",
                        color:"颜色：嘿嘿嘿激活",
                        imgUrl:"../../static/logo.png",
                        pprice:"48",
                        num:6,
                        checked:false
                    } */
                ],
            selectedList:[]
            
        },
        getters:{
        
            // 判断是否 全选
            checkedAll(state){
        
                return state.list.length === state.selectedList.length;
            },
            // 合计 结算数量
            totalCount(state){
        
                let total = {
        
                    pprice:0,
                    num:0
                }
                state.list.forEach(v=>{
        
                    // 是否选中
                    if(state.selectedList.indexOf(v.id) > -1){
        
                        // 合计
                        total.pprice += v.pprice*v.num;
                        // 结算数量
                        total.num = state.selectedList.length;
                    }
                })            
                
                return total;
            }
        },
        mutations:{
        
            // 请求到数据赋值操作
            initGetData(state,list){
        
                state.list = list;
            },
            // 全选
            checkAll(state){
        
                state.selectedList = state.list.map(v=>{
        
                    v.checked = true;
                    return v.id;
                })
            },
            // 全不选
            unCheckAll(state){
        
                state.list.forEach(v=>{
        
                    v.checked = false;
                })
                state.selectedList = [];
            },
            // 单选
            selectedItem(state,index){
        
                let id = state.list[index].id;
                let i = state.selectedList.indexOf(id);
                // 如果selectList已经存在就代表他之前的选中状态,checked=false,并且在selectedList删除
                if (i>-1) {
        
                    state.list[index].checked = false;
                    return state.selectedList.splice(i,1);
                }
                // 如果之前没有选中,checked=true,把当前的id添加到selectedList
                state.list[index].checked = true;
                state.selectedList.push(id);
            },
            // 
            delGoods(state){
        
                state.list = state.list.filter(v=>{
        
                    return state.selectedList.indexOf(v.id) === -1;
                })
            },
            // 加入购物车
            addShopCart(state, goods){
        
                state.list.push(goods);
            }
        },
        actions:{
        
            checkedAllFn({
         commit,getters}){
        
                getters.checkedAll ? commit("unCheckAll") : commit("checkAll")
            },
            delGoodsFn({
         commit}){
        
                commit('delGoods');
                commit("unCheckAll");
                uni.showToast({
        
                    title:'删除成功',
                    icon:"none"
                })
            }
        }
    }

#### 目录结构 ####

##### 前端目录结构 #####

*  manifest.json 配置文件： appid、logo…
 *  pages.json 配置文件： 导航、 tabbar、 路由
 *  
 *  main.js vue初始化入口文件
 *  App.vue 全局配置：样式、全局监视
 *  static 静态资源：图片、字体图标
 *  page 页面
    
     *  index
        
         *  index.vue
     *  list
        
         *  list.vue
     *  my
        
         *  my.vue
     *  my-config
        
         *  my-config.vue
     *  my-config
        
         *  my-config.vue
     *  my-add-path
        
         *  my-add-path.vue
     *  my-path-list
        
         *  my-path-list.vue
     *  search
        
         *  search.vue
     *  search-list
        
         *  search-list.vue
     *  shopcart
        
         *  shopcart.vue
     *  details
        
         *  details.vue
     *  my-order
        
         *  my-order.vue
     *  confirm-order
        
         *  confirm-order.vue
     *  payment
        
         *  payment.vue
     *  payment-success
        
         *  payment-success.vue
     *  login
        
         *  login.vue
     *  login-tel
        
         *  `login-tel.vue`
     *  login-code
        
         *  `login-code.vue`
 *  components 组件
    
     *  index
        
         *  Banner.vue
         *  Hot.vue
         *  Icons.vue
         *  indexSwiper.vue
         *  Recommend.vue
         *  Shop.vue
         *  `Tabbar.vue`
     *  common
        
         *  Card.vue
         *  Commondity.vue
         *  CommondityList.vue
         *  Line.vue
         *  ShopList.vue
     *  order
        
         *  order-list.vue
     *  uni
        
         *  uni-number-box
            
             *  uni-number-box.vue
         *  uni-icons
            
             *  uni-icons.vue
         *  uni-nav-bar
            
             *  uni-nav-bar.vue
         *  mpvue-citypicker
            
             *  mpvueCityPicker.vue
 *  common 公共文件：全局css文件 || 全局js文件
    
     *  api
        
         *  request.js
     *  common.css
     *  uni.css
 *  store vuex状态机文件
    
     *  modules
        
         *  cart.js
         *  path.js
         *  user.js
     *  index.js

[a72322a8b05b4df699653a2f06abe159.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/18/ad63ffba65aa43f59ff9a3935f29cc67.png
[d4029784709f48d2b42d49ad8f26be62.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/18/08a37ea5d7784680a5b6d585120f4e62.png
[f5ba92e058a742f2849714af7986befc.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/18/cc13136ae61b4b038e1303694139c913.png