【学习打卡】第12天 【2022版】Vue3 系统入门与项目实战第十二讲

课程名称： 2022持续升级 Vue3 从入门到实战 掌握完整知识体系

课程章节： 核心购物链路开发

主讲老师： Dell

课程内容：

今天学习的内容包括：
如何开发核心购物的链路

课程收获：

src/views/orderConfirmation/Order.vue

<template>
  <div class="order">
    <div class="order__price">实付金额 <b>¥{{calculations.price}}</b></div>
    <div class="order__btn" @click="() => handleShowConfirmChange(true)">提交订单</div>
  </div>
  <div
    class="mask"
    v-show="showConfirm"
    @click="() => handleShowConfirmChange(false)"
  >
    <div class="mask__content" @click.stop>
      <h3 class="mask__content__title">确认要离开收银台？</h3>
      <p class="mask__content__desc">请尽快完成支付，否则将被取消</p>
      <div class="mask__content__btns">
        <div
          class="mask__content__btn mask__content__btn--first"
          @click="() => handleConfirmOrder(true)"
        >取消订单</div>
        <div
          class="mask__content__btn mask__content__btn--last"
          @click="() => handleConfirmOrder(false)"
        >确认支付</div>
      </div>
    </div>
  </div>
</template>

<script>
import { ref } from 'vue'
import { useRouter, useRoute } from 'vue-router'
import { useStore } from 'vuex'
import { post } from '../../utils/request'
import { useCommonCartEffect } from '../../effects/cartEffects'

// 下单相关逻辑
const useMakeOrderEffect = (shopId, shopName, productList) => {
  const router = useRouter()
  const store = useStore()

  const handleConfirmOrder = async (isCanceled) => {
    const products = []
    for(let i in productList.value) {
      const product = productList.value[i]
      products.push({id: parseInt(product._id, 10), num: product.count})
    }
    try {
      const result = await post('/api/order', {
        addressId: 1,
        shopId,
        shopName: shopName.value,
        isCanceled,
        products
      })
      if (result?.errno === 0) {
        store.commit('clearCartData', shopId)
        router.push({ name: 'OrderList' })
      } 
    } catch (e) {
      // 提示下单失败
    }
  }
  return { handleConfirmOrder }
}

// 蒙层展示相关的逻辑
const useShowMaskEffect = () => {
  const showConfirm = ref(false)
  const handleShowConfirmChange = (status) => {
    showConfirm.value = status
  }
  return { showConfirm, handleShowConfirmChange }
}

export default {
  name: 'Order',
  setup() {
    const route = useRoute()
    const shopId = parseInt(route.params.id, 10)
    const { calculations, shopName, productList } = useCommonCartEffect(shopId)
    const { handleConfirmOrder } = useMakeOrderEffect(shopId, shopName, productList)
    const { showConfirm, handleShowConfirmChange } = useShowMaskEffect()
    return { showConfirm, handleShowConfirmChange, calculations, handleConfirmOrder }
  }
}
</script>

<style lang="scss" scoped>
@import '../../style/viriables.scss';
.order {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  height: .49rem;
  line-height: .49rem;
  background: $bgColor;
  &__price {
    flex: 1;
    text-indent: .24rem;
    font-size: .14rem;
    color: $content-fontcolor;
  }
  &__btn {
    width: .98rem;
    background: #4FB0F9;
    color: #fff;
    text-align: center;
    font-size: .14rem;
  }
}
.mask {
  z-index: 1;
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  top: 0;
  background: rgba(0,0,0,0.50);
  &__content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 3rem;
    height: 1.56rem;
    background: #FFF;
    text-align: center;
    border-radius: .04rem;
    &__title {
      margin: .24rem 0 0 0;
      line-height: .26rem;
      font-size: .18rem;
      color: #333;
    }
    &__desc {
      margin: .08rem 0 0 0;
      font-size: .14rem;
      color: #666666;
    }
    &__btns {
      display: flex;
      margin: .24rem .58rem;
    }
    &__btn {
      flex: 1;
      width: .8rem;
      line-height: .32rem;
      border-radius: .16rem;
      font-size: .14rem;
      &--first {
        margin-right: .12rem;
        border: .01rem solid #4FB0F9;
        color: #4FB0F9;
      }
      &--last {
        margin-left: .12rem;
        background: #4FB0F9;
        color: #fff;
      }
    }
  }
}
</style>

src/views/orderConfirmation/OrderConfirmation.vue

<template>
  <div class="wrapper">
    <TopArea />
    <ProductList />
    <Order />
  </div>
</template>

<script>
import TopArea from './TopArea'
import ProductList from './ProductList'
import Order from './Order'
export default {
  name: 'OrderConfirmation',
  components: { TopArea, ProductList, Order },
}
</script>

<style lang="scss" scoped>
.wrapper {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  background-color: #eee;
  overflow-y: scroll;
}
</style>

src/views/orderConfirmation/ProductList.vue

<template>
<div class="products">
  <div class="products__title">
    {{shopName}}
  </div>
  <div class="products__wrapper">
    <div class="products__list">
      <div
        v-for="item in productList"
        :key="item._id"
        class="products__item"
      >
        <img class="products__item__img" :src="item.imgUrl" />
        <div class="products__item__detail">
          <h4 class="products__item__title">{{item.name}}</h4>
          <p class="products__item__price">
            <span>
              <span class="products__item__yen">&yen; </span>
              {{item.price}} x {{item.count}}
            </span>
            <span class="products__item__total">
              <span class="products__item__yen">&yen; </span>
              {{(item.price * item.count).toFixed(2)}}
            </span>
          </p>
        </div>
      </div>
    </div>
  </div>
</div>
</template>

<script>
import { useRoute } from 'vue-router'
import { useCommonCartEffect } from '../../effects/cartEffects'
export default {
  name: 'ProductList',
  setup() {
    const route = useRoute()
    const shopId = route.params.id
    const { shopName, productList } = useCommonCartEffect(shopId)
    return { shopName, productList }
  }
}
</script>

<style lang="scss" scoped>
@import '../../style/viriables.scss';
@import '../../style/mixins.scss';
.products {
  margin: .16rem .18rem .1rem .18rem;
  background: $bgColor;
  &__title {
    padding: .16rem;
    font-size: .16rem;
    color: $content-fontcolor;
  }
  &__wrapper {
    overflow-y: scroll;
    margin: 0 .18rem;
    position: absolute;
    left: 0;
    right: 0;
    bottom: .6rem;
    top: 2.6rem;
  }
  &__list {
    background: $bgColor;
  }
  &__item {
    position: relative;
    display: flex;
    padding: 0 .16rem 0.16rem .16rem;
    &__img {
      width: .46rem;
      height: .46rem;
      margin-right: .16rem;
    }
    &__detail {
      flex: 1;
    }
    &__title {
      margin: 0;
      line-height: .2rem;
      font-size: .14rem;
      color: $content-fontcolor;
      @include ellipsis;
    }
    &__price {
      display: flex;
      margin: .06rem 0 0 0;
      line-height: .2rem;
      font-size: .14rem;
      color: $hightlight-fontColor;
    }
    &__total {
      flex: 1;
      text-align: right;
      color: $dark-fontColor;
    }
    &__yen {
      font-size: .12rem;
    }
  }
}
</style>

src/views/orderConfirmation/TopArea.vue

<template>
  <div class="top">
      <div class="top__header">
        <div
          class="iconfont top__header__back"
          @click="handleBackClick"
        >&#xe6f2;</div>
        确认订单
      </div>
      <div class="top__receiver">
        <div class="top__receiver__title">收货地址</div>
        <div class="top__receiver__address">北京理工大学国防科技园2号楼10层</div>
        <div class="top__receiver__info">
          <span class="top__receiver__info__name">瑶妹（先生）</span>
          <span class="top__receiver__info__name">18911024266</span>
        </div>
        <div class="iconfont top__receiver__icon">&#xe6f2;</div>
      </div>
    </div>
</template>

<script>
import { useRouter } from 'vue-router'
export default {
  name: 'TopArea',
  setup() {
    const router = useRouter()
    const handleBackClick = () => { router.back() }
    return { handleBackClick }
  }
}
</script>

<style lang="scss" scoped>
@import '../../style/viriables.scss';
.top {
  position: relative;
  height: 1.96rem;
  background-size: 100% 1.59rem;
  background-image: linear-gradient(0deg, rgba(0,145,255,0.00) 4%, #0091FF 50%);
  background-repeat: no-repeat;
  &__header {
    position: relative;
    padding-top: .26rem;
    line-height: .24rem;
    color: $bgColor;
    text-align: center;
    font-size: .16rem;
    &__back {
      position: absolute;
      left: .18rem;
      font-size: .22rem;
    }
  }
  &__receiver {
    position: absolute;
    left: .18rem;
    right: .18rem;
    bottom: 0;
    height: 1.11rem;
    background: $bgColor;
    border-radius: .04rem;
    &__title {
      line-height: .22rem;
      padding: .16rem 0 .14rem .16rem;
      font-size: .16rem;
      color: $content-fontcolor;
    }
    &__address {
      line-height: .2rem;
      padding: 0 .4rem 0 .16rem;
      font-size: .14rem;
      color: $content-fontcolor;
    }
    &__info {
      padding: .06rem 0 0 .16rem;
      &__name {
        margin-right: .06rem;
        line-height: .18rem;
        font-size: .12rem;
        color: $medium-fontColor;
      }
    }
    &__icon {
      transform: rotate(180deg);
      position: absolute;
      right: .16rem;
      top: .5rem;
      color: $medium-fontColor;
      font-size: .2rem;
    }
  }
}
</style>

src/effects/cartEffects.js

import { computed } from 'vue'
import { useStore } from 'vuex'
// 购物车相关逻辑
export const useCommonCartEffect = (shopId) => {
  const store = useStore()
  const cartList = store.state.cartList;
  const changeCartItemInfo = (shopId, productId, productInfo, num) => {
    store.commit('changeCartItemInfo', {
      shopId, productId, productInfo, num
    })
  }
  
  const productList = computed(() => {
    const productList = cartList[shopId]?.productList || {}
    const notEmptyProductList = {}
    for(let i in productList) {
      const product = productList[i]
      if(product.count > 0 ) {
        notEmptyProductList[i] = product
      }
    }
    return notEmptyProductList
  })

  const shopName = computed(() => {
    const shopName = cartList[shopId]?.shopName || ''
    return shopName
  })

  const calculations = computed(() => {
    const productList = cartList[shopId]?.productList
    const result = { total: 0, price: 0, allChecked: true}
    if(productList) {
       for(let i in productList) {
         const product = productList[i]
         result.total += product.count
         if(product.check) {
           result.price += (product.count * product.price)
         }
         if(product.count > 0 && !product.check) {
           result.allChecked = false
         }
      }
    }
    result.price = result.price.toFixed(2)
    return result
  })

  return { cartList, shopName, productList, calculations, changeCartItemInfo }
}

src/compnents/Docker.vue

<template>
  <div class="docker">
    <div
      v-for="(item, index) in dockerList"
      :class="{'docker__item': true, 'docker__item--active': index === currentIndex}"
      :key="item.icon"
    >
      <router-link :to='item.to'>
        <div class="iconfont" v-html="item.icon" />
        <div class="docker__title">{{item.text}}</div>
      </router-link>
    </div>
  </div>
</template>

<script>
export default {
  name: 'Docker',
  props: ['currentIndex'],
  setup() {
    const dockerList = [
      {icon: '&#xe6f3;', text: '首页', to: {name: 'Home'}},
      {icon: '&#xe7e5;', text: '购物车', to: {name: 'CartList'}},
      {icon: '&#xe61e;', text: '订单', to: {name: 'OrderList'}},
      {icon: '&#xe660;', text: '我的', to: {name: 'Home'}},
    ];
    return { dockerList }
  }
}
</script>

<style lang="scss" scoped>
@import '../style/viriables.scss';
.docker {
  display: flex;
  box-sizing: border-box;
  position: absolute;
  padding: 0 .18rem;
  left: 0;
  bottom: 0;
  width: 100%;
  height: .49rem;
  border-top: .01rem solid $content-bgColor;
  &__item {
    flex: 1;
    text-align: center;
    a {
      color: $content-fontcolor;
      text-decoration: none;
    }
    .iconfont {
      margin: .07rem 0 .02rem 0;
      font-size: .18rem;
    }
    &--active {
      a {
        color: #1FA4FC;
      }
    }
  }
  &__title {
    font-size: .2rem;
    transform: scale(.5, .5);
    transform-origin: center top;
  }
}
</style>

src/views/shop/Cart.vue

<template>
  <div
    class="mask"
    v-if="showCart && calculations.total > 0"
    @click="handleCartShowChange"
  />
  <div class="cart">
    <div class="product" v-if="showCart && calculations.total > 0">
      <div class="product__header">
        <div
          class="product__header__all"
          @click="() => setCartItemsChecked(shopId)"
        >
          <span
            class="product__header__icon iconfont"
            v-html="calculations.allChecked ? '&#xe652;': '&#xe667;'"
          >
          </span>
          全选
        </div>
        <div class="product__header__clear">
          <span class="product__header__clear__btn"
            @click="() => cleanCartProducts(shopId)"
          >清空购物车</span>
        </div>
      </div>
      <div
        v-for="item in productList"
        :key="item._id"
        class="product__item"
      >
        <div
          class="product__item__checked iconfont"
          v-html="item.check ? '&#xe652;': '&#xe667;'"
          @click="() => changeCartItemChecked(shopId, item._id)"
        />
        <img class="product__item__img" :src="item.imgUrl" />
        <div class="product__item__detail">
          <h4 class="product__item__title">{{item.name}}</h4>
          <p class="product__item__price">
            <span class="product__item__yen">&yen;</span>{{item.price}}
            <span class="product__item__origin">&yen;{{item.oldPrice}}</span>
          </p>
        </div>
        <div class="product__number">
          <span
            class="product__number__minus"
            @click="() => { changeCartItemInfo(shopId, item._id, item, -1) }"
          >-</span>
            {{item.count || 0}}
          <span
            class="product__number__plus"
            @click="() => { changeCartItemInfo(shopId, item._id, item, 1) }"
          >+</span>
        </div>
      </div>
    </div>
    <div class="check">
      <div class="check__icon">
        <img
          src="http://www.dell-lee.com/imgs/vue3/basket.png"
          class="check__icon__img"
          @click="handleCartShowChange"
        />
        <div class="check__icon__tag">{{calculations.total}}</div>
      </div>
      <div class="check__info">
        总计：<span class="check__info__price">&yen; {{calculations.price}}</span>
      </div>
      <div class="check__btn" v-show="calculations.total > 0">
        <router-link :to="{path: `/orderConfirmation/${shopId}`}">
          去结算
        </router-link>
      </div>
    </div>
  </div>
</template>

<script>
import { ref } from 'vue'
import { useStore } from 'vuex'
import { useRoute } from 'vue-router'
import { useCommonCartEffect } from '../../effects/cartEffects'

// 获取购物车信息逻辑
const useCartEffect = (shopId) => {
    const store = useStore()
    const {
      productList, calculations, changeCartItemInfo
    } = useCommonCartEffect(shopId)

    const changeCartItemChecked = (shopId, productId) => {
      store.commit('changeCartItemChecked', {shopId, productId})
    }

    const cleanCartProducts = (shopId) => {
      store.commit('cleanCartProducts', { shopId })
    }

    const setCartItemsChecked = (shopId) => {
      store.commit('setCartItemsChecked', { shopId })
    }

    return {
      calculations, productList, cleanCartProducts,
      changeCartItemInfo, changeCartItemChecked, setCartItemsChecked,
    }
}

// 展示隐藏购物车逻辑
const toggleCartEffect = () => {
  const showCart = ref(false)
  const handleCartShowChange = () => {
    showCart.value = !showCart.value;
  }
  return { showCart, handleCartShowChange}
}

export default {
  name: 'Cart',
  setup() {
    const route = useRoute();
    const shopId = route.params.id;
    const {
      calculations, productList, cleanCartProducts,
      changeCartItemInfo, changeCartItemChecked, setCartItemsChecked
    } = useCartEffect(shopId)
    const { showCart, handleCartShowChange } = toggleCartEffect()
    return {
      calculations, shopId, productList, cleanCartProducts,
      changeCartItemInfo, changeCartItemChecked,
      setCartItemsChecked, showCart, handleCartShowChange
    }
  }
}
</script>

<style lang="scss" scoped>
@import '../../style/viriables.scss';
@import '../../style/mixins.scss';
.mask {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  top: 0;
  background: rgba(0, 0, 0, .5);
  z-index: 1;
}
.cart {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  background: $bgColor;
}
.product {
  overflow-y: scroll;
  flex: 1;
  background: $bgColor;
  &__header {
    display: flex;
    line-height: .52rem;
    border-bottom: 1px solid $content-bgColor;
    font-size: .14rem;
    color: $content-fontcolor;
    &__all {
      width: .64rem;
      margin-left: .18rem;
    }
    &__icon {
      display: inline-block;
      margin-right: .1rem;
      vertical-align: top;
      color: $btn-bgColor;
      font-size: .2rem;
    }
    &__clear {
      flex: 1;
      margin-right: .16rem;
      text-align: right;
      &__btn {
        display: inline-block;
      }
    }
  }
  &__item {
    position: relative;
    display: flex;
    padding: .12rem 0;
    margin: 0 .16rem;
    border-bottom: .01rem solid $content-bgColor;
    &__checked {
      line-height: .5rem;
      margin-right: .2rem;
      color: $btn-bgColor;
      font-size: .2rem;
    }
    &__detail {
      overflow: hidden;
    }
    &__img {
      width: .46rem;
      height: .46rem;
      margin-right: .16rem;
    }
    &__title {
      margin: 0;
      line-height: .2rem;
      font-size: .14rem;
      color: $content-fontcolor;
      @include ellipsis;
    }
    &__price {
      margin: .06rem 0 0 0;
      line-height: .2rem;
      font-size: .14rem;
      color: $hightlight-fontColor;
    }
    &__yen {
      font-size: .12rem;
    }
    &__origin {
      margin-left: .06rem;
      line-height: .2rem;
      font-size: .12rem;
      color: $light-fontColor;
      text-decoration: line-through;
    }
    .product__number {
      position: absolute;
      right: 0;
      bottom: .26rem;
      &__minus, &__plus
       {
        display: inline-block;
        width: .2rem;
        height: .2rem;
        line-height: .16rem;;
        border-radius: 50%;
        font-size: .2rem;
        text-align: center;
      }
      &__minus {
        border: .01rem solid $medium-fontColor;
        color: $medium-fontColor;
        margin-right: .05rem;
      }
      &__plus {
        background: $btn-bgColor;
        color: $bgColor;
        margin-left: .05rem;
      }
    }
  }
}
.check {
  display: flex;
  height: .49rem;
  border-top: .01rem solid $content-bgColor;
  line-height: .49rem;
  &__icon {
    position: relative;
    width: .84rem;
    &__img {
      display: block;
      margin: .12rem auto;
      width: .28rem;
      height: .26rem;
    }
    &__tag {
      position: absolute;
      left: .46rem;
      top: .04rem;
      padding: 0 .04rem;
      min-width: .2rem;
      height: .2rem;
      line-height: .2rem;
      background-color: $hightlight-fontColor;
      border-radius: .1rem;
      font-size: .12rem;
      text-align: center;
      color: #fff;
      transform: scale(.5);
      transform-origin: left center;
    }
  }
  &__info {
    flex: 1;
    color: $content-fontcolor;
    font-size: .12rem;
    &__price {
      line-height: .49rem;
      color: $hightlight-fontColor;
      font-size: .18rem;
    }
  }
  &__btn {
    width: .98rem;
    background-color: #4FB0F9;
    text-align: center;
    font-size: .14rem;
    a {
      color: $bgColor;
      text-decoration: none;
    }
  }
}
</style>

src/views/orderList/OrderList.vue

<template>
  <div class="wrapper">
    <div class="title">我的订单</div>
    <div class="orders">
      <div
        class="order"
        v-for="(item, index) in list"
        :key="index"
      >
        <div class="order__title">
          {{item.shopName}}
          <span class="order__status">
            {{item.isCanceled ? '已取消' : '已下单'}}
          </span>
        </div>
        <div class="order__content">
          <div class="order__content__imgs">
            <template
              v-for="(innerItem, innerIndex) in item.products"
              :key="innerIndex"
            >
              <img
                class="order__content__img"
                :src="innerItem.product.img"
                v-if="innerIndex <= 3"
              />
            </template>
          </div>
          <div class="order__content__info">
            <div class="order__content__price">¥ {{item.totalPrice}}</div>
            <div class="order__content__count">共 {{item.totalNumber}} 件</div>
          </div>
        </div>
      </div>
    </div>
  </div>
  <Docker :currentIndex="2"/>
</template>

<script>
import { reactive, toRefs } from 'vue'
import { get } from '../../utils/request'
import Docker from '../../components/Docker'

// 处理订单列表逻辑
const useOrderListEffect = () => {
  const data = reactive({ list:[]})
  const getNearbyList = async () => {
    const result = await get('/api/order')
    if (result?.errno === 0 && result?.data?.length) {
      const orderList = result.data
      orderList.forEach((order) => {
        const products = order.products || []
        let totalPrice = 0
        let totalNumber = 0
        products.forEach((productItem) => {
          totalNumber += (productItem?.orderSales || 0)
          totalPrice += ((productItem?.product?.price * productItem?.orderSales) || 0)
        })
        order.totalPrice = totalPrice
        order.totalNumber = totalNumber
      })
      data.list = result.data
    }
  }
  getNearbyList()
  const { list } = toRefs(data)
  return { list }
}

export default {
  name: 'OrderList',
  components: { Docker },
  setup() {
    const { list } = useOrderListEffect()
    return { list }
  }
}
</script>

<style lang="scss" scoped>
@import '../../style/viriables.scss';
.wrapper {
  overflow-y: auto;
  position: absolute;
  left: 0;
  top: 0;
  bottom: .5rem;
  right: 0;
  background: rgb(248, 248,248);
}
.title {
  line-height: .44rem;
  background: $bgColor;
  font-size: .16rem;
  color: $content-fontcolor;
  text-align: center;
}
.order {
  margin: .16rem .18rem;
  padding: .16rem;
  background: $bgColor;
  &__title {
    margin-bottom: .16rem;
    line-height: .22rem;
    font-size: .16rem;
    color: $content-fontcolor;
  }
  &__status {
    float: right;
    font-size: .14rem;
    color: $light-fontColor;
  }
  &__content {
    display: flex;
    &__imgs {
      flex: 1;
    }
    &__img {
      width: .4rem;
      height: .4rem;
      margin-right: .12rem;
    }
    &__info {
      width: .7rem;
    }
    &__price {
      margin-bottom: .04rem;
      line-height: .2rem;
      font-size: .14rem;
      color: $hightlight-fontColor;
      text-align: right;
    }
    &__count {
      line-height: .14rem;
      font-size: .12rem;
      color: $content-fontcolor;
      text-align: right;
    }
  }
}
</style>