项目4

购物车实现

创建子应用cart

cd luffyapi/apps
python ../../manage.py startapp cart

注册子应用cart

INSTALLED_APPS = [
    'ckeditor',  # 富文本编辑器
    'ckeditor_uploader',  # 富文本编辑器上传图片模块

    'home',
    'users',
    'courses',
    'cart',
]

因为购物车中的商品(课程)信息会经常被用户操作,所以为了减轻mysql服务器的压力,可以选择把购物车信息通过redis来存储.

配置信息

dev.py

# 设置redis缓存
CACHES = {
    # 默认缓存
    ....

    "cart":{
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": "redis://127.0.0.1:6379/3",
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
        }
    },
}

接下来商品信息存储以下内容:

购物车商品信息格式：
    商品数量[因为目前路飞学城的商品是视频，所以没有数量，如果以后做到真实商品，则必须有数量]

    商品id
    用户id
    课程有效期
    商品勾选状态

五种数据类型
    string字符串
        键:值
    hash哈希字典
        键:{
            域:值,
            域:值,
        }
    list列表
        键:[值1,值2,....]
    set集合
        键:{值1,值2,....}
    zset有序集合
        键:{
            权重值1:值,
            权重值2:值,
        }

经过比较可以发现没有一种数据类型，可以同时存储4个字段数据的，所以我们才有2种数据结构来保存购物车数据
可以发现，上面5种数据类型中，哈希hash可以存储的数据量是最多的。
hash：
    键[用户ID]:{
        域[商品ID]:值[课程有效期],
        域[商品ID]:值[课程有效期],
        域[商品ID]:值[课程有效期],
        域[商品ID]:值[课程有效期],
    }
set:
    键[用户ID]:{商品ID1,商品ID2....}

实现课程商品到购物车的api接口

cart/views.py视图，代码：

from rest_framework.viewsets import ViewSet
from rest_framework.permissions import IsAuthenticated
from courses.models import Course
from rest_framework.response import Response
from rest_framework import status
from django_redis import get_redis_connection

class CartAPIViewSet(ViewSet):
    # permission_classes = [IsAuthenticated]
    def add_cart(self,request):
        """添加商品到购物车"""
        # 获取用户ID
        user_id = 1 # request.user.id

        # 获取客户端发送过来的course_id
        course_id = request.data.get("course_id")

        # 验证课程是否存在
        try:
            Course.objects.get(pk=course_id, is_show=True, is_delete=False)
        except:
            return Response({"message":"对不起，添加的商品不存在"}, status=status.HTTP_400_BAD_REQUEST)

        # 设置有效期和勾选状态的默认值
        expire = 0 # 0表示没有设置默认值，或者将来我们完成课程的有效期时，重新定义0代表的意思。

        # 打开redis的链接
        redis_conn = get_redis_connection("cart")

        # 保存数据到redis中
        # 把商品ID和商品的有效期存放到hash中
        pipe = redis_conn.pipeline()
        pipe.multi()

        pipe.hset("cart_%s" % user_id, course_id, expire )
        pipe.sadd("selected_%s" % user_id, course_id ) # 默认勾选的状态，如果用户不希望将来这个商品进行结算状态，我们在购物车商品列表中提供按钮给用户去掉

        pipe.execute()

        # 返回响应结果
        return Response({"message":"成功添加商品到购物车"})

redis的异常处理，utils/exceptions.py，代码：(不写)

from rest_framework.views import exception_handler

from django.db import DatabaseError
from rest_framework.response import Response
from rest_framework import status
from redis import RedisError

import logging
logger = logging.getLogger('django')


def custom_exception_handler(exc, context):
    """
    自定义异常处理
    :param exc: 异常类
    :param context: 抛出异常的上下文
    :return: Response响应对象
    """
    # 调用drf框架原生的异常处理方法
    response = exception_handler(exc, context)

    if response is None:
        view = context['view']
        if isinstance(exc, DatabaseError) or isinstance(exc, RedisError):
            # 数据库异常
            logger.error('[%s] %s' % (view, exc))
            response = Response({'message': '服务器内部错误'}, status=status.HTTP_507_INSUFFICIENT_STORAGE)

    return response

提供访问路由

总路由,代码：

urlpatterns = [
    ...
    path('cart/', include("cart.urls") ),
]

子应用路由cart/urls.py,代码:

from django.urls import path,re_path
from . import views
urlpatterns = [
    path("", views.CartAPIView.as_view({"post":"add_cart"})),
]

代码还原，把注释符号去掉：

views.py

class CartAPIViewSet(ViewSet):
    permission_classes = [IsAuthenticated]
    def add_cart(self,request):
        """添加商品到购物车"""
        # 获取用户ID
        user_id = request.user.id

前端提交课程到后端添加购物车数据

Detail.vue

<template>
    <div class="detail">
      <Header/>
      <div class="main">
        <div class="course-info">
          <div class="wrap-left">
          <videoPlayer class="video-player vjs-custom-skin"
          ref="videoPlayer"
          :playsinline="true"
          :options="playerOptions"
          @play="onPlayerPlay($event)"
          @pause="onPlayerPause($event)"
          />
          </div>
          <div class="wrap-right">
            <h3 class="course-name">{{course.name}}</h3>
            <p class="data">{{course.students}}人在学&nbsp;&nbsp;&nbsp;&nbsp;课程总时长：{{course.lessons}}课时/{{course.lessons==course.pub_lessons?'更新完成':`已更新${course.pub_lessons}课时`}}&nbsp;&nbsp;&nbsp;&nbsp;难度：初级</p>
            <div class="sale-time">
              <p class="sale-type">限时免费</p>
              <p class="expire">距离结束：仅剩 01天 04小时 33分 <span class="second">08</span> 秒</p>
            </div>
            <p class="course-price">
              <span>活动价</span>
              <span class="discount">¥0.00</span>
              <span class="original">¥{{course.price}}</span>
            </p>
            <div class="buy">
              <div class="buy-btn">
                <button class="buy-now">立即购买</button>
                <button class="free">免费试学</button>
              </div>
              <div class="add-cart" @click="add_cart"><img src="/static/image/cart-yellow.svg" alt="">加入购物车</div>
            </div>
          </div>
        </div>
        <div class="course-tab">
          <ul class="tab-list">
            <li :class="tabIndex==1?'active':''" @click="tabIndex=1">详情介绍</li>
            <li :class="tabIndex==2?'active':''" @click="tabIndex=2">课程章节 <span :class="tabIndex!=2?'free':''">(试学)</span></li>
            <li :class="tabIndex==3?'active':''" @click="tabIndex=3">用户评论 (42)</li>
            <li :class="tabIndex==4?'active':''" @click="tabIndex=4">常见问题</li>
          </ul>
        </div>
        <div class="course-content">
          <div class="course-tab-list">
            <div class="tab-item" v-if="tabIndex==1">
              <div v-html="url_format(course.brief)"></div>
            </div>
            <div class="tab-item" v-if="tabIndex==2">
              <div class="tab-item-title">
                <p class="chapter">课程章节</p>
                <p class="chapter-length">共11章 147个课时</p>
              </div>
              <div class="chapter-item" v-for="chapter in chapter_list">
                <p class="chapter-title"><img src="/static/image/1.svg" alt="">第{{chapter.chapter}}章·{{chapter.name}}</p>
                <ul class="lesson-list">
                  <li class="lesson-item" v-for="lesson in chapter.lessons">
                    <p class="name"><span class="index">{{chapter.chapter}}-{{lesson.id}}</span> {{lesson.name}}<span class="free" v-if="lesson.free_trail">免费</span></p>
                    <p class="time">{{lesson.duration}} <img src="/static/image/chapter-player.svg"></p>
                    <button class="try" v-if="lesson.free_trail">立即试学</button>
                    <button class="try" v-else>立即购买</button>
                  </li>

                </ul>
              </div>

            </div>
            <div class="tab-item" v-if="tabIndex==3">
              用户评论
            </div>
            <div class="tab-item" v-if="tabIndex==4">
              常见问题
            </div>
          </div>
          <div class="course-side">
             <div class="teacher-info">
               <h4 class="side-title"><span>授课老师</span></h4>
               <div class="teacher-content">
                 <div class="cont1">
                   <img :src="teacher.image">
                   <div class="name">
                     <p class="teacher-name">{{teacher.name}}</p>
                     <p class="teacher-title">{{teacher.title}} {{teacher.signature}}</p>
                   </div>
                 </div>
                 <p class="narrative" >{{teacher.brief}}</p>
               </div>
             </div>
          </div>
        </div>
      </div>
      <Footer/>
    </div>
</template>

<script>
import Header from "./common/Header"
import Footer from "./common/Footer"
// 1.加载播放器组件
import {videoPlayer} from 'vue-video-player';

export default {
    name: "Detail",
    data(){
      return {
        course_id: 0, // 课程ID
        course: {},   // 课程信息
        teacher:'',
        chapter_list: [], // 章节列表
        tabIndex:2, // 当前选项卡显示的下标
        playerOptions:{
          playbackRates: [0.7, 1.0, 1.5, 2.0], // 播放速度
          autoplay: false, //如果true,则自动播放
          muted: false, // 默认情况下将会消除任何音频。
          loop: false, // 循环播放
          preload: 'auto',  // 建议浏览器在<video>加载元素后是否应该开始下载视频数据。auto浏览器选择最佳行为,立即开始加载视频（如果浏览器支持）
          language: 'zh-CN',
          aspectRatio: '16:9', // 将播放器置于流畅模式，并在计算播放器的动态大小时使用该值。值应该代表一个比例 - 用冒号分隔的两个数字（例如"16:9"或"4:3"）
          fluid: true, // 当true时，Video.js player将拥有流体大小。换句话说，它将按比例缩放以适应其容器。
          sources: [{ // 播放资源和资源格式
            type: "video/mp4",
            src: "http://img.ksbbs.com/asset/Mon_1703/05cacb4e02f9d9e.mp4" //你的视频地址（必填）
          }],
          poster: "../static/image/course-cover.jpeg", //视频封面图
          width: document.documentElement.clientWidth, // 默认视频全屏时的最大宽度
          notSupportedMessage: '此视频暂无法播放，请稍后再试', //允许覆盖Video.js无法播放媒体源时显示的默认信息。
        }
      }
    },
    created(){
      // 接受地址路径参数
      // console.log( '路径参数： id=',this.$route.params.id );
      // 接受地址的查询字符串参数
      // console.log( '查询字符串: uid=', this.$route.query.uid );
      this.course_id = this.$route.params.id;
      this.get_course();
      this.get_chapter();
    },
    methods: {
      onPlayerPlay(){
          alert("开始播放视频，关闭广告");
      },
      onPlayerPause(){
          alert("暂停播放广告");
      },
      get_course(){
          // 获取课程信息
          this.$axios.get(`${this.$settings.Host}/courses/${this.course_id}/`).then(response=>{
              this.course = response.data;

              this.teacher=response.data.teacher

          }).catch(error=>{
              let self = this;
              this.$alert("无法获取当前课程信息，请联系客服工作人员","路飞学城",{
                  callback(){
                    self.$router.back();  // 等同于 self.$router.go(-1);
                  }
              });
          })
      },

      get_chapter(){
        // 获取课程相关的章节课时信息
        this.$axios.get(`${this.$settings.Host}/courses/chapters/`,{
            // params:{
            //     "course": this.course_id,
            // }
        }).then(response=>{
            this.chapter_list = response.data;
            console.log(this.chapter_list);

        }).catch(error=>{
            this.$message.info("没有获取到当前课程的章节信息");
        });
      },
      url_format(data){
        console.log(data);
        while( data.search('="/media') != -1 ){
          data = data.replace('="/media',`="${this.$settings.Host}/media`);
        }
        return data;
      },
      add_cart(){
          // 添加商品课程到购物车中
          // 1. 先判断用户是否登录
          let user_token = this.$settings.check_user_login();
          if( !user_token ){
              let self = this;
              this.$confirm('对不起，您尚未登录，请登录后继续购买, 是否继续?', '路飞学城', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
              }).then(() => { // 点击确定按钮
                self.$router.push("/login");
              }).catch(() => {

              });
              return ;
          }

          this.$axios.post(`${this.$settings.Host}/cart/`,{
              course_id: this.course_id
          },{
              headers:{ // 访问需要登录认证权限的api接口必须附带token到请求头中
                  "Authorization": "jwt " + user_token,
              }
          }).then(response=>{
              this.$message.info(response.data.message);
          }).catch(error=>{
             if(error.response.status == 401){
                 // 没有登录或者登录超时
                let self = this;
                this.$confirm('对不起，您尚未登录，请登录后继续购买, 是否继续?', '路飞学城', {
                  confirmButtonText: '确定',
                  cancelButtonText: '取消',
                  type: 'warning'
                }).then(() => { // 点击确定按钮
                  self.$router.push("/login");
                }).catch(() => {

                });
                return ;
             }else{
                 this.$message.error("购物车添加商品失败！请联系客服工作人员！");
             }
          });

      },
    },
    components:{
      Header,
      Footer,
      videoPlayer,  // 注册播放器组件到当前页面中
    }
}
</script>

<style scoped>
.main{
  background: #fff;
  padding-top: 30px;
}
.course-info{
  width: 1200px;
  margin: 0 auto;
  overflow: hidden;
}
.wrap-left{
  float: left;
  width: 690px;
  height: 388px;
  background-color: #000;
}
.wrap-right{
  float: left;
  position: relative;
  height: 388px;
}
.course-name{
  font-size: 20px;
  color: #333;
  padding: 10px 23px;
  letter-spacing: .45px;
}
.data{
  padding-left: 23px;
  padding-right: 23px;
  padding-bottom: 16px;
  font-size: 14px;
  color: #9b9b9b;
}
.sale-time{
  width: 464px;
  background: #fa6240;
  font-size: 14px;
  color: #4a4a4a;
  padding: 10px 23px;
  overflow: hidden;
}
.sale-type {
  font-size: 16px;
  color: #fff;
  letter-spacing: .36px;
  float: left;
}
.sale-time .expire{
  font-size: 14px;
  color: #fff;
  float: right;
}
.sale-time .expire .second{
  width: 24px;
  display: inline-block;
  background: #fafafa;
  color: #5e5e5e;
  padding: 6px 0;
  text-align: center;
}
.course-price{
  background: #fff;
  font-size: 14px;
  color: #4a4a4a;
  padding: 5px 23px;
}
.discount{
  font-size: 26px;
  color: #fa6240;
  margin-left: 10px;
  display: inline-block;
  margin-bottom: -5px;
}
.original{
  font-size: 14px;
  color: #9b9b9b;
  margin-left: 10px;
  text-decoration: line-through;
}
.buy{
  width: 464px;
  padding: 0px 23px;
  position: absolute;
  left: 0;
  bottom: 20px;
  overflow: hidden;
}
.buy .buy-btn{
  float: left;
}
.buy .buy-now{
  width: 125px;
  height: 40px;
  border: 0;
  background: #ffc210;
  border-radius: 4px;
  color: #fff;
  cursor: pointer;
  margin-right: 15px;
  outline: none;
}
.buy .free{
  width: 125px;
  height: 40px;
  border-radius: 4px;
  cursor: pointer;
  margin-right: 15px;
  background: #fff;
  color: #ffc210;
  border: 1px solid #ffc210;
}
.add-cart{
  float: right;
  font-size: 14px;
  color: #ffc210;
  text-align: center;
  cursor: pointer;
  margin-top: 10px;
}
.add-cart img{
  width: 20px;
  height: 18px;
  margin-right: 7px;
  vertical-align: middle;
}

.course-tab{
    width: 100%;
    background: #fff;
    margin-bottom: 30px;
    box-shadow: 0 2px 4px 0 #f0f0f0;

}
.course-tab .tab-list{
    width: 1200px;
    margin: auto;
    color: #4a4a4a;
    overflow: hidden;
}
.tab-list li{
    float: left;
    margin-right: 15px;
    padding: 26px 20px 16px;
    font-size: 17px;
    cursor: pointer;
}
.tab-list .active{
    color: #ffc210;
    border-bottom: 2px solid #ffc210;
}
.tab-list .free{
    color: #fb7c55;
}
.course-content{
    width: 1200px;
    margin: 0 auto;
    background: #FAFAFA;
    overflow: hidden;
    padding-bottom: 40px;
}
.course-tab-list{
    width: 880px;
    height: auto;
    padding: 20px;
    background: #fff;
    float: left;
    box-sizing: border-box;
    overflow: hidden;
    position: relative;
    box-shadow: 0 2px 4px 0 #f0f0f0;
}
.tab-item{
    width: 880px;
    background: #fff;
    padding-bottom: 20px;
    box-shadow: 0 2px 4px 0 #f0f0f0;
}
.tab-item-title{
    justify-content: space-between;
    padding: 25px 20px 11px;
    border-radius: 4px;
    margin-bottom: 20px;
    border-bottom: 1px solid #333;
    border-bottom-color: rgba(51,51,51,.05);
    overflow: hidden;
}
.chapter{
    font-size: 17px;
    color: #4a4a4a;
    float: left;
}
.chapter-length{
    float: right;
    font-size: 14px;
    color: #9b9b9b;
    letter-spacing: .19px;
}
.chapter-title{
    font-size: 16px;
    color: #4a4a4a;
    letter-spacing: .26px;
    padding: 12px;
    background: #eee;
    border-radius: 2px;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
    align-items: center;
}
.chapter-title img{
    width: 18px;
    height: 18px;
    margin-right: 7px;
    vertical-align: middle;
}
.lesson-list{
    padding:0 20px;
}
.lesson-list .lesson-item{
    padding: 15px 20px 15px 36px;
    cursor: pointer;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}
.lesson-item .name{
    font-size: 14px;
    color: #666;
    float: left;
}
.lesson-item .index{
    margin-right: 5px;
}
.lesson-item .free{
    font-size: 12px;
    color: #fff;
    letter-spacing: .19px;
    background: #ffc210;
    border-radius: 100px;
    padding: 1px 9px;
    margin-left: 10px;
}
.lesson-item .time{
    font-size: 14px;
    color: #666;
    letter-spacing: .23px;
    opacity: 1;
    transition: all .15s ease-in-out;
    float: right;
}
.lesson-item .time img{
    width: 18px;
    height: 18px;
    margin-left: 15px;
    vertical-align: text-bottom;
}
.lesson-item .try{
    width: 86px;
    height: 28px;
    background: #ffc210;
    border-radius: 4px;
    font-size: 14px;
    color: #fff;
    position: absolute;
    right: 20px;
    top: 10px;
    opacity: 0;
    transition: all .2s ease-in-out;
    cursor: pointer;
    outline: none;
    border: none;
}
.lesson-item:hover{
    background: #fcf7ef;
    box-shadow: 0 0 0 0 #f3f3f3;
}
.lesson-item:hover .name{
    color: #333;
}
.lesson-item:hover .try{
    opacity: 1;
}

.course-side{
    width: 300px;
    height: auto;
    margin-left: 20px;
    float: right;
}
.teacher-info{
    background: #fff;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px 0 #f0f0f0;
}
.side-title{
    font-weight: normal;
    font-size: 17px;
    color: #4a4a4a;
    padding: 18px 14px;
    border-bottom: 1px solid #333;
    border-bottom-color: rgba(51,51,51,.05);
}
.side-title span{
    display: inline-block;
    border-left: 2px solid #ffc210;
    padding-left: 12px;
}

.teacher-content{
    padding: 30px 20px;
    box-sizing: border-box;
}

.teacher-content .cont1{
    margin-bottom: 12px;
    overflow: hidden;
}

.teacher-content .cont1 img{
    width: 54px;
    height: 54px;
    margin-right: 12px;
    float: left;
}
.teacher-content .cont1 .name{
    float: right;
}
.teacher-content .cont1 .teacher-name{
    width: 188px;
    font-size: 16px;
    color: #4a4a4a;
    padding-bottom: 4px;
}
.teacher-content .cont1 .teacher-title{
    width: 188px;
    font-size: 13px;
    color: #9b9b9b;
    white-space: nowrap;
}
.teacher-content .narrative{
    font-size: 14px;
    color: #666;
    line-height: 24px;
}
</style>

View Code

显示购物车商品列表页面

购物车页面有两部分构成:

Cart.vue,代码:

<template>
    <div class="cart">
      <Header></Header>
      <div class="cart_info">
        <div class="cart_title">
          <span class="text">我的购物车</span>
          <span class="total">共4门课程</span>
        </div>
        <div class="cart_table">
          <div class="cart_head_row">
            <span class="doing_row"></span>
            <span class="course_row">课程</span>
            <span class="expire_row">有效期</span>
            <span class="price_row">单价</span>
            <span class="do_more">操作</span>
          </div>
          <div class="cart_course_list">
            <CartItem></CartItem>
            <CartItem></CartItem>
            <CartItem></CartItem>
            <CartItem></CartItem>
          </div>
          <div class="cart_footer_row">
            <span class="cart_select"><label> <el-checkbox v-model="checked"></el-checkbox><span>全选</span></label></span>
            <span class="cart_delete"><i class="el-icon-delete"></i> <span>删除</span></span>
            <span class="goto_pay">去结算</span>
            <span class="cart_total">总计：¥0.0</span>
          </div>
        </div>
      </div>
      <Footer></Footer>
    </div>
</template>

<script>
import Header from "./common/Header"
import Footer from "./common/Footer"
import CartItem from "./common/CartItem"
export default {
    name: "Cart",
    data(){
      return {
        checked: false,
      }
    },
    methods:{

    },
    components:{
      Header,
      Footer,
      CartItem,
    }
}
</script>

<style scoped>
.cart_info{
  width: 1200px;
  margin: 0 auto 200px;
}
.cart_title{
  margin: 25px 0;
}
.cart_title .text{
  font-size: 18px;
  color: #666;
}
.cart_title .total{
  font-size: 12px;
  color: #d0d0d0;
}
.cart_table{
  width: 1170px;
}
.cart_table .cart_head_row{
  background: #F7F7F7;
  width: 100%;
  height: 80px;
  line-height: 80px;
  padding-right: 30px;
}
.cart_table .cart_head_row::after{
  content: "";
  display: block;
  clear: both;
}
.cart_table .cart_head_row .doing_row,
.cart_table .cart_head_row .course_row,
.cart_table .cart_head_row .expire_row,
.cart_table .cart_head_row .price_row,
.cart_table .cart_head_row .do_more{
  padding-left: 10px;
  height: 80px;
  float: left;
}
.cart_table .cart_head_row .doing_row{
  width: 78px;
}
.cart_table .cart_head_row .course_row{
  width: 530px;
}
.cart_table .cart_head_row .expire_row{
  width: 188px;
}
.cart_table .cart_head_row .price_row{
  width: 162px;
}
.cart_table .cart_head_row .do_more{
  width: 162px;
}

.cart_footer_row{
  padding-left: 30px;
  background: #F7F7F7;
  width: 100%;
  height: 80px;
  line-height: 80px;
}
.cart_footer_row .cart_select span{
  font-size: 18px;
  color: #666;
}
.cart_footer_row .cart_delete{
  margin-left: 58px;
}
.cart_delete .el-icon-delete{
  font-size: 18px;
}

.cart_delete span{
  margin-left: 15px;
  cursor: pointer;
  font-size: 18px;
  color: #666;
}
.cart_total{
  float: right;
  margin-right: 62px;
  font-size: 18px;
  color: #666;
}
.goto_pay{
  float: right;
  width: 159px;
  height: 80px;
  outline: none;
  border: none;
  background: #ffc210;
  font-size: 18px;
  color: #fff;
  text-align: center;
  cursor: pointer;
}
</style>

View Code

Cartitem.vue,代码:

<template>
    <div class="cart_item">
      <div class="cart_column column_1">
        <el-checkbox class="my_el_checkbox" v-model="checked"></el-checkbox>
      </div>
      <div class="cart_column column_2">
        <img src="/static/image/course_demo.png" alt="">
        <span><router-link to="/course/detail/1">爬虫从入门到进阶</router-link></span>
      </div>
      <div class="cart_column column_3">
        <el-select v-model="expire" size="mini" placeholder="请选择购买有效期" class="my_el_select">
          <el-option label="1个月有效" value="30" key="30"></el-option>
          <el-option label="2个月有效" value="60" key="60"></el-option>
          <el-option label="3个月有效" value="90" key="90"></el-option>
          <el-option label="永久有效" value="10000" key="10000"></el-option>
        </el-select>
      </div>
      <div class="cart_column column_4">¥499.0</div>
      <div class="cart_column column_4">删除</div>
    </div>
</template>

<script>
export default {
    name: "CartItem",
    data(){
      return {
        checked:false,
        expire: "1个月有效",
      }
    }
}
</script>

<style scoped>
.cart_item::after{
  content: "";
  display: block;
  clear: both;
}
.cart_column{
  float: left;
  height: 250px;
}
.cart_item .column_1{
  width: 88px;
  position: relative;
}
.my_el_checkbox{
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  top: 0;
  margin: auto;
  width: 16px;
  height: 16px;
}
.cart_item .column_2 {
  padding: 67px 10px;
  width: 520px;
  height: 116px;
}
.cart_item .column_2 img{
  width: 175px;
  height: 115px;
  margin-right: 35px;
  vertical-align: middle;
}
.cart_item .column_3{
  width: 197px;
  position: relative;
  padding-left: 10px;
}
.my_el_select{
  width: 117px;
  height: 28px;
  position: absolute;
  top: 0;
  bottom: 0;
  margin: auto;
}
.cart_item .column_4{
  padding: 67px 10px;
  height: 116px;
  width: 142px;
  line-height: 116px;
}

</style>

View Code

前端路由:

import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)
// @ 表示src目录
// ...
import Cart from "@/components/Cart"
// ....
export default new Router({
  mode:"history",
  routes: [
    // ....
    {
      path: '/cart',
      name: 'Cart',
      component: Cart,
    },
        // ....
  ]
})

View Code

后端提供获取购物车课程列表信息

cart/views.py，代码：

"""功能分析：
        购物车中的商品信息和商品勾选状态是分开存储的，但是我们现在需要一个接口提供所有数据，所以我们需要整合/重构数据的结构
        cart_<user_id>:{
            <course_id>:<expire>,
            <course_id>:<expire>,
            ...
        }

        selected_<user_id>:{<course_id>,<course_id>,....}

        目标：把数据整合成一个列表，列表中每一个成员就是商品字典：
        data = [
            {
                course_id:<course_id>,
                expire:<expire>,
                selected:<selected>,
            },
            {
                course_id:<course_id>,
                expire:<expire>,
                selected:<selected>,
            },
            {
                course_id:<course_id>,
                expire:<expire>,
                selected:<selected>,
            },
        ]
"""


from rest_framework.viewsets import ViewSet
from rest_framework.permissions import IsAuthenticated
from courses.models import Course
from rest_framework.response import Response
from rest_framework import status
from django_redis import get_redis_connection

class CartAPIViewSet(ViewSet):
    permission_classes = [IsAuthenticated]
    def add_cart(self,request):
        """添加商品到购物车"""
        # 获取用户ID
        user_id = request.user.id

        # 获取客户端发送过来的course_id
        course_id = request.data.get("course_id")

        # 验证课程是否存在
        try:
            Course.objects.get(pk=course_id, is_show=True, is_delete=False)
        except:
            return Response({"message":"对不起，添加的商品不存在"}, status=status.HTTP_400_BAD_REQUEST)

        # 设置有效期和勾选状态的默认值
        expire = 0 # 0表示没有设置默认值，或者将来我们完成课程的有效期时，重新定义0代表的意思。

        # 打开redis的链接
        redis_conn = get_redis_connection("cart")

        # 保存数据到redis中
        # 把商品ID和商品的有效期存放到hash中
        pipe = redis_conn.pipeline()
        pipe.multi()

        pipe.hset("cart_%s" % user_id, course_id, expire )
        pipe.sadd("selected_%s" % user_id, course_id ) # 默认勾选的状态，如果用户不希望将来这个商品进行结算状态，我们在购物车商品列表中提供按钮给用户去掉

        pipe.execute()

        # 返回响应结果
        return Response({"message":"成功添加商品到购物车"})


    def list(self, request):
        """购物车商品列表"""
        # 获取登录用户id
        user_id = request.user.id

        # 1. 打开redis链接
        redis_conn = get_redis_connection("cart")

        # 2. 从redis读取购物车信息[[id,course_img,name,price]]和勾选商品集合
        cart_dict_bytes = redis_conn.hgetall("cart_%s" % user_id)
        print(cart_dict_bytes) # {b'1': b'0', b'3': b'0', b'4': b'0'}

        selected_set_bytes = redis_conn.smembers("selected_%s" % user_id)

        # 3. 把勾选状态信息和商品信息组合成一个数据列表
        data = []
        for course_id_bytes, expire_bytes in cart_dict_bytes.items():
            course_id = course_id_bytes.decode()
            expire = expire_bytes.decode()
            try:
                course = Course.objects.get(pk=course_id, is_show=True, is_delete=False)
            except:
                course = None

            if course:
                data.append({
                    "course_id": course.id,
                    "course_name": course.name,
                    "course_img": course.course_img.url,
                    "price": "%.2f" % course.price, # 将来替换成真实价格
                    "expire": expire,
                    "selected": course_id_bytes in selected_set_bytes, # 勾选状态
                })

        # 4. 返回数据
        return Response(data)

更改路由

cart/urls.py

from django.urls import path
from . import views
urlpatterns = [
    path("", views.CartAPIViewSet.as_view({"post":"add_cart","get":"list"}) ),
]

前端请求并显示课程信息

Cart.vue

<template>
    <div class="cart">
      <Header></Header>
      <div class="cart_info">
        <div class="cart_title">
          <span class="text">我的购物车</span>
          <span class="total">共4门课程</span>
        </div>
        <div class="cart_table">
          <div class="cart_head_row">
            <span class="doing_row"></span>
            <span class="course_row">课程</span>
            <span class="expire_row">有效期</span>
            <span class="price_row">单价</span>
            <span class="do_more">操作</span>
          </div>
          <div class="cart_course_list">
            <CartItem :key="key" v-for="course,key in course_list" :course="course"></CartItem>
          </div>
          <div class="cart_footer_row">
            <span class="cart_select"><label> <el-checkbox v-model="checked"></el-checkbox><span>全选</span></label></span>
            <span class="cart_delete"><i class="el-icon-delete"></i> <span>删除</span></span>
            <span class="goto_pay">去结算</span>
            <span class="cart_total">总计：¥0.0</span>
          </div>
        </div>
      </div>
      <Footer></Footer>
    </div>
</template>

<script>
import Header from "./common/Header"
import Footer from "./common/Footer"
import CartItem from "./common/CartItem"
export default {
    name: "Cart",
    data(){
      return {
        user_token: "",
        checked: false,  // 实现全选功能的
        course_list: [], // 购物车中的商品列表
      }
    },
    created(){
      // 验证登录
      this.user_token = this.$settings.check_user_login();
      if(!this.user_token){
          let self = this;
          this.$alert("请登录以后再访问！","路飞学城",{
              callback(){
                  self.$router.push("/login");
              }
          });
          return ;
      }
      // 获取购物车商品列表
      this.get_cart();

    },
    methods:{
      get_cart(){
          // 获取购物车中的商品列表
          this.$axios.get(`${this.$settings.Host}/cart/`,{
              headers:{ // 访问需要登录认证权限的api接口必须附带token到请求头中
                  "Authorization": "jwt " + this.user_token,
              }
          }).then(response=>{
              this.course_list = response.data;
          }).catch(error=>{
              this.$message.error("无法获取购物车商品列表，请联系客服工作人员！");
          });
      }
    },
    components:{
      Header,
      Footer,
      CartItem,
    }
}
</script>

<style scoped>
.cart_info{
  width: 1200px;
  margin: 0 auto 200px;
}
.cart_title{
  margin: 25px 0;
}
.cart_title .text{
  font-size: 18px;
  color: #666;
}
.cart_title .total{
  font-size: 12px;
  color: #d0d0d0;
}
.cart_table{
  width: 1170px;
}
.cart_table .cart_head_row{
  background: #F7F7F7;
  width: 100%;
  height: 80px;
  line-height: 80px;
  padding-right: 30px;
}
.cart_table .cart_head_row::after{
  content: "";
  display: block;
  clear: both;
}
.cart_table .cart_head_row .doing_row,
.cart_table .cart_head_row .course_row,
.cart_table .cart_head_row .expire_row,
.cart_table .cart_head_row .price_row,
.cart_table .cart_head_row .do_more{
  padding-left: 10px;
  height: 80px;
  float: left;
}
.cart_table .cart_head_row .doing_row{
  width: 78px;
}
.cart_table .cart_head_row .course_row{
  width: 530px;
}
.cart_table .cart_head_row .expire_row{
  width: 188px;
}
.cart_table .cart_head_row .price_row{
  width: 162px;
}
.cart_table .cart_head_row .do_more{
  width: 162px;
}

.cart_footer_row{
  padding-left: 30px;
  background: #F7F7F7;
  width: 100%;
  height: 80px;
  line-height: 80px;
}
.cart_footer_row .cart_select span{
  font-size: 18px;
  color: #666;
}
.cart_footer_row .cart_delete{
  margin-left: 58px;
}
.cart_delete .el-icon-delete{
  font-size: 18px;
}

.cart_delete span{
  margin-left: 15px;
  cursor: pointer;
  font-size: 18px;
  color: #666;
}
.cart_total{
  float: right;
  margin-right: 62px;
  font-size: 18px;
  color: #666;
}
.goto_pay{
  float: right;
  width: 159px;
  height: 80px;
  outline: none;
  border: none;
  background: #ffc210;
  font-size: 18px;
  color: #fff;
  text-align: center;
  cursor: pointer;
}
</style>

View Code

CartItem.vue

<template>
    <div class="cart_item">
      <div class="cart_column column_1">
        <el-checkbox class="my_el_checkbox" v-model="course.selected"></el-checkbox>
      </div>
      <div class="cart_column column_2">
        <img :src="$settings.Host+course.course_img" alt="">
        <span><router-link :to="`/courses/${course.course_id}`">{{course.course_name}}</router-link></span>
      </div>
      <div class="cart_column column_3">
        <el-select v-model="expire" size="mini" placeholder="请选择购买有效期" class="my_el_select">
          <el-option label="1个月有效" value="30" key="30"></el-option>
          <el-option label="2个月有效" value="60" key="60"></el-option>
          <el-option label="3个月有效" value="90" key="90"></el-option>
          <el-option label="永久有效" value="10000" key="10000"></el-option>
        </el-select>
      </div>
      <div class="cart_column column_4">¥{{course.price}}</div>
      <div class="cart_column column_4">删除</div>
    </div>
</template>

<script>
export default {
    name: "CartItem",
    props:["course"],
    data(){
      return {
        checked:false,
        expire: "1个月有效",
      }
    }
}
</script>

<style scoped>
.cart_item::after{
  content: "";
  display: block;
  clear: both;
}
.cart_column{
  float: left;
  height: 250px;
}
.cart_item .column_1{
  width: 88px;
  position: relative;
}
.my_el_checkbox{
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  top: 0;
  margin: auto;
  width: 16px;
  height: 16px;
}
.cart_item .column_2 {
  padding: 67px 10px;
  width: 520px;
  height: 116px;
}
.cart_item .column_2 img{
  width: 175px;
  height: 115px;
  margin-right: 35px;
  vertical-align: middle;
}
.cart_item .column_3{
  width: 197px;
  position: relative;
  padding-left: 10px;
}
.my_el_select{
  width: 117px;
  height: 28px;
  position: absolute;
  top: 0;
  bottom: 0;
  margin: auto;
}
.cart_item .column_4{
  padding: 67px 10px;
  height: 116px;
  width: 142px;
  line-height: 116px;
}

</style>

View Code

切换勾选状态

后端提供修改勾选状态的接口

视图代码

from rest_framework.viewsets import ViewSet
from rest_framework.permissions import IsAuthenticated
from courses.models import Course
from rest_framework.response import Response
from rest_framework import status
from django_redis import get_redis_connection

class CartAPIViewSet(ViewSet):
    permission_classes = [IsAuthenticated]
    def add_cart(self,request):
        // # ...

    def list(self, request):
        """购物车商品列表"""
        // # ...

def change_select_status(self,request):
        """切换商品勾选状态"""
        # 获取用户ID
        # 获取登录用户id
        user_id = 1 # request.user.id
        # 获取客户端提交过来的勾选状态
        selected = request.data.get("selected")
        # 获取课程ID
        course_id = request.data.get("course_id")
        # 验证数据
        try:
            course = Course.objects.get(pk=course_id, is_show=True, is_delete=False)
        except:
            return Response({"message":"对不起，操作的商品不存在"}, status=status.HTTP_400_BAD_REQUEST)

        # 链接redis，修改指定商品的勾选状态
        redis_conn = get_redis_connection("cart")
        if selected:
            """添加商品的勾选状态"""
            redis_conn.sadd("selected_%s" % user_id, course_id)
        else:
            """移除商品的勾选状态"""
            redis_conn.srem("selected_%s" % user_id, course_id)

        # 返回响应结果
        return Response({"message":"切换勾选状态成功！"})

View Code

路由代码:

from django.urls import path
from . import views
urlpatterns = [
    path("", views.CartAPIViewSet.as_view({"post":"add_cart", "get":"list", "patch":"change_select_status"}) ),
]

前端实现修改勾选状态的功能

CartItem.vue

<template>
    <div class="cart_item">
      <div class="cart_column column_1">
        <el-checkbox class="my_el_checkbox" v-model="course.selected"></el-checkbox>
      </div>
      <div class="cart_column column_2">
        <img :src="$settings.Host+course.course_img" alt="">
        <span><router-link :to="`/courses/${course.course_id}`">{{course.course_name}}</router-link></span>
      </div>
      <div class="cart_column column_3">
        <el-select v-model="expire" size="mini" placeholder="请选择购买有效期" class="my_el_select">
          <el-option label="1个月有效" value="30" key="30"></el-option>
          <el-option label="2个月有效" value="60" key="60"></el-option>
          <el-option label="3个月有效" value="90" key="90"></el-option>
          <el-option label="永久有效" value="10000" key="10000"></el-option>
        </el-select>
      </div>
      <div class="cart_column column_4">¥{{course.price}}</div>
      <div class="cart_column column_4">删除</div>
    </div>
</template>

<script>
export default {
    name: "CartItem",
    props:["course"],
    watch:{
        "course.selected": function(){
            // 切换商品的勾选状态
            this.change_selected_status();
        }
    },
    data(){
      return {
        checked:false,
        expire: "1个月有效",
      }
    },
    methods:{
        change_selected_status(){
            this.user_token = this.$settings.check_user_login();
            // 切换商品的勾选状态
            this.$axios.patch(`${this.$settings.Host}/cart/`,{
                "course_id": this.course.course_id,
                  "selected": this.course.selected,
            },{
                headers:{ // 访问需要登录认证权限的api接口必须附带token到请求头中
                  "Authorization": "jwt " + this.user_token,
                }
            }).then(response=>{

            }).catch(error=>{
               this.$message.error("勾选状态切换失败！请刷新页面后重新尝试！");
            });
        }
    }
}
</script>

<style scoped>
.cart_item::after{
  content: "";
  display: block;
  clear: both;
}
.cart_column{
  float: left;
  height: 250px;
}
.cart_item .column_1{
  width: 88px;
  position: relative;
}
.my_el_checkbox{
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  top: 0;
  margin: auto;
  width: 16px;
  height: 16px;
}
.cart_item .column_2 {
  padding: 67px 10px;
  width: 520px;
  height: 116px;
}
.cart_item .column_2 img{
  width: 175px;
  height: 115px;
  margin-right: 35px;
  vertical-align: middle;
}
.cart_item .column_3{
  width: 197px;
  position: relative;
  padding-left: 10px;
}
.my_el_select{
  width: 117px;
  height: 28px;
  position: absolute;
  top: 0;
  bottom: 0;
  margin: auto;
}
.cart_item .column_4{
  padding: 67px 10px;
  height: 116px;
  width: 142px;
  line-height: 116px;
}

</style>

View Code

删除购物车中的商品信息

后端实现删除购物车的API接口

注意:

drf中,接受put,patch和post,接收请求体都使用request.data
      接受get,delete,接收参数，只能使用request.query_params,
原因是: http请求中.get,delete是没有请求体的.而post,put和patch有请求体

视图,代码:

from rest_framework.viewsets import ViewSet
from rest_framework.permissions import IsAuthenticated
from courses.models import Course
from rest_framework.response import Response
from rest_framework import status
from django_redis import get_redis_connection

class CartAPIViewSet(ViewSet):
    # permission_classes = [IsAuthenticated]
    def add_cart(self,request):
        """添加商品到购物车"""
        # ....

    def list(self, request):
        """购物车商品列表"""
        # ....

    def change_select_status(self,request):
        """切换商品勾选状态"""
        # ...

    def delete(self, request):
        """"删除购物车中的商品信息"""
        # 接受数据
        user_id = request.user.id
        course_id = request.query_params.get("course_id")

        # 验证数据
        try:
            course = Course.objects.get(pk=course_id, is_show=True, is_delete=False)
        except:
            return Response({"message":"对不起，操作的商品不存在"}, status=status.HTTP_400_BAD_REQUEST)

        # 操作redis
        redis_conn = get_redis_connection("cart")
        pipe = redis_conn.pipeline()
        pipe.multi()
        pipe.hdel("cart_%s" % user_id, course_id)
        pipe.srem("selected_%s" % user_id, course_id)
        pipe.execute()

        # 响应结果
        return Response({"message":"购物车删除商品成功！"}, status=status.HTTP_204_NO_CONTENT)

View Code

路由代码:

from django.urls import path
from . import views
urlpatterns = [
    path("", views.CartAPIViewSet.as_view({"post":"add_cart", "get":"list", "patch":"change_select_status","delete":"delete"}) ),
]

前端实现删除购物车商品功能

分析:
    "删除"按钮是在子组件中,但是我们不能在子组件内部删除自己,所以需要通知父组件删除自己
需要使用vue组件中子组件传递参数给给父组件

子组件CartItem.vue,代码:

<template>
    <div class="cart_item">
      <div class="cart_column column_1">
        <el-checkbox class="my_el_checkbox" v-model="course.selected"></el-checkbox>
      </div>
      <div class="cart_column column_2">
        <img :src="$settings.Host+course.course_img" alt="">
        <span><router-link :to="`/courses/${course.course_id}`">{{course.course_name}}</router-link></span>
      </div>
      <div class="cart_column column_3">
        <el-select v-model="expire" size="mini" placeholder="请选择购买有效期" class="my_el_select">
          <el-option label="1个月有效" value="30" key="30"></el-option>
          <el-option label="2个月有效" value="60" key="60"></el-option>
          <el-option label="3个月有效" value="90" key="90"></el-option>
          <el-option label="永久有效" value="10000" key="10000"></el-option>
        </el-select>
      </div>
      <div class="cart_column column_4">¥{{course.price}}</div>
      <div class="cart_column column_4" @click="cart_delete">删除</div>
    </div>
</template>

<script>
export default {
    name: "CartItem",
    props:["course"],
    watch:{
        "course.selected": function(){
            // 切换商品的勾选状态
            this.change_selected_status();
        }
    },
    data(){
      return {
        checked:false,
        expire: "1个月有效",
      }
    },
    created(){
        this.user_token = this.$settings.check_user_login();
    },
    methods:{
        change_selected_status(){
            // 切换商品的勾选状态
            this.$axios.patch(`${this.$settings.Host}/cart/`,{
                "course_id": this.course.course_id,
                  "selected": this.course.selected,
            },{
                headers:{ // 访问需要登录认证权限的api接口必须附带token到请求头中
                  "Authorization": "jwt " + this.user_token,
                }
            }).then(response=>{

            }).catch(error=>{
               this.$message.error("勾选状态切换失败！请刷新页面后重新尝试！");
            });
        },
        cart_delete(){
           // 让用户确认是否删除商品
           this.$confirm(`您确定要删除当前商品<${this.course.course_name}>么？`, '路飞学城', {
                  confirmButtonText: '删除',
                  cancelButtonText: '取消',
                  type: 'warning'
                }).then(() => { // 点击删除
                  this.deleteHandler();
                }).catch(() => {

                });
        },
        deleteHandler(){
            // 购物车删除商品
            this.$axios.delete(`${this.$settings.Host}/cart/`,{
                params:{
                    course_id: this.course.course_id,
                },
                headers:{
                    "Authorization": "jwt " + this.user_token,
                }
            }).then(response=>{
                // 通知父组件删除当前课程内容
                this.$emit("delete_cart");
                this.$message.success("操作成功！");
            }).catch(error=>{
                this.$message.error("操作失败！");
            });
        }

    }
}
</script>

<style scoped>
.cart_item::after{
  content: "";
  display: block;
  clear: both;
}
.cart_column{
  float: left;
  height: 250px;
}
.cart_item .column_1{
  width: 88px;
  position: relative;
}
.my_el_checkbox{
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  top: 0;
  margin: auto;
  width: 16px;
  height: 16px;
}
.cart_item .column_2 {
  padding: 67px 10px;
  width: 520px;
  height: 116px;
}
.cart_item .column_2 img{
  width: 175px;
  height: 115px;
  margin-right: 35px;
  vertical-align: middle;
}
.cart_item .column_3{
  width: 197px;
  position: relative;
  padding-left: 10px;
}
.my_el_select{
  width: 117px;
  height: 28px;
  position: absolute;
  top: 0;
  bottom: 0;
  margin: auto;
}
.cart_item .column_4{
  padding: 67px 10px;
  height: 116px;
  width: 142px;
  line-height: 116px;
}

</style>

View Code

父组件Cart.vue,代码:

<template>
    <div class="cart">
      <Header></Header>
      <div class="cart_info">
        <div class="cart_title">
          <span class="text">我的购物车</span>
          <span class="total">共4门课程</span>
        </div>
        <div class="cart_table">
          <div class="cart_head_row">
            <span class="doing_row"></span>
            <span class="course_row">课程</span>
            <span class="expire_row">有效期</span>
            <span class="price_row">单价</span>
            <span class="do_more">操作</span>
          </div>
          <div class="cart_course_list">
            <CartItem :key="key" v-for="course,key in course_list" :course="course" @delete_cart="deleteHandler(key)"></CartItem>
          </div>
          <div class="cart_footer_row">
            <span class="cart_select"><label> <el-checkbox v-model="checked"></el-checkbox><span>全选</span></label></span>
            <span class="cart_delete"><i class="el-icon-delete"></i> <span>删除</span></span>
            <span class="goto_pay">去结算</span>
            <span class="cart_total">总计：¥0.0</span>
          </div>
        </div>
      </div>
      <Footer></Footer>
    </div>
</template>

<script>
import Header from "./common/Header"
import Footer from "./common/Footer"
import CartItem from "./common/CartItem"
export default {
    name: "Cart",
    data(){
      return {
        user_token: "",
        checked: false,  // 实现全选功能的
        course_list: [], // 购物车中的商品列表
      }
    },
    created(){
      // 验证登录
      this.user_token = this.$settings.check_user_login();
      if(!this.user_token){
          let self = this;
          this.$alert("请登录以后再访问！","路飞学城",{
              callback(){
                  self.$router.push("/login");
              }
          });
          return ;
      }
      // 获取购物车商品列表
      this.get_cart();

    },
    methods:{
      get_cart(){
          // 获取购物车中的商品列表
          this.$axios.get(`${this.$settings.Host}/cart/`,{
              headers:{ // 访问需要登录认证权限的api接口必须附带token到请求头中
                  "Authorization": "jwt " + this.user_token,
              }
          }).then(response=>{
              this.course_list = response.data;
          }).catch(error=>{
              this.$message.error("无法获取购物车商品列表，请联系客服工作人员！");
          });
      },
      deleteHandler(key){
          // 前端实现删除商品信息
          this.course_list.splice(key,1);
      }
    },
    components:{
      Header,
      Footer,
      CartItem,
    }
}
</script>

<style scoped>
.cart_info{
  width: 1200px;
  margin: 0 auto 200px;
}
.cart_title{
  margin: 25px 0;
}
.cart_title .text{
  font-size: 18px;
  color: #666;
}
.cart_title .total{
  font-size: 12px;
  color: #d0d0d0;
}
.cart_table{
  width: 1170px;
}
.cart_table .cart_head_row{
  background: #F7F7F7;
  width: 100%;
  height: 80px;
  line-height: 80px;
  padding-right: 30px;
}
.cart_table .cart_head_row::after{
  content: "";
  display: block;
  clear: both;
}
.cart_table .cart_head_row .doing_row,
.cart_table .cart_head_row .course_row,
.cart_table .cart_head_row .expire_row,
.cart_table .cart_head_row .price_row,
.cart_table .cart_head_row .do_more{
  padding-left: 10px;
  height: 80px;
  float: left;
}
.cart_table .cart_head_row .doing_row{
  width: 78px;
}
.cart_table .cart_head_row .course_row{
  width: 530px;
}
.cart_table .cart_head_row .expire_row{
  width: 188px;
}
.cart_table .cart_head_row .price_row{
  width: 162px;
}
.cart_table .cart_head_row .do_more{
  width: 162px;
}

.cart_footer_row{
  padding-left: 30px;
  background: #F7F7F7;
  width: 100%;
  height: 80px;
  line-height: 80px;
}
.cart_footer_row .cart_select span{
  font-size: 18px;
  color: #666;
}
.cart_footer_row .cart_delete{
  margin-left: 58px;
}
.cart_delete .el-icon-delete{
  font-size: 18px;
}

.cart_delete span{
  margin-left: 15px;
  cursor: pointer;
  font-size: 18px;
  color: #666;
}
.cart_total{
  float: right;
  margin-right: 62px;
  font-size: 18px;
  color: #666;
}
.goto_pay{
  float: right;
  width: 159px;
  height: 80px;
  outline: none;
  border: none;
  background: #ffc210;
  font-size: 18px;
  color: #fff;
  text-align: center;
  cursor: pointer;
}
</style>

View Code