Python笔记_78_购物车实现_配置_后端API_前端提交数据_vuex组件_购物车列表页
文章目录
- 购物车实现
- 配置
- 创建子应用 cart
- 注册子应用cart
- 配置信息
- 添加课程商品到购物车的API接口实现
- 提供访问路由
- 前端提交课程到后端添加购物车数据
- 前端展示商品课程的总数
- vuex组件
- 安装vuex
- 把vuex注册到vue中
- 购物车列表页
- 后端提供获取购物车课程信息
- 前端请求并显示课程信息
- 切换勾选状态和课程有效期
购物车实现
配置
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
# 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，所以没有数量限制，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....}
添加课程商品到购物车的API接口实现
cart/views.py视图，代码：
from django.shortcuts import render
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
import logging
log = logging.getLogger("django")
from rest_framework.decorators import action
class CartAPIView(ViewSet):
"""读取多条数据"""
permission_classes = [IsAuthenticated, ]
@action(methods=["POST"],detail=False)
def add_course(self,request):
"""添加商品到购物车中"""
"""获取商品ID，用户ID，有效期选项，购物车勾选状态"""""
user_id = request.user.id
course_id = request.data.get("course_id")
is_selected = True # 勾选状态
expire = 0 # 默认为0，0表示永久有效
# 查找和验证数据
try:
course = Course.objects.get(is_delete=False, is_show=True, pk=course_id)
except:
return Response({"message": "对不起，您购买的商品不存在！"}, status=status.HTTP_400_BAD_REQUEST)
# 添加数据到购物车中
try:
redis = get_redis_connection("cart")
pip = redis.pipeline()
pip.multi()
# 保存商品信息到购物车中
pip.hset("cart_%s" % user_id, course_id, expire )
# 保存商品勾选状态到购物车中
pip.sadd("selected_%s" % user_id, course_id )
# 执行管道中命令
pip.execute()
# 获取当前用户的购物车中商品的数量
total = redis.hlen("cart_%s" % user_id)
except:
log.error("购物车商品添加失败，redis操作出错！")
return Response({"message":"商品添加失败，请联系客服工作人员！"},status=status.HTTP_507_INSUFFICIENT_STORAGE)
# 返回购物车的状态信息
return Response({"message":"添加商品成功!","total":total},status=status.HTTP_201_CREATED)
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 = []
from rest_framework.routers import DefaultRouter
router = DefaultRouter()
router.register("course",views.CartAPIView,"cart")
print(router.urls)
urlpatterns += router.urls
前端提交课程到后端添加购物车数据
component/Course.vue
<template>
<div class="detail">
<Header/>
<div class="main">
<div class="course-info">
<div class="wrap-left">
<videoPlayer v-if="course.course_video" class="video-player vjs-custom-skin"
ref="videoPlayer"
:playsinline="true"
:options="playerOptions"
@play="onPlayerPlay($event)"
@pause="onPlayerPause($event)"
>
videoPlayer>
<img v-if="!course.course_video" :src="course.course_img" alt="">
div>
<div class="wrap-right">
<h3 class="course-name">{{course.name}}h3>
<p class="data">{{course.students}}人在学 课程总时长：{{course.lessons}}课时/{{course.lessons==course.pub_lessons?'更新完成':`已更新${course.pub_lessons}课时`}} 难度：{{course.level_name}}p>
<div class="sale-time">
<p class="sale-type">限时免费p>
<p class="expire">距离结束：仅剩 01天 04小时 33分 <span class="second">08span> 秒p>
div>
<p class="course-price">
<span>活动价span>
<span class="discount">¥0.00span>
<span class="original">¥{{course.price}}span>
p>
<div class="buy">
<div class="buy-btn">
<button class="buy-now">立即购买button>
<button class="free">免费试学button>
div>
<div class="add-cart" @click="addCartHander"><img src="/static/image/cart-yellow.svg" alt="">加入购物车div>
div>
div>
div>
<div class="course-tab">
<ul class="tab-list">
<li :class="tabIndex==1?'active':''" @click="tabIndex=1">详情介绍li>
<li :class="tabIndex==2?'active':''" @click="tabIndex=2">课程章节 <span :class="tabIndex!=2?'free':''">(试学)span>li>
<li :class="tabIndex==3?'active':''" @click="tabIndex=3">用户评论 (42)li>
<li :class="tabIndex==4?'active':''" @click="tabIndex=4">常见问题li>
ul>
div>
<div class="course-content">
<div class="course-tab-list">
<div class="tab-item" v-if="tabIndex==1">
<div class="brief_box" v-html="course.real_brief">div>
div>
<div class="tab-item" v-if="tabIndex==2">
<div class="tab-item-title">
<p class="chapter">课程章节p>
<p class="chapter-length">共{{course.chapter_list.length}}章 {{course.lessons}}个课时p>
div>
<div class="chapter-item" v-for="chapter,key in course.chapter_list" :key="key">
<p class="chapter-title"><img src="/static/image/1.svg" alt="">第{{chapter.chapter}}章·{{chapter.name}}p>
<ul class="lesson-list">
<li class="lesson-item" v-for="lesson,key in chapter.lesson_list" :key="key">
<p class="name"><span class="index">{{chapter.chapter}}-{{key+1}}span> {{lesson.name}}<span class="free" v-if="lesson.free_trail">免费span>p>
<p class="time">{{lesson.duration}} <img src="/static/image/chapter-player.svg">p>
<button v-if="lesson.free_trail && lesson.section_type==2" class="try"><router-link :to="`/course/lesson/video/${lesson.id}/`">立即试学router-link>button>
<button v-if="lesson.free_trail && lesson.section_type==0" class="try"><router-link :to="`/course/lesson/doc/${lesson.id}/`">立即试学router-link>button>
<button v-if="lesson.free_trail && lesson.section_type==1" class="try"><router-link :to="`/course/lesson/exam/${lesson.id}/`">立即试学router-link>button>
<button v-if="!lesson.free_trail" class="try">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="/static/image/8268683.png">
<div class="name">
<p class="teacher-name">李泳谊p>
<p class="teacher-title">老男孩LInux学科带头人p>
div>
div>
<p class="narrative" >Linux运维技术专家，老男孩Linux金牌讲师，讲课风趣幽默、深入浅出、声音洪亮到爆炸p>
div>
div>
div>
div>
div>
<Footer/>
div>
template>
<script>
import Header from "./common/Header"
import Footer from "./common/Footer"
// 引入播放器组件
import {videoPlayer} from 'vue-video-player';
export default {
name: "Detail",
data(){
return {
course:{
id: 0, // 课程ID
},
tabIndex: 1, // 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: true, //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
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: "" //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。
},
total: 0,
}
},
created(){
// 获取路由参数
this.course.id = this.$route.params.course;
// 获取课程信息
this.get_course();
},
methods: {
onPlayerPlay(){
// alert("视频开始播放");
},
onPlayerPause(){
// alert("视频暂停播放");
},
get_course(){
// 获取课程详情信息
this.$axios.get(`${this.$settings.Host}/course/${this.course.id}/`).then(response=>{
this.course = response.data;
// 修改封面
this.playerOptions.poster = response.data.course_img;
// 修改视频地址
this.playerOptions.sources[0].src = response.data.course_video;
}).catch(error=>{
console.log(error);
// this.$router.go(-1);
});
},
addCartHander(){
let user_token = localStorage.user_token || sessionStorage.user_token;
if( !user_token ){
// 判断用户是否登录了
this.$confirm("对不起，您尚未登录！请登录后继续操作！","警告").then(()=>{
this.$router.push("/user/login");
});
}
// 添加商品到购物车
this.$axios.post(`${this.$settings.Host}/cart/course/add_course/`,{
course_id: this.course.id,
},{
headers:{
"Authorization": "jwt " + user_token,
}
}).then(response=>{
this.total = response.data.total;
this.$message("成功添加商品到购物车中");
}).catch(error=>{
console.log(error.response);
});
}
},
components:{
Header,
Footer,
videoPlayer,
}
}
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;
}
.try a{
color: #fff;
}
style>
后端返回了当前用户的购物车商品总数,所以我们要把这个值展示到页面头部中,但是这个页面头部,是大部分页面的公共头部,所以我们需要把这个值保存到一个全局访问的地方,让所有的页面加载头部时,都可以共享访问
前端展示商品课程的总数
获取商品总数是在头部组件中使用到，并展示出来，但是我们后面可以在购物车中，或者商品课程的详情页中修改购物车中商品总数，因为对于一些数据，需要在多个组件中即时共享，这种情况，我们可以使用本地存储来完成，但是也可以通过vuex组件来完成这个功能。
vuex组件
安装vuex
npm install -S vuex
把vuex注册到vue中
-
在
src目录下创建store目录，并在store目录下创建一个index.js文件，src/store/index.js文件代码：import Vue from 'vue' import Vuex from 'vuex' Vue.use(Vuex); export default new Vuex.Store({ // 数据仓库,类似vue里面的data state: { }, // 数据操作方法,类似vue里面的methods mutations: { } }); -
把上面
index.js中创建的store对象注册到main.js的vue中。
// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'
import store from './store/index';
Vue.config.productionTip = false;
// elementUI 导入
import ElementUI from 'element-ui';
import 'element-ui/lib/theme-chalk/index.css';
// 调用插件
Vue.use(ElementUI);
// 加载全局初始化样式
import "../static/css/reset.css";
// 加载项目的自定义配置文件
import settings from "./settings"
// 把全局配置设置一个属性
Vue.prototype.$settings = settings;
// 加载ajax组件
import axios from 'axios';
// 允许ajax发送请求时附带cookie
axios.defaults.withCredentials = true;
Vue.prototype.$axios = axios; // 把对象挂载vue中
// 导入极验验证
import "../static/js/gt.js"
// vue-video播放器
require('video.js/dist/video-js.css');
require('vue-video-player/src/custom-theme.css');
import VideoPlayer from 'vue-video-player'
Vue.use(VideoPlayer);
/* eslint-disable no-new */
new Vue({
el: '#app',
router,
store,
components: { App },
template: '接下来，我们就可以在组件使用到store中state里面保存的共享数据了.
先到vuex中添加数据，store/inde.js，代码
import Vue from 'vue'
import Vuex from 'vuex'
Vue.use(Vuex);
export default new Vuex.Store({
// 数据仓库,类似vue里面的data
state: {
// 购物车数据
cart:{
total: 0,
}
},
// 数据操作方法,类似vue里面的methods
mutations: {
}
});
在Header.vue头部组件中，直接读取store里面的数据
<div v-if="token" class="login-bar full-right">
<div class="shop-cart full-left">
<span class="shop-cart-total">{{$store.state.cart.total}}span>
// this是可以省略不写。
<div v-if="token" class="login-bar full-right">
<div class="shop-cart full-left">
<span class="shop-cart-total">{{$store.state.cart.total}}span>
在store/index.js中新增mutations的方法，代码：
import Vue from 'vue'
import Vuex from 'vuex'
Vue.use(Vuex);
export default new Vuex.Store({
// 数据仓库,类似vue里面的data
state: {
// 购物车数据
cart:{
total: 0,
}
},
// 数据操作方法,类似vue里面的methods
mutations: {
// 修改购物车的商品总数
get_total(state,data){
state.cart.total = data;
}
}
});
我们就可以在Detail.vue课程详情的组件调用上面的get_total方法， 修改商品总数。
<template>
<div class="detail">
<Header/>
<div class="main">
<div class="course-info">
<div class="wrap-left">
<videoPlayer v-if="course.course_video" class="video-player vjs-custom-skin"
ref="videoPlayer"
:playsinline="true"
:options="playerOptions"
@play="onPlayerPlay($event)"
@pause="onPlayerPause($event)"
>
videoPlayer>
<img v-if="!course.course_video" :src="course.course_img" alt="">
div>
<div class="wrap-right">
<h3 class="course-name">{{course.name}}h3>
<p class="data">{{course.students}}人在学 课程总时长：{{course.lessons}}课时/{{course.lessons==course.pub_lessons?'更新完成':`已更新${course.pub_lessons}课时`}} 难度：{{course.level_name}}p>
<div class="sale-time">
<p class="sale-type">限时免费p>
<p class="expire">距离结束：仅剩 01天 04小时 33分 <span class="second">08span> 秒p>
div>
<p class="course-price">
<span>活动价span>
<span class="discount">¥0.00span>
<span class="original">¥{{course.price}}span>
p>
<div class="buy">
<div class="buy-btn">
<button class="buy-now">立即购买button>
<button class="free">免费试学button>
div>
<div class="add-cart" @click="addCartHander"><img src="/static/image/cart-yellow.svg" alt="">加入购物车div>
div>
div>
div>
<div class="course-tab">
<ul class="tab-list">
<li :class="tabIndex==1?'active':''" @click="tabIndex=1">详情介绍li>
<li :class="tabIndex==2?'active':''" @click="tabIndex=2">课程章节 <span :class="tabIndex!=2?'free':''">(试学)span>li>
<li :class="tabIndex==3?'active':''" @click="tabIndex=3">用户评论 (42)li>
<li :class="tabIndex==4?'active':''" @click="tabIndex=4">常见问题li>
ul>
div>
<div class="course-content">
<div class="course-tab-list">
<div class="tab-item" v-if="tabIndex==1">
<div class="brief_box" v-html="course.real_brief">div>
div>
<div class="tab-item" v-if="tabIndex==2">
<div class="tab-item-title">
<p class="chapter">课程章节p>
<p class="chapter-length">共{{course.chapter_list.length}}章 {{course.lessons}}个课时p>
div>
<div class="chapter-item" v-for="chapter,key in course.chapter_list" :key="key">
<p class="chapter-title"><img src="/static/image/1.svg" alt="">第{{chapter.chapter}}章·{{chapter.name}}p>
<ul class="lesson-list">
<li class="lesson-item" v-for="lesson,key in chapter.lesson_list" :key="key">
<p class="name"><span class="index">{{chapter.chapter}}-{{key+1}}span> {{lesson.name}}<span class="free" v-if="lesson.free_trail">免费span>p>
<p class="time">{{lesson.duration}} <img src="/static/image/chapter-player.svg">p>
<button v-if="lesson.free_trail && lesson.section_type==2" class="try"><router-link :to="`/course/lesson/video/${lesson.id}/`">立即试学router-link>button>
<button v-if="lesson.free_trail && lesson.section_type==0" class="try"><router-link :to="`/course/lesson/doc/${lesson.id}/`">立即试学router-link>button>
<button v-if="lesson.free_trail && lesson.section_type==1" class="try"><router-link :to="`/course/lesson/exam/${lesson.id}/`">立即试学router-link>button>
<button v-if="!lesson.free_trail" class="try">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="/static/image/8268683.png">
<div class="name">
<p class="teacher-name">李泳谊p>
<p class="teacher-title">老男孩LInux学科带头人p>
div>
div>
<p class="narrative" >Linux运维技术专家，老男孩Linux金牌讲师，讲课风趣幽默、深入浅出、声音洪亮到爆炸p>
div>
div>
div>
div>
div>
<Footer/>
div>
template>
<script>
import Header from "./common/Header"
import Footer from "./common/Footer"
// 引入播放器组件
import {videoPlayer} from 'vue-video-player';
export default {
name: "Detail",
data(){
return {
course:{
id: 0, // 课程ID
},
tabIndex: 1, // 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: true, //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
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: "" //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(){
// 获取路由参数
this.course.id = this.$route.params.course;
// 获取课程信息
this.get_course();
},
methods: {
onPlayerPlay(){
// alert("视频开始播放");
},
onPlayerPause(){
// alert("视频暂停播放");
},
get_course(){
// 获取课程详情信息
this.$axios.get(`${this.$settings.Host}/course/${this.course.id}/`).then(response=>{
this.course = response.data;
// 修改封面
this.playerOptions.poster = response.data.course_img;
// 修改视频地址
this.playerOptions.sources[0].src = response.data.course_video;
}).catch(error=>{
console.log(error);
// this.$router.go(-1);
});
},
addCartHander(){
let user_token = localStorage.user_token || sessionStorage.user_token;
if( !user_token ){
// 判断用户是否登录了
this.$confirm("对不起，您尚未登录！请登录后继续操作！","警告").then(()=>{
this.$router.push("/user/login");
});
}
// 添加商品到购物车
this.$axios.post(`${this.$settings.Host}/cart/course/add_course/`,{
course_id: this.course.id,
},{
headers:{
"Authorization": "jwt " + user_token,
}
}).then(response=>{
localStorage.user_total = response.data.total;
// 把购物车中的商品总数保存到vuex中
this.$store.commit("get_total",response.data.total);
this.$message("成功添加商品到购物车中");
}).catch(error=>{
console.log(error.response);
});
}
},
components:{
Header,
Footer,
videoPlayer,
}
}
script>
购物车列表页
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：¥0.0span>
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{
margin-left: -7px;
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>
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-cover.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">¥499.0div>
<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>
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,
},
// ....
]
})
后端提供获取购物车课程信息
cart/views.py
from django.shortcuts import render
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
from django.conf import settings
import logging
log = logging.getLogger("django")
from rest_framework.decorators import action
class CartAPIView(ViewSet):
"""读取多条数据"""
# permission_classes = [IsAuthenticated, ]
@action(methods=["POST"],detail=False)
def add_course(self,request):
"""添加商品到购物车中"""
"""获取商品ID，用户ID，有效期选项，购物车勾选状态"""""
user_id = request.user.id
course_id = request.data.get("course_id")
is_selected = True # 勾选状态
expire = 0 # 默认为0，0表示永久有效
# 查找和验证数据
try:
course = Course.objects.get(is_delete=False, is_show=True, pk=course_id)
except:
return Response({"message": "对不起，您购买的商品不存在！"}, status=status.HTTP_400_BAD_REQUEST)
# 添加数据到购物车中
try:
redis = get_redis_connection("cart")
pip = redis.pipeline()
pip.multi()
# 保存商品信息到购物车中
pip.hset("cart_%s" % user_id, course_id, expire )
# 保存商品勾选状态到购物车中
pip.sadd("selected_%s" % user_id, course_id )
# 执行管道中命令
pip.execute()
# 获取当前用户的购物车中商品的数量
total = redis.hlen("cart_%s" % user_id)
except:
log.error("购物车商品添加失败，redis操作出错！")
return Response({"message":"商品添加失败，请联系客服工作人员！"},status=status.HTTP_507_INSUFFICIENT_STORAGE)
# 返回购物车的状态信息
return Response({"message":"添加商品成功!","total":total},status=status.HTTP_201_CREATED)
@action(methods=["get"],detail=False)
def get(self,request):
"""购物车商品列表"""
user_id = 1 # request.user.id
redis = get_redis_connection("cart")
# 从hash里面读取购物车基本信息
cart_course_list = redis.hgetall("cart_%s" % user_id)
# 从set集合中查询所有已经勾选的商品ID
cart_selected_list = redis.smembers("selected_%s" % user_id)
# 如果提取到的商品购物车信息为空！，则直接返回空列表
if len(cart_course_list) < 1:
return Response([])
data = []
# 苟泽我们就要组装商品课程新返回给客户端
for course_bytes, expire_bytes in cart_course_list.items():
# print("课程ID", course_bytes)
# print("有效期", expire_bytes)
course_id = course_bytes.decode()
try:
course = Course.objects.get(pk=course_id)
except Course.DoesNotExist:
# 当前商品不存在！
pass
data.append({
"id": course_id,
"name": course.name,
"course_img": settings.DOMAIL_IMAGE_URL + course.course_img.url,
"price": course.price,
"is_selected": True if course_bytes in cart_selected_list else False
})
return Response(data)
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{{$store.state.total}}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 v-for="cart in cart_list" :cart="cart" :key="cart.id">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：¥0.0span>
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 {
cart_list: [], // 购物车的商品信息
checked: false,
}
},
created(){
this.user_token = this.check_user_login();
this.get_cart();
},
methods:{
check_user_login(){
// 检查用户是否登录了
let user_token = localStorage.user_token || sessionStorage.user_token;
if( !user_token ){
// 判断用户是否登录了
this.$confirm("对不起，您尚未登录！请登录后继续操作！","警告").then(()=>{
this.$router.push("/user/login");
});
}
return user_token;
},
get_cart(){
this.$axios.get(`${this.$settings.Host}/cart/course/get`,{
headers:{
"Authorization": "jwt " + this.user_token,
}
}).then(response=>{
this.cart_list = response.data;
}).catch(error=>{
console.log( error.response )
})
}
},
components:{
Header,
Footer,
CartItem,
}
}
script>
<style scoped>
...
style>
CartItem.vue
<template>
<div class="cart_item">
<div class="cart_column column_1">
<el-checkbox class="my_el_checkbox" v-model="cart.is_selected">el-checkbox>
div>
<div class="cart_column column_2">
<img :src="cart.course_img" alt="">
<span><router-link :to="`/course/${cart.id}`">{{cart.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">¥{{cart.price.toFixed(2)}}div>
<div class="cart_column column_4">删除div>
div>
template>
<script>
export default {
name: "CartItem",
props:["cart"],
data(){
return {
checked:false,
expire: "1个月有效",
}
}
}
script>
<style scoped>
...
style>
切换勾选状态和课程有效期
后端提供修改勾选状态的接口
视图代码:
def put(self,request):
"""修改购物车中的商品信息"""
user_id = request.user.id
course_id = request.data.get("course_id")
try:
course_info = Course.objects.get(pk=course_id)
except:
return Response({"message": "请求有误，请联系客服"}, status=status.HTTP_507_INSUFFICIENT_STORAGE)
redis = get_redis_connection("cart")
# 操作商品信息之前,必须先确保当前课程在购物车中
try:
rs = redis.hget("cart_%s" % user_id, course_id)
if rs is None:
raise Exception
except:
return Response({"message": "请求有误，请联系客服"}, status=status.HTTP_507_INSUFFICIENT_STORAGE)
# 修改勾选状态
selected = request.data.get("selected",None)
if selected is not None:
if selected == True:
redis.sadd("cart_select_%s" % user_id, course_info.id)
else:
redis.srem("cart_select_%s" % user_id, course_info.id)
# 修改有效期
course_expire = request.data.get("course_expire",None)
if course_expire is not None:
redis.hset("cart_%s" % user_id, course_info.id, course_expire )
return Response({"message":"ok"}, status=status.HTTP_200_OK)
CartItem.vue
<template>
<div class="cart-item">
<el-row>
<el-col :span="2" class="checkbox"><el-checkbox v-model="course.selected" :checked="course.selected" name="type">el-checkbox>el-col>
<el-col :span="10" class="course-info">
<img :src="this.$settings.host+course.course_img" alt="">
<span>{{course.name}}span>
el-col>
<el-col :span="4">
<el-select v-model="course.course_expire">
<el-option v-for="item in options" :key="item.value" :label="item.label" :value="item.value">el-option>
el-select>
el-col>
<el-col :span="4" class="course-price">¥{{course.price}}el-col>
<el-col :span="4" class="course-delete"><span @click="removeCartHander">删除span>el-col>
el-row>
div>
template>
<script>
export default {
name:"CartItem",
props:["course"],
data(){
return {
token: localStorage.token || sessionStorage.token,
user_id: localStorage.user_id || sessionStorage.user_id,
options:[ // 有效期
{value:30,label:"一个月有效"},
{value:60,label:"二个月有效"},
{value:90,label:"三个月有效"},
{value:0,label:"永久有效"},
]
}
},
methods:{
removeCartHander(){
// 从购物车中删除商品信息
this.$axios.delete(this.$settings.host+"/course/cart/",{
course_id: this.course.course_id,
},{
headers:{
// 附带已经登录用户的jwt token 提供给后端,一定不能疏忽这个空格
'Authorization':'JWT '+this.token
},
}).then(response=>{
console.log(response.data)
}).catch(error=>{
console.log(error.response)
});
},
},
watch:{
"course.course_expire": function(value){
// 切换当前课程的有效期
this.$axios.put(this.$settings.host+"/cart/course/",{
course_id: this.course.course_id,
course_expire: value
},{
headers:{
// 附带已经登录用户的jwt token 提供给后端,一定不能疏忽这个空格
'Authorization':'JWT '+this.token
},
}).then(response=>{
console.log(response.data)
}).catch(error=>{
console.log(error.response)
});
},
"course.selected": function (value) {
// 切换当前课程的勾选状态
this.$axios.put(this.$settings.host+"/cart/course/",{
course_id: this.course.course_id,
selected: value
},{
headers:{
// 附带已经登录用户的jwt token 提供给后端,一定不能疏忽这个空格
'Authorization':'JWT '+this.token
},
}).then(response=>{
console.log(response.data)
}).catch(error=>{
console.log(error.response)
});
}
}
}
script>
<style scoped>
.cart-item{
height: 250px;
}
.cart-item .el-row{
height: 100%;
}
.course-delete{
font-size: 14px;
color: #ffc210;
cursor: pointer;
}
.el-checkbox,.el-select,.course-price,.course-delete{
display: flex;
align-items: center;
justify-content: center;
height: 100%;
}
.el-checkbox{
padding-top: 55px;
}
.el-select{
padding-top: 45px;
width: 118px;
height: 28px;
font-size: 12px;
color: #666;
line-height: 18px;
}
.course-info img{
width: 175px;
height: 115px;
margin-right: 35px;
vertical-align: middle;
}
.cart-item .el-col{
padding: 67px 10px;
vertical-align: middle!important;
}
.course-info{
}
style>