课程管理模块-课程详情页显示
课程详情页 views/Info.vue，代码：
<template>
<div class="detail">
<Header/>
<div class="main">
<div class="course-info">
<div class="wrap-left">
<!-- 课程封面或封面商品 -->
</div>
<div class="wrap-right">
<h3 class="course-name">Linux系统基础5周入门精讲</h3>
<p class="data">23475人在学 课程总时长：148课时/180小时 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">¥29.00</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"><img src="../assets/cart-yellow.svg" alt="">加入购物车</div>
</div>
</div>
</div>
<div class="course-tab">
<ul class="tab-list">
<li :class="state.tabIndex===1?'active':''" @click="state.tabIndex=1">详情介绍</li>
<li :class="state.tabIndex===2?'active':''" @click="state.tabIndex=2">课程章节 <span :class="state.tabIndex!==2?'free':''">(试学)</span></li>
<li :class="state.tabIndex===3?'active':''" @click="state.tabIndex=3">用户评论 (42)</li>
<li :class="state.tabIndex===4?'active':''" @click="state.tabIndex=4">常见问题</li>
</ul>
</div>
<div class="course-content">
<div class="course-tab-list">
<div class="tab-item" v-if="state.tabIndex===1">
<p><img alt="" src="//hcdn2.luffycity.com/media/frontend/activity/详情页_01.png"></p>
</div>
<div class="tab-item" v-if="state.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">
<p class="chapter-title"><img src="../assets/1.svg" alt="">第1章·Linux硬件基础</p>
<ul class="lesson-list">
<li class="lesson-item">
<p class="name"><span class="index">1-1</span> 课程介绍-学习流程<span class="free">免费</span></p>
<p class="time">07:30 <img src="../assets/chapter-player.svg"></p>
<button class="try">立即试学</button>
</li>
<li class="lesson-item">
<p class="name"><span class="index">1-2</span> 服务器硬件-详解<span class="free">免费</span></p>
<p class="time">07:30 <img src="../assets/chapter-player.svg"></p>
<button class="try">立即试学</button>
</li>
</ul>
</div>
<div class="chapter-item">
<p class="chapter-title"><img src="../assets/1.svg" alt="">第2章·Linux发展过程</p>
<ul class="lesson-list">
<li class="lesson-item">
<p class="name"><span class="index">2-1</span> 操作系统组成-Linux发展过程</p>
<p class="time">07:30 <img src="../assets/chapter-player.svg"></p>
<button class="try">立即购买</button>
</li>
<li class="lesson-item">
<p class="name"><span class="index">2-2</span> 自由软件-GNU-GPL核心讲解</p>
<p class="time">07:30 <img src="../assets/chapter-player.svg"></p>
<button class="try">立即购买</button>
</li>
</ul>
</div>
</div>
<div class="tab-item" v-if="state.tabIndex===3">
用户评论
</div>
<div class="tab-item" v-if="state.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="../assets/avatar.jpg">
<div class="name">
<p class="teacher-name">Avrion</p>
<p class="teacher-title">老男孩LInux学科带头人</p>
</div>
</div>
<p class="narrative" >路飞学城高级讲师，曾参与新加坡南洋理工大学大数据医疗相关项目，就职过多家互联网企业，有着多年开发经验，精通java,python,go等编程语言</p>
</div>
</div>
</div>
</div>
</div>
<Footer/>
</div>
</template>
<script setup>
import {reactive,ref,watch} from "vue"
import {useRoute} from "vue-router"
import Header from "../components/Header.vue"
import Footer from "../components/Footer.vue"
let route = useRoute()
const state = reactive({
course_id: route.params.id,
tabIndex: 2,
})
</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>
路由显示，router/index.js，代码：
import {createRouter, createWebHistory, createWebHashHistory} from 'vue-router' import store from "../store"; // 路由列表 const routes = [ { meta:{ title: "luffy2.0-站点首页", keepAlive: true }, path: '/', // uri访问地址 name: "Home", component: ()=> import("../views/Home.vue") }, { meta:{ title: "luffy2.0-用户登录", keepAlive: true }, path:'/login', // uri访问地址 name: "Login", component: ()=> import("../views/Login.vue") }, { meta:{ title: "luffy2.0-用户注册", keepAlive: true }, path: '/register', name: "Register", // 路由名称 component: ()=> import("../views/Register.vue"), // uri绑定的组件页面 }, { meta:{ title: "luffy2.0-个人中心", keepAlive: true, authorization: true, }, path: '/user', name: "User", component: ()=> import("../views/User.vue"), }, { meta:{ title: "luffy2.0-课程列表", keepAlive: true, }, path: '/project', name: "Course", component: ()=> import("../views/Course.vue"), }, { meta:{ title: "luffy2.0-课程详情", keepAlive: true }, path: '/project/:id', // :id vue的路径参数，代表了课程的ID name: "Info", component: ()=> import("../views/Info.vue"), } ] // 路由对象实例化 const router = createRouter({ // history, 指定路由的模式 history: createWebHistory(), // 路由列表 routes, }); // 导航守卫 router.beforeEach((to, from, next)=>{ document.title=to.meta.title // 登录状态验证 if (to.meta.authorization && !store.getters.getUserInfo) { next({"name": "Login"}) }else{ next() } }) // 暴露路由对象 export default router
课程列表的组件中， 打通点击前往详情页的链接地址，
views/Course.vue，代码：
<ul class="course-list clearfix"> <li class="course-card" v-for="course_info in course.course_list"> <router-link :to="`/project/${course_info.id}`"> <div class="img"><img :src="course_info.course_cover" alt=""></div> <p class="title ellipsis2">{{course_info.name}}</p> <p class="one"> <span>{{course_info.get_level_display}} · {{course_info.students}}人报名</span> <span class="discount r"> <i class="name" v-if="course_info.discount.type">{{course_info.discount.type}}</i> <i class="countdown" v-if="course_info.discount.expire">{{parseInt(course_info.discount.expire/86400)}}<span class="day">天</span>{{fill0(parseInt(course_info.discount.expire/3600%24))}}:{{fill0(parseInt(course_info.discount.expire/60%60))}}:{{fill0(parseInt(course_info.discount.expire%60))}}</i> </span> </p> <p class="two clearfix"> <span class="price l red bold" v-if="course_info.discount.price">￥{{parseFloat(course_info.discount.price).toFixed(2)}}</span> <span class="price l red bold" v-else>￥{{parseFloat(course_info.price).toFixed(2)}}</span> <span class="origin-price l delete-line" v-if="course_info.discount.price">￥{{parseFloat(course_info.price).toFixed(2)}}</span> <span class="add-shop-cart r"><img class="icon imv2-shopping-cart" src="../assets/cart2.svg">加购物车</span> </p> </router-link> </li> </ul>
提交代码版本
cd /home/moluo/Desktop/luffycity/ git add . git commit -m "feature: 客户端展示课程详情页" git push
视频播放器
针对客户端的课程详情页的左上角内容，我们可以显示课程的详情图片，如果有课程的介绍视频，也可以优先显示视频，
当然播放视频，肯定需要对应的播放器插件。市面上很多：百度云、腾讯云、网易云、阿里云、又拍云、七牛云或者其他第三方。
OK，接下来使用的播放器组件，选择使用了阿里云播放器（vue-alipayer视频播放组件），所以我们需要先预安装。
vue-alipayer地址：https://github.com/liho98/vue-aliplayer-v2
演示效果：https://player.alicdn.com/aliplayer/index.html
安装依赖
cd /home/moluo/Desktop/luffycity/luffycityweb/
yarn add vue-aliplayer-v3
Info.vue页面组件中调用播放器组件，代码：
<div class="wrap-left"> <!-- 课程封面或封面商品 --> <AliPlayerV3 ref="player" class="h-64 md:h-96 w-full rounded-lg" style="height: 100%; width: 100%;" :options="options" @play="onPlay($event)" @pause="onPause($event)" @playing="onPlaying($event)" /> </div>
<script setup> import {reactive,ref,watch} from "vue" import {useRoute} from "vue-router" import Header from "../components/Header.vue" import Footer from "../components/Footer.vue" import { AliPlayerV3 } from "vue-aliplayer-v3" let route = useRoute() let player = ref(null) const state = reactive({ course_id: route.params.id, tabIndex: 2, }) const options = reactive({ source: "/src/assets/1.mp4", cover: "/src/assets/course-1.png", autoplay: false, preload: true, isLive: false, //切换为直播流的时候必填true // format: 'm3u8' //切换为直播流的时候必填 }) const onPlay = (event)=>{ console.log("播放视频"); console.log(player.value.getCurrentTime()); } const onPause = (event)=>{ console.log("暂停播放"); console.log(player.value.getCurrentTime()); } const onPlaying = (event)=>{ console.log("播放中"); console.log(player.value.getCurrentTime()); } </script>
提交代码版本
cd /home/moluo/Desktop/luffycity/ git add . git commit -m "feature: 客户端基于aliplayer播放器插件展示课程封面图片与视频" git push
后端提供课程详情页数据接口
courses/serializers.py，序列化器代码:
from .models import Teacher class CourseTearchModelSerializer(serializers.ModelSerializer): """课程老师信息""" class Meta: model = Teacher fields = ["id", "name", "avatar", "role", "get_role_display", "title", "signature", "brief"] class CourseRetrieveModelSerializer(serializers.ModelSerializer): """课程详情的序列化器""" direction_name = serializers.CharField(source="direction.name") # diretion = serializers.SlugRelatedField(read_only=True, slug_field='name') category_name = serializers.CharField(source="category.name") # 序列化器嵌套 teacher = CourseTearchModelSerializer() class Meta: model = Course fields = [ "name", "course_cover", "course_video", "level", "get_level_display", "description", "pub_date", "status", "get_status_display", "students","discount", "lessons", "pub_lessons", "price", "direction", "direction_name", "category", "category_name", "teacher" ]
视图代码：
from rest_framework.generics import RetriecveAPIView from .models import Course from .serializers import CourseRetrieveModelSerializer class CourseRetrieveAPIView(RetrieveAPIView): """课程详情信息""" queryset = Course.objects.filter(is_show=True, is_delete=False).all() serializer_class = CourseRetrieveModelSerializer
路由代码:
urlpatterns = [ # 。。。。 re_path("^(?P<pk>\d+)/$", views.CourseRetrieveAPIView.as_view()), ]
提交代码版本
cd /home/moluo/Desktop/luffycity/ git add . git commit -m "feature: 服务端提供课程详情的api接口" git push
客户端请求api接口并展示课程详情信息
src/api/course.js，代码：
import http from "../utils/http"; import {reactive, ref} from "vue" const course = reactive({ // 中间代码省略... course_id: null, // 课程ID info: { // 课程详情信息 teacher:{}, // 课程相关的老师信息 discount:{ // 课程相关的折扣信息 type: "" } }, tabIndex: 1, // 课程详情页中默认展示的课程信息的选项卡 // 中间代码省略... // 获取课程详情 get_course(){ return http.get(`/courses/${this.course_id}`) }, }) export default course;
views/Info.vue，代码：
<template>
<div class="detail">
<Header/>
<div class="main">
<div class="course-info">
<div class="wrap-left">
<!-- 课程封面或封面商品 -->
<AliPlayerV3
ref="player"
class="h-64 md:h-96 w-full rounded-lg"
style="height: 100%; width: 100%;"
:source="course.info.course_video"
:cover="course.info.course_cover"
:options="options"
@play="onPlay($event)"
@pause="onPause($event)"
@playing="onPlaying($event)"
v-if="course.info.course_video"
/>
<img :src="course.info.course_cover" style="width: 100%;" alt="" v-else>
</div>
<div class="wrap-right">
<h3 class="course-name">{{course.info.name}}</h3>
<p class="data">{{course.info.students}}人在学 课程总时长：{{course.info.pub_lessons}}课时/{{course.info.lessons}}课时 难度：{{course.info.get_level_display}}</p>
<div class="sale-time" v-if="course.info.discount.type">
<p class="sale-type">{{course.info.discount.type}}</p>
<p class="expire" v-if="course.info.discount.expire>0">距离结束：仅剩 {{parseInt(course.info.discount.expire/86400)}}天 {{fill0(parseInt(course.info.discount.expire/3600%24))}}小时 {{fill0(parseInt(course.info.discount.expire/60%60))}}分 <span class="second">{{fill0(parseInt(course.info.discount.expire%60))}}</span> 秒</p>
</div>
<div class="sale-time" v-if="!course.info.discount.type">
<p class="sale-type">课程价格 ¥{{parseFloat(course.info.price).toFixed(2)}}</p>
</div>
<p class="course-price" v-if="course.info.discount.price">
<span>活动价</span>
<span class="discount">¥{{parseFloat(course.info.discount.price).toFixed(2)}}</span>
<span class="original">¥{{parseFloat(course.info.price).toFixed(2)}}</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"><img src="../assets/cart-yellow.svg" alt="">加入购物车</div>
</div>
</div>
</div>
<div class="course-tab">
<ul class="tab-list">
<li :class="course.tabIndex===1?'active':''" @click="course.tabIndex=1">详情介绍</li>
<li :class="course.tabIndex===2?'active':''" @click="course.tabIndex=2">课程章节 <span :class="course.tabIndex!==2?'free':''">(试学)</span></li>
<li :class="course.tabIndex===3?'active':''" @click="course.tabIndex=3">用户评论 (42)</li>
<li :class="course.tabIndex===4?'active':''" @click="course.tabIndex=4">常见问题</li>
</ul>
</div>
<div class="course-content">
<div class="course-tab-list">
<div class="tab-item" v-if="course.tabIndex===1" v-html="course.info.description">
</div>
<div class="tab-item" v-if="course.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">
<p class="chapter-title"><img src="../assets/1.svg" alt="">第1章·Linux硬件基础</p>
<ul class="lesson-list">
<li class="lesson-item">
<p class="name"><span class="index">1-1</span> 课程介绍-学习流程<span class="free">免费</span></p>
<p class="time">07:30 <img src="../assets/chapter-player.svg"></p>
<button class="try">立即试学</button>
</li>
<li class="lesson-item">
<p class="name"><span class="index">1-2</span> 服务器硬件-详解<span class="free">免费</span></p>
<p class="time">07:30 <img src="../assets/chapter-player.svg"></p>
<button class="try">立即试学</button>
</li>
</ul>
</div>
<div class="chapter-item">
<p class="chapter-title"><img src="../assets/1.svg" alt="">第2章·Linux发展过程</p>
<ul class="lesson-list">
<li class="lesson-item">
<p class="name"><span class="index">2-1</span> 操作系统组成-Linux发展过程</p>
<p class="time">07:30 <img src="../assets/chapter-player.svg"></p>
<button class="try">立即购买</button>
</li>
<li class="lesson-item">
<p class="name"><span class="index">2-2</span> 自由软件-GNU-GPL核心讲解</p>
<p class="time">07:30 <img src="../assets/chapter-player.svg"></p>
<button class="try">立即购买</button>
</li>
</ul>
</div>
</div>
<div class="tab-item" v-if="course.tabIndex===3">
用户评论
</div>
<div class="tab-item" v-if="course.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="course.info.teacher.avatar">
<div class="name">
<p class="teacher-name">{{course.info.teacher.name}}</p>
<p class="teacher-title">{{course.info.teacher.get_role_display}}，{{course.info.teacher.title}}</p>
</div>
</div>
<div class="narrative" v-html="course.info.teacher.brief"></div>
</div>
</div>
</div>
</div>
</div>
<Footer/>
</div>
</template>
<script setup>
import {reactive,ref, watch} from "vue"
import {useRoute, useRouter} from "vue-router"
import Header from "../components/Header.vue"
import Footer from "../components/Footer.vue"
import { AliPlayerV3 } from "vue-aliplayer-v3"
import course from "../api/course"
import { ElMessage } from 'element-plus'
import {fill0} from "../utils/func";
let route = useRoute()
let router= useRouter()
let player = ref(null)
// 获取url地址栏上的课程ID
course.course_id = route.params.id;
// 简单判断课程ID是否合法
if(course.course_id > 0){
// 根据课程ID到服务端获取课程详情数据
course.get_course().then(response=>{
course.info = response.data;
clearInterval(course.timer);
course.timer = setInterval(()=>{
if(course.info.discount.expire && course.info.discount.expire>0){
course.info.discount.expire--
}
},1000);
}).catch(error=>{
ElMessage.error({
message: "非法的URL地址，无法获取课程信息！",
duration: 1000,
onClose(){
router.go(-1)
}
})
})
}else{
ElMessage.error({
message: "非法的URL地址，无法获取课程信息！",
duration: 1000,
onClose(){
router.go(-1)
}
})
}
// 阿里云播放器的选项参数
const options = reactive({
// source: "/src/assets/1.mp4",
// cover: "/src/assets/course-1.png",
autoplay: false, // 是否自动播放
preload: true, // 是否自动预加载
isLive: false, // 切换为直播流的时候必填true
// format: 'm3u8' // 切换为直播流的时候必填
})
const onPlay = (event)=>{
console.log("播放视频");
console.log(player.value.getCurrentTime()); // 当前视频播放时间
}
const onPause = (event)=>{
console.log("暂停播放");
console.log(player.value.getCurrentTime());
}
const onPlaying = (event)=>{
console.log("播放中");
console.log(player.value.getCurrentTime());
console.log(player.value.getDuration()); // 获取视频长度
}
</script>
提交代码版本
cd /home/moluo/Desktop/luffycity/ git add . git commit -m "feature: 客户端展示课程详情信息" git push
服务端提供课程对应的章节列表和课时列表信息
courses/models.py，给章节模型新增返回课时列表字段，代码：
class CourseChapter(BaseModel): """课程章节""" orders = models.SmallIntegerField(default=1, verbose_name="第几章") summary = RichTextUploadingField(blank=True, null=True, verbose_name="章节介绍") pub_date = models.DateField(auto_now_add=True, verbose_name="发布日期") course = models.ForeignKey("Course", related_name='chapter_list', on_delete=models.CASCADE, db_constraint=False, verbose_name="课程名称") class Meta: db_table = "fg_course_chapter" verbose_name = "课程章节" verbose_name_plural = verbose_name def __str__(self): return "%s-第%s章-%s" % (self.course.name, self.orders, self.name) # 自定义字段 def text(self): return self.__str__() # admin站点配置排序规则和显示的字段文本提示 text.short_description = "章节名称" text.allow_tags = True text.admin_order_field = "orders" def get_lesson_list(self): """返回当前章节的课时列表""" lesson_list = self.lesson_list.filter(is_deleted=False, is_show=True).order_by("orders").all() return [{ "id":lesson.id, "name":lesson.name, "orders":lesson.orders, "duration":lesson.duration, "lesson_type":lesson.lesson_type, "lesson_link":lesson.lesson_link, "free_trail":lesson.free_trail } for lesson in lesson_list]
courses.serializers，序列化器，代码：
from .models import CourseChapter class CourseChapterModelSerializer(serializers.ModelSerializer): """课程章节序列化器""" class Meta: model = CourseChapter fields = ["id", "orders", "name", "summary", "get_lesson_list"]
courses/views.py视图，代码：
from .models import CourseChapter from .serializers import CourseChapterModelSerializer class CourseChapterListAPIView(ListAPIView): """课程章节列表""" serializer_class = CourseChapterModelSerializer def get_queryset(self): """列表页数据""" course = int(self.kwargs.get("course", 0)) try: ret = Course.objects.filter(pk=course).all() except: return [] queryset = CourseChapter.objects.filter(course=course,is_show=True, is_deleted=False).order_by("orders", "id") return queryset.all()
courses.urls，路由，代码：
urlpatterns = [ # 。。。。 re_path("^(?P<course>\d+)/chapters/$", views.CourseChapterListAPIView.as_view()), ]
提交代码版本
cd /home/moluo/Desktop/luffycity/ git add . git commit -m "feature: 服务端提供课程对应的章节列表和课时列表信息" git push
客户端请求后端章节信息展示到页面中
src/api/course.js，代码：
import http from "../utils/http"; import {reactive, ref} from "vue" const course = reactive({ // 中间代码省略.... chapter_list: [], // 课程章节列表 // 中间代码省略.... get_course_chapters(){ // 获取指定课程的章节列表 return http.get(`/courses/${this.course_id}/chapters`) } }) export default course;
views/Info.vue，代码：
<div class="tab-item" v-if="course.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.info.lessons}}个课时</p> </div> <div class="chapter-item" v-for="chapter in course.chapter_list"> <p class="chapter-title"><img src="../assets/1.svg" alt="">第{{chapter.orders}}章·{{chapter.name}}</p> <div class="chapter-title" style="padding-left: 2.4rem;" v-if="chapter.summary" v-html="chapter.summary"></div> <ul class="lesson-list"> <li class="lesson-item" v-for="lesson in chapter.get_lesson_list"> <p class="name"> <span class="index">{{chapter.orders}}-{{lesson.orders}}</span> {{lesson.name}} <span class="free" v-if="lesson.free_trail">免费</span> </p> <p class="time">{{lesson.duration}} <img src="../assets/chapter-player.svg"></p> <button class="try" v-if="lesson.free_trail">立即试学</button> <button class="try" v-else>购买课程</button> </li> </ul> </div> </div>
<script setup> import {reactive,ref, watch} from "vue" import {useRoute, useRouter} from "vue-router" import Header from "../components/Header.vue" import Footer from "../components/Footer.vue" import { AliPlayerV3 } from "vue-aliplayer-v3" import course from "../api/course" import { ElMessage } from 'element-plus' import {fill0} from "../utils/func"; let route = useRoute() let router= useRouter() let player = ref(null) // 获取url地址栏上的课程ID course.course_id = route.params.id; // 简单判断课程ID是否合法 if(course.course_id > 0){ // 根据课程ID到服务端获取课程详情数据 course.get_course().then(response=> { course.info = response.data; clearInterval(course.timer); course.timer = setInterval(() => { if (course.info.discount.expire && course.info.discount.expire > 0) { course.info.discount.expire-- } }, 1000); }).catch(error=>{ ElMessage.error({ message: "非法的URL地址，无法获取课程信息！", duration: 1000, onClose(){ router.go(-1); } }) }) // 获取课程章节信息 course.get_course_chapters().then(response=>{ course.chapter_list = response.data }) }else{ ElMessage.error({ message: "非法的URL地址，无法获取课程信息！", duration: 1000, onClose(){ router.go(-1) } }) } // 阿里云播放器的选项参数 const options = reactive({ // source: "/src/assets/1.mp4", // cover: "/src/assets/course-1.png", autoplay: false, // 是否自动播放 preload: true, // 是否自动预加载 isLive: false, // 切换为直播流的时候必填true // format: 'm3u8' // 切换为直播流的时候必填 }) const onPlay = (event)=>{ console.log("播放视频"); console.log(player.value.getCurrentTime()); // 当前视频播放时间 } const onPause = (event)=>{ console.log("暂停播放"); console.log(player.value.getCurrentTime()); } const onPlaying = (event)=>{ console.log("播放中"); console.log(player.value.getCurrentTime()); console.log(player.value.getDuration()); // 获取视频长度 } </script>
服务端课程详情信息接口新增返回试学的判断状态。
courses.models，代码：
class Course(BaseModel): course_type = ( (0, '付费购买'), (1, '会员专享'), (2, '学位课程'), ) level_choices = ( (0, '初级'), (1, '中级'), (2, '高级'), ) status_choices = ( (0, '上线'), (1, '下线'), (2, '预上线'), ) # course_cover = models.ImageField(upload_to="course/cover", max_length=255, verbose_name="封面图片", blank=True, null=True) course_cover = StdImageField(variations={ 'thumb_1080x608': (1080, 608), # 高清图 'thumb_540x304': (540, 304), # 中等比例, 'thumb_108x61': (108, 61, True), # 小图(第三个参数表示保持图片质量), }, max_length=255, delete_orphans=True, upload_to="course/cover", null=True, verbose_name="封面图片",blank=True) course_video = models.FileField(upload_to="course/video", max_length=255, verbose_name="封面视频", blank=True, null=True) course_type = models.SmallIntegerField(choices=course_type,default=0, verbose_name="付费类型") level = models.SmallIntegerField(choices=level_choices, default=1, verbose_name="难度等级") description = RichTextUploadingField(null=True, blank=True, verbose_name="详情介绍") pub_date = models.DateField(auto_now_add=True, verbose_name="发布日期") period = models.IntegerField(default=7, verbose_name="建议学习周期(day)") attachment_path = models.FileField(max_length=1000, blank=True, null=True, verbose_name="课件路径") attachment_link = models.CharField(max_length=1000, blank=True, null=True, verbose_name="课件链接") status = models.SmallIntegerField(choices=status_choices, default=0, verbose_name="课程状态") students = models.IntegerField(default=0, verbose_name="学习人数") lessons = models.IntegerField(default=0, verbose_name="总课时数量") pub_lessons = models.IntegerField(default=0, verbose_name="已更新课时数量") price = models.DecimalField(max_digits=10,decimal_places=2, verbose_name="课程原价",default=0) recomment_home_hot = models.BooleanField(default=False, verbose_name="是否推荐到首页新课栏目") recomment_home_top = models.BooleanField(default=False, verbose_name="是否推荐到首页必学栏目") direction = models.ForeignKey("CourseDirection", related_name="course_list", on_delete=models.DO_NOTHING, null=True, blank=True, db_constraint=False, verbose_name="学习方向") category = models.ForeignKey("CourseCategory", related_name="course_list", on_delete=models.DO_NOTHING, null=True, blank=True, db_constraint=False, verbose_name="课程分类") teacher = models.ForeignKey("Teacher", related_name="course_list", on_delete=models.DO_NOTHING, null=True, blank=True, db_constraint=False, verbose_name="授课老师") class Meta: db_table = "fg_course_info" verbose_name = "课程信息" verbose_name_plural = verbose_name def __str__(self): return "%s" % self.name def course_cover_small(self): if self.course_cover: return mark_safe(f'<img style="border-radius: 0%;" src="{self.course_cover.thumb_108x61.url}">') return "" course_cover_small.short_description = "封面图片(108x61)" course_cover_small.allow_tags = True course_cover_small.admin_order_field = "course_cover" def course_cover_medium(self): if self.course_cover: return mark_safe(f'<img style="border-radius: 0%;" src="{self.course_cover.thumb_540x304.url}">') return "" course_cover_medium.short_description = "封面图片(540x304)" course_cover_medium.allow_tags = True course_cover_medium.admin_order_field = "course_cover" def course_cover_large(self): if self.course_cover: return mark_safe(f'<img style="border-radius: 0%;" src="{self.course_cover.thumb_1080x608.url}">') return "" course_cover_large.short_description = "封面图片(1080x608)" course_cover_large.allow_tags = True course_cover_large.admin_order_field = "course_cover" @property def discount(self): # todo 将来通过计算获取当前课程的折扣优惠相关的信息 import random return { "type": ["限时优惠","限时减免"].pop(random.randint(0,1)), # 优惠类型 "expire": random.randint(100000, 1200000), # 优惠倒计时 "price": float(self.price - random.randint(1,10) * 10), # 优惠价格 } def discount_json(self): # 必须转成字符串才能保存到es中。所以该方法提供给es使用的。 return json.dumps(self.discount) @property def can_free_study(self): """是否允许试学""" lesson_list = self.lesson_list.filter(is_deleted=False, is_show=True).order_by("orders").all() return len(lesson_list) > 0
courses/serializers.py，代码：
class CourseRetrieveModelSerializer(serializers.ModelSerializer): """课程详情的序列化器""" diretion_name = serializers.CharField(source="diretion.name") # diretion = serializers.SlugRelatedField(read_only=True, slug_field='name') category_name = serializers.CharField(source="category.name") # 序列化器嵌套 teacher = CourseTearchModelSerializer() class Meta: model = Course fields = [ "name", "course_cover", "course_video", "level", "get_level_display", "description", "pub_date", "status", c"get_status_display", "students","discount", "lessons", "pub_lessons", "price", "direction", "diretion_name", "category", "category_name", "teacher","can_free_study" ]
客户端直接根据con_free_study来判断是否显示试学。
views/Info.vue，代码：（这段代码先不加 ）
<ul class="tab-list"> <li :class="state.tabIndex===1?'active':''" @click="state.tabIndex=1">详情介绍</li> <li :class="state.tabIndex===2?'active':''" @click="state.tabIndex=2">课程章节 <span :class="state.tabIndex!==2?'free':''" v-if="course.con_free_study">(试学)</span></li> <li :class="state.tabIndex===3?'active':''" @click="state.tabIndex=3">用户评论 (42)</li> <li :class="state.tabIndex===4?'active':''" @click="state.tabIndex=4">常见问题</li> </ul>
后台添加模拟数据。
INSERT INTO luffycity.fg_course_chapter (id, name, is_deleted, is_show, created_time, updated_time, orders, summary, pub_date, course_id) VALUES (1, 'Typescript快速入门', 0, 1, '2022-03-21 05:39:39.925451', '2022-03-21 05:39:39.925775', 1, '<p>Typescript快速入门的相关概念以及基本安装和基本使用</p>', '2022-03-21', 1); INSERT INTO luffycity.fg_course_chapter (id, name, is_deleted, is_show, created_time, updated_time, orders, summary, pub_date, course_id) VALUES (2, 'Typescript的基本语法', 0, 1, '2022-03-21 05:40:38.672697', '2022-03-21 05:40:38.672749', 1, '<p>注释、数据类型、类型注解、函数、面向对象语法、泛型等</p>', '2022-03-21', 1); INSERT INTO luffycity.fg_course_lesson (id, name, is_deleted, is_show, created_time, updated_time, orders, lesson_type, lesson_link, duration, pub_date, free_trail, recomment, chapter_id, course_id) VALUES (1, 'Typescript基本介绍', 0, 1, '2022-03-21 05:41:47.975350', '2022-03-21 05:41:47.975495', 1, 2, 'https://luffycityoline.oss-cn-beijing.aliyuncs.com/uploads/course/video/1.mp4', '5:00', '2022-03-21 05:41:47.975554', 1, 1, 1, 1); INSERT INTO luffycity.fg_course_lesson (id, name, is_deleted, is_show, created_time, updated_time, orders, lesson_type, lesson_link, duration, pub_date, free_trail, recomment, chapter_id, course_id) VALUES (2, 'Typescript与javascript的关系', 0, 1, '2022-03-21 05:42:13.059002', '2022-03-21 05:42:13.059077', 2, 2, 'https://luffycityoline.oss-cn-beijing.aliyuncs.com/uploads/course/video/1.mp4', '3:00', '2022-03-21 05:42:13.059128', 1, 1, 1, 1); INSERT INTO luffycity.fg_course_lesson (id, name, is_deleted, is_show, created_time, updated_time, orders, lesson_type, lesson_link, duration, pub_date, free_trail, recomment, chapter_id, course_id) VALUES (3, 'Typescript基本安装', 0, 1, '2022-03-21 05:42:29.797695', '2022-03-21 05:42:29.797750', 3, 2, 'https://luffycityoline.oss-cn-beijing.aliyuncs.com/uploads/course/video/1.mp4', '10:00', '2022-03-21 05:42:29.797796', 1, 1, 1, 1); INSERT INTO luffycity.fg_course_lesson (id, name, is_deleted, is_show, created_time, updated_time, orders, lesson_type, lesson_link, duration, pub_date, free_trail, recomment, chapter_id, course_id) VALUES (4, 'Typescript快速使用', 0, 1, '2022-03-21 05:42:43.776543', '2022-03-21 05:42:43.776618', 4, 2, 'https://luffycityoline.oss-cn-beijing.aliyuncs.com/uploads/course/video/1.mp4', '10:00', '2022-03-21 05:42:43.776672', 1, 1, 1, 1); INSERT INTO luffycity.fg_course_lesson (id, name, is_deleted, is_show, created_time, updated_time, orders, lesson_type, lesson_link, duration, pub_date, free_trail, recomment, chapter_id, course_id) VALUES (5, 'Typescript的解释器基本使用', 0, 1, '2022-03-21 05:43:07.315028', '2022-03-21 05:43:07.315092', 5, 2, 'https://luffycityoline.oss-cn-beijing.aliyuncs.com/uploads/course/video/1.mp4', '10:00', '2022-03-21 05:43:07.315150', 1, 1, 1, 1); INSERT INTO luffycity.fg_course_lesson (id, name, is_deleted, is_show, created_time, updated_time, orders, lesson_type, lesson_link, duration, pub_date, free_trail, recomment, chapter_id, course_id) VALUES (6, 'Typescript的注释写法', 0, 1, '2022-03-21 05:43:43.696556', '2022-03-21 05:43:43.696611', 1, 2, 'https://luffycityoline.oss-cn-beijing.aliyuncs.com/uploads/course/video/1.mp4', '4:00', '2022-03-21 05:43:43.696656', 1, 0, 2, 1); INSERT INTO luffycity.fg_course_lesson (id, name, is_deleted, is_show, created_time, updated_time, orders, lesson_type, lesson_link, duration, pub_date, free_trail, recomment, chapter_id, course_id) VALUES (7, 'Typescript的变量声明', 0, 1, '2022-03-21 05:44:06.271049', '2022-03-21 05:44:06.271109', 2, 2, 'https://luffycityoline.oss-cn-beijing.aliyuncs.com/uploads/course/video/1.mp4', '4:00', '2022-03-21 05:44:06.271160', 1, 0, 2, 1); INSERT INTO luffycity.fg_course_lesson (id, name, is_deleted, is_show, created_time, updated_time, orders, lesson_type, lesson_link, duration, pub_date, free_trail, recomment, chapter_id, course_id) VALUES (8, 'Typescript的类型注解', 0, 1, '2022-03-21 05:44:17.103618', '2022-03-21 05:44:17.103717', 3, 2, 'https://luffycityoline.oss-cn-beijing.aliyuncs.com/uploads/course/video/1.mp4', '4:00', '2022-03-21 05:44:17.103765', 1, 0, 2, 1); INSERT INTO luffycity.fg_course_lesson (id, name, is_deleted, is_show, created_time, updated_time, orders, lesson_type, lesson_link, duration, pub_date, free_trail, recomment, chapter_id, course_id) VALUES (9, 'Typescript的函数声明', 0, 1, '2022-03-21 05:44:44.347650', '2022-03-21 05:44:44.347716', 4, 2, 'https://luffycityoline.oss-cn-beijing.aliyuncs.com/uploads/course/video/1.mp4', '4:00', '2022-03-21 05:44:44.347764', 1, 0, 2, 1); image-20221028145311988
提交代码版本
cd /home/moluo/Desktop/luffycity/ git add . git commit -m "feature: 客户端请求章节信息展示到页面中" git push
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