Day 88 免费课 课程列表页
1.分页功能
1.1后端代码： view.py
实现思路：导入分页器，定义分页类，默认分页参数，在视图里面定义 关键字 pagination_class
from rest_framework.pagination import PageNumberPagination
class StandardPageNumberPagination(PageNumberPagination):
page_size_query_param = 'page_size'
max_page_size = 10
page_size = 1
class CourseAPIView(ListAPIView):
queryset = Course.objects.filter(status=0).order_by("-orders","-students")
# 设置过滤的字段
filter_fields = ('course_category',)
serializer_class = CourseSerializer
filter_backends = [OrderingFilter]
ordering_fields = ('id', 'students', 'price', 'course_category')
pagination_class = StandardPageNumberPagination
1.2 前端courese.vue 代码
实现思路：
1）引入element ui 分页，默认初始化页面 axios 访问后端，拿到数据
<template> <div class="course"> <Header/> <div class="main"> <!-- 筛选功能 --> <div class="top"> .... <!-- 课程列表 ---> <div class="list"> 。。。。 </div>
/*********** 分页器 ***********/ <div class="pagination"> <!-- 必须设置page-size属性，total值的改变才会有效果 --> <el-pagination @current-change="handleCurrentChange" :current-page="query_params.current_page" background layout="prev, pager, next" :page-size="course_page_size" // 后端默认，前端可以重新定义 :total="course_count"> // 总数据数目数量 </el-pagination> </div>
/ ************** 分页器 **************/ </div> <Footer/> </div> </template> <script> import Header from "./common/Header" import Footer from "./common/Footer" export default { name: "Course", data(){ return { catetory_list:[], course_list:[], course_count: 0, course_page_size:1, query_params:{ course_category: 0, ordering:"-id", // 默认排序 current_page: 1, // 当前页 } } }, watch:{ // 每次点击不同课程时,要重新获取课程列表 "query_params.course_category":function(){ this.get_course_list(); // 当切换分类的时候,重置页码 this.query_params.current_page = 1; }, "query_params.ordering":function(){ // 当切换排序条件的时候,重置页码 // this.query_params.current_page = 1; this.get_course_list(); }, "query_params.current_page":function(){ this.get_course_list(); } }, components: {Header, Footer}, created(){ // 获取课程分类 this.$axios.get(this.$settings.Host+"/courses/cate/").then(response=>{ this.catetory_list = response.data }).catch(error=>{ console.log(error.response) }); // 获取课程信息 this.get_course_list() }, methods:{ select_ordering(selector){ // 默认排序 if(this.query_params.ordering==('-'+selector) ){ this.query_params.ordering = selector; }else{ this.query_params.ordering = '-'+selector; } }, get_course_list(){ let query_params = { ordering:this.query_params.ordering, page:this.query_params.current_page, }; if( this.query_params.course_category != 0 ){ query_params.course_category = this.query_params.course_category; } this.$axios.get(this.$settings.Host+"/courses/list/",{ params: query_params }).then(response=>{ // 课程列表 this.course_list = response.data.results; // 课程总数量 this.course_count = response.data.count; }).catch(error=>{ console.log(error.response) }); }, handleCurrentChange(page){ // 页码发生改变 this.query_params.current_page = page; } } } </script> <style scoped> ... .pagination{ text-align: center; margin: 20px 0px 50px 0px; } </style>
2.课程详情页
2.1CKEditor富文本编辑器
富文本即具备丰富样式格式的文本。在运营后台，运营人员需要录入课程的相关描述，可以是包含了HTML语法格式的字符串。为了快速简单的让用户能够在页面中编辑带html格式的文本，我们引入富文本编辑器。
富文本编辑器：ueditor、ckeditor、kindeditor
pip install django-ckeditor
在INSTALLED_APPS中添加
INSTALLED_APPS = [
...
'ckeditor', # 富文本编辑器
'ckeditor_uploader', # 富文本编辑器上传图片模块
...
]
3. 添加CKEditor设置
在settings/dev.py中添加
# 富文本编辑器ckeditor配置 CKEDITOR_CONFIGS = { 'default': { 'toolbar': 'full', # 工具条功能 'height': 300, # 编辑器高度 # 'width': 300, # 编辑器宽 }, } CKEDITOR_UPLOAD_PATH = '' # 上传图片保存路径，留空则调用django的文件上传功能
4. 添加ckeditor路由
在总路由中添加
path(r'^ckeditor/', include('ckeditor_uploader.urls')),
5. 为模型类添加字段
ckeditor提供了两种类型的Django模型类字段
-
ckeditor.fields.RichTextField不支持上传文件的富文本字段 -
ckeditor_uploader.fields.RichTextUploadingField支持上传文件的富文本字段\
修改course/models.py里面的字段信息,记得要重新数据迁移
from ckeditor_uploader.fields import RichTextUploadingField class Course(models.Model): """ 专题课程 """ ... brief = RichTextUploadingField(max_length=2048, verbose_name="课程概述", null=True, blank=True)
3.课程详情页显示
因为接下来的组件中使用了vue-video视频播放组件，所以我们需要先预安装。
3.1安装依赖
npm install vue-video-player --save
3.2 在main.js中注册加载组件
require('video.js/dist/video-js.css'); require('vue-video-player/src/custom-theme.css'); import VideoPlayer from 'vue-video-player' Vue.use(VideoPlayer);
3.3 Detail.vue组件代码：
<template>
<div class="detail">
<Header/>
<div class="main">
<div class="course-info">
<div class="wrap-left">
<video-player class="video-player vjs-custom-skin"
ref="videoPlayer"
:playsinline="true"
:options="playerOptions"
@play="onPlayerPlay($event)"
@pause="onPlayerPause($event)"
>
</video-player>
</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+"课程")}} 难度：{{course.level}}</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"><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="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="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{{chapter_list.length}}章 147个课时</p>
</div>
<div class="chapter-item" v-for="chapter in chapter_list">
<p class="chapter-title"><img src="@/assets/1.svg" alt="">第{{chapter.chapter}}章·{{chapter.name}}</p>
<ul class="lesson-list">
<li class="lesson-item" v-for="lesson in chapter.coursesections">
<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="@/assets/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="course.teacher.image">
<div class="name">
<p class="teacher-name">{{course.teacher.name}} {{course.teacher.title}}</p>
<p class="teacher-title">{{course.teacher.signature}}</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"
import {videoPlayer} from 'vue-video-player';
export default {
name: "Detail",
data(){
return {
tabIndex:1, // 当前选项卡显示的下标
course_id:0, // 当前页面对应的课程ID
course: {
teacher: {},
}, // 课程详情信息
chapter_list:{},
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/courses/675076.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。
}
}
},
watch:{
course(data){
while(data.brief.search(`"/media`) != -1 ){
data.brief = data.brief.replace(`"/media`,`"${this.$settings.Host}/media`)
}
},
tabIndex(data){
if(data==2){
//获取当前课程对应的章节列表和课时列表
this.$axios.get(`${this.$settings.Host}/courses/chapters/?course=${this.course_id}`).then(response=>{
this.chapter_list = response.data;
}).catch(error=>{
console.log(error.response)
})
}
}
},
created(){
// 获取当前课程ID
this.course_id = this.$route.query.id - 0;
// 判断ID基本有效性
let _this = this;
if( isNaN(this.course_id) || this.course_id < 1 ){
_this.$alert("无效的课程ID!","错误",{
callback(){
_this.$router.go(-1);
}});
}
// 发送请求获取后端课程数据
this.$axios.get(this.$settings.Host+`/courses/detail/${this.course_id}/`).then(response=>{
this.course = response.data;
// 修改视频中的封面图片
this.playerOptions.poster = this.course.course_img;
}).catch(error=>{
console.log(error.response)
});
},
methods: {
// 视频播放事件
onPlayerPlay(player) {
alert("play");
},
// 视频暂停播放事件
onPlayerPause(player){
alert("pause");
},
// 视频插件初始化
player() {
return this.$refs.videoPlayer.player;
}
},
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;
}
</style>
3.4 注册路由
import CourseDetail from "../components/CourseDetail" ,{ name:"CourseDetail", path: "/detail", component: CourseDetail, }
3.5
<p class="box-title"><router-link :to="{path: '/detail',query:{id:course.id}}">{{course.name}}</router-link></p>
3.6 CourseDetail.vue:104行,接受来自课程列表的课程ID, 代码:
mounted(){ // 获取地址上面的课程ID let id = this.$route.query.id - 0; console.log(id); if( isNaN(id) || id < 1 ){ alert("非法请求!") this.$router.go(-1); } }
3.7 后端提供课程详情页数据接口
3.7.1 序列化器代码:（采用序列化器嵌套）
# 默认情况,序列化器转换模型数据时,默认会把外键直接转成主键ID值
# 所以我们需要重新设置在序列化器中针对外键的序列化
# 这种操作就是一个序列器里面调用另一个序列化器了.叫"序列化器嵌套"
class TeacherDetailModelSerializer(serializers.ModelSerializer): class Meta: model = Teacher fields = ("id","name","title","role","signature","image","brief") class CourseDetailModelSerializer(serializers.ModelSerializer): """课程详情页的序列化器""" teacher = TeacherDetailModelSerializer() class Meta: model = Course fields = ("id","name","course_img","students","lessons","pub_lessons","price","teacher","course_level","brief")
3.7.2 视图代码: 这里采用retrieveAPIView，获取单个
from rest_framework.generics import RetrieveAPIView from .serializers import CourseDetailModelSerializer class CourseDeitalAPIView(RetrieveAPIView): """课程详情信息""" queryset = Course.objects.filter(is_delete=False, is_show=True).order_by("orders") serializer_class = CourseDetailModelSerializer
3.7.3 路由代码
from django.urls import path, re_path from . import views urlpatterns = [ re_path(r"detail/(?P<pk>\d+)",views.CourseDetailAPIView.as_view()) ]
<template>
<div class="detail">
<Header/>
<div class="main">
<div class="course-info">
<div class="wrap-left">
<video-player class="video-player vjs-custom-skin"
ref="videoPlayer"
:playsinline="true"
:options="playerOptions"
@play="onPlayerPlay($event)"
@pause="onPlayerPause($event)"
>
</video-player>
</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+"课程")}} 难度：{{course.course_level}}</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"><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="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="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">
<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="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="course.teacher.image">
<div class="name">
<p class="teacher-name">{{course.teacher.name}} {{course.teacher.title}}</p>
<p class="teacher-title">{{course.teacher.signature}}</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"
import {videoPlayer} from 'vue-video-player';
export default {
name: "Detail",
data(){
return {
tabIndex:1, // 当前选项卡显示的下标
course_id:0, // 当前页面对应的课程ID
course: {
teacher: {},
}, // 课程详情信息
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/courses/675076.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。
}
}
},
watch:{
course(data){
while(data.brief.search(`"/media`) != -1 ){
data.brief = data.brief.replace(`"/media`,`"${this.$settings.Host}/media`)
}
},
tabIndex(){
if(tabIndex==2){
//获取当前课程对应的章节列表和课时列表
}
}
},
created(){
// 获取当前课程ID
this.course_id = this.$route.query.id - 0;
// 判断ID基本有效性
let _this = this;
if( isNaN(this.course_id) || this.course_id < 1 ){
_this.$alert("无效的课程ID!","错误",{
callback(){
_this.$router.go(-1);
}});
}
// 发送请求获取后端课程数据
this.$axios.get(this.$settings.Host+`/courses/detail/${this.course_id}/`).then(response=>{
this.course = response.data;
// 修改视频中的封面图片
this.playerOptions.poster = this.course.course_img;
}).catch(error=>{
console.log(error.response)
});
},
methods: {
// 视频播放事件
onPlayerPlay(player) {
alert("play");
},
// 视频暂停播放事件
onPlayerPause(player){
alert("pause");
},
// 视频插件初始化
player() {
return this.$refs.videoPlayer.player;
}
},
components:{
Header,
Footer,
videoPlayer,
}
}
</script>
3.9.1 courses/serializers.py,序列化器，代码：
from .models import CourseLesson class CourseLessonModelSerializer(serializers.ModelSerializer): """课程课时""" class Meta: model = CourseLesson fields = ["id","name","duration","free_trail"] from .models import CourseChapter class CourseChapterModelSerializer(serializers.ModelSerializer): """课程章节""" coursesections = CourseLessonModelSerializer(many=True) class Meta: model = CourseChapter fields = ("id","name","coursesections","chapter")
3.9.2 courses/views.py视图，代码：
from rest_framework.generics import ListAPIView from .serializers import CourseChapterModelSerializer from .models import CourseChapter class CourseChapterAPIView(ListAPIView): """课程章节信息""" queryset = CourseChapter.objects.filter(is_delete=False, is_show=True).order_by("orders") serializer_class = CourseChapterModelSerializer filter_backends = [DjangoFilterBackend] filter_fields = ['course']
3.9.3 courses/urls.py路由，代码：
re_path(r"^chapters/$",views.CourseChapterAPIView.as_view()),
前端请求章节信息展示到页面中
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