今日内容概要
- 查询所有课程接口
- 课程详情接口
- 课程详情之所有章节接口
- 所有课程前台、所有详情前台
- 视频托管
今日内容详细
查询所有课程接口
1.查询所有课程接口
2.带过滤：按分类过滤
3.带排序：价格，学习人数
4.带分页：简单分页
表模型
class Course(BaseModel):
"""课程"""
course_type = (
(0, '付费'),
(1, 'VIP专享'),
)
level_choices = (
(0, '初级'),
(1, '中级'),
(2, '高级'),
)
status_choices = (
(0, '上线'),
(1, '下线'),
(2, '预上线'),
)
name = models.CharField(max_length=128, verbose_name="课程名称")
course_img = models.ImageField(upload_to="courses", max_length=255, verbose_name="封面图片", blank=True, null=True)
course_type = models.SmallIntegerField(choices=course_type, default=0, verbose_name="付费类型")
brief = models.TextField(max_length=2048, verbose_name="详情介绍", null=True, blank=True)
level = models.SmallIntegerField(choices=level_choices, default=0, verbose_name="难度等级")
pub_date = models.DateField(verbose_name="发布日期", auto_now_add=True)
period = models.IntegerField(verbose_name="建议学习周期(day)", default=7)
attachment_path = models.FileField(upload_to="attachment", max_length=128, verbose_name="课件路径", blank=True,
null=True)
status = models.SmallIntegerField(choices=status_choices, default=0, verbose_name="课程状态")
students = models.IntegerField(verbose_name="学习人数", default=0) # 优化字段
sections = models.IntegerField(verbose_name="总课时数量", default=0)
pub_sections = models.IntegerField(verbose_name="课时更新数量", default=0)
price = models.DecimalField(max_digits=6, decimal_places=2, verbose_name="课程原价", default=0)
teacher = models.ForeignKey("Teacher", on_delete=models.DO_NOTHING, null=True, blank=True, verbose_name="授课老师")
course_category = models.ForeignKey("CourseCategory", on_delete=models.SET_NULL, db_constraint=False, null=True,
blank=True, verbose_name="课程分类")
class Meta:
db_table = "luffy_course"
verbose_name = "课程"
verbose_name_plural = "课程"
def __str__(self):
return "%s" % self.name
def course_type_name(self):
return self.get_course_type_display()
def level_name(self):
return self.get_level_display()
def status_name(self):
return self.get_status_display()
def section_list(self):
l = [] # 超过4个就拿4个，不足4个，有几个拿几个
for coursechapter in self.coursechapters.all():
for course_section in coursechapter.coursesections.all():
l.append({
"id":course_section.id,
"name":course_section.name,
"section_link":course_section.section_link,
"duration":course_section.duration,
"free_trail":course_section.free_trail
})
if len(l)>=4:
return l
return l
序列化类
class TeacherSerializer(serializers.ModelSerializer):
class Meta:
model=Teacher
fields = ['name','role','title','id','signature','image','brief']
class CourseSerializer(serializers.ModelSerializer):
teacher = TeacherSerializer()
class Meta:
model = Course
fields = ['name',
"course_img",
"course_type_name",
'brief',
'level_name',
'pub_date',
'period',
'attachment_path',
'status_name',
'students',
'sections',
'pub_sections',
'price',
'teacher',
"section_list"，
"'id'"
]
分页类
from rest_framework.pagination import PageNumberPagination
class CommonPagination(PageNumberPagination):
page_size = 2
page_query_param = 'page'
page_size_query_param = 'page_size'
max_page_size = 5
视图类
from rest_framework.viewsets import GenericViewSet
from utils.common_mixin import CommonListModelMixin as ListModelMixin
from .models import Course
from .serializer import CourseSerializer
from rest_framework.filters import OrderingFilter
from django_filters.rest_framework import DjangoFilterBackend
from .pagination import CommonPagination
class CourseView(GenericViewSet,ListModelMixin):
queryset = Course.objects.filter(is_delete=False,is_show=True).order_by('orders').all()
serializer_class = CourseSerializer
"""
1.带过滤：按分类过滤
2.带排序：价格，学习人数
3.带分页：简单分页
"""
filter_backends=[OrderingFilter,DjangoFilterBackend]
ordering_fields= ['price',"students"]
filterset_fields = ['course_category'] # course_category=1
pagination_class =CommonPagination
路由
from rest_framework.routers import SimpleRouter
from .views import CourseView
router = SimpleRouter()
router.register('course',CourseView,'course')
urlpatterns = [
]
urlpatterns += router.urls
课程详情接口
1.增加些数据
2.多种写法
方式一:直接在原来查询所有的视图类上加入继承：RetrieveModelMixin
继续使用查询所有的序列化类（没有章节及课时）
-配合一个通过课程id，查询所有课程章节及课时的接口
方式二：直接在原来查询所有的视图类上加入继承：RetrieveModelMixin
-重写序列化类：返回课程详情，返回课程章节及课时
3.采用方式一：只要在CourseView加继承RetrieveModelMixin类即可，就有查询单条的接口了
class CourseView(GenericViewSet, ListModelMixin,RetrieveModelMixin):
视图类
class CourseView(GenericViewSet,ListModelMixin,RetrieveModelMixinn):
queryset = Course.objects.filter(is_delete=False,is_show=True).order_by('orders').all()
serializer_class = CourseSerializer
"""
1.带过滤：按分类过滤
2.带排序：价格，学习人数
3.带分页：简单分页
"""
filter_backends=[OrderingFilter,DjangoFilterBackend]
ordering_fields= ['price',"students"]
filterset_fields = ['course_category'] # course_category=1
pagination_class =CommonPagination
课程详情后台之所有章节接口
1.该接口是为了配合 ：课程详情页面写
2.写的接口是查询所有章节及课时
-需要安装课程id过滤
3.写查询所有章节接口（带过滤）
视图类
class CourseChapterView(GenericViewSet,ListModelMixin):
queryset =CourseChapter.objects.filter(is_delete=False,is_show = True).order_by('orders').all()
serializer_class = CourseChapterSerializer
filter_backends = [DjangoFilterBackend]
filterset_fields = ['course'] # course=1
序列化类
class CourseSectionSerializer(serializers.ModelSerializer):
class Meta:
model = CourseSection
fields = ['id','name','section_link','section_type_name','duration','pub_date','free_trail']
class CourseChapterSerializer(serializers.ModelSerializer):
'''
拿出章节下所有课时，方案有三种
-表模型中写
-序列化类中写
-方式三子序列化
'''
# 方式二
# section_list=serializers.SerializerMethodField()
# def get_section_list(self,obj):
# return []
# 方式三：子序列化(在章节表中隐藏了通过related_name写的，coursesections这个字段，因为它可以通过章节对象.coursesections)
coursesections =CourseSectionSerializer(many=True)
class Meta:
model = CourseChapter
fields = ['id','chapter','name','summary','coursesections']
表模型
class CourseSection(BaseModel):
"""课时"""
section_type_choices = (
(0, '文档'),
(1, '练习'),
(2, '视频')
)
chapter = models.ForeignKey("CourseChapter", related_name='coursesections', on_delete=models.CASCADE,
verbose_name="课程章节")
name = models.CharField(max_length=128, verbose_name="课时标题")
section_type = models.SmallIntegerField(default=2, choices=section_type_choices, verbose_name="课时种类")
section_link = models.CharField(max_length=255, blank=True, null=True, verbose_name="课时链接",
help_text="若是video，填vid,若是文档，填link")
duration = models.CharField(verbose_name="视频时长", blank=True, null=True, max_length=32) # 仅在前端展示使用
pub_date = models.DateTimeField(verbose_name="发布时间", auto_now_add=True)
free_trail = models.BooleanField(verbose_name="是否可试看", default=False)
def section_type_name(self):
return self.get_section_type_display()
class Meta:
db_table = "luffy_course_section"
verbose_name = "课时"
verbose_name_plural = verbose_name
所有课程前台
1.查询所有课程分类接口
2.查询所有课程（过滤，排序，分页）
Course.vue
<template>
<div class="course">
<Header></Header>
<div class="main">
<!-- 筛选条件 -->
<div class="condition">
<ul class="cate-list">
<li class="title">课程分类:</li>
<li :class="filter.course_category==0?'this':''" @click="filter.course_category=0">全部</li>
<li :class="filter.course_category==category.id?'this':''" v-for="category in category_list"
@click="filter.course_category=category.id" :key="category.name">{{category.name}}
</li>
</ul>
<div class="ordering">
<ul>
<li class="title">筛 选:</li>
<li class="default" :class="(filter.ordering=='id' || filter.ordering=='-id')?'this':''"
@click="filter.ordering='-id'">默认
</li>
<li class="hot" :class="(filter.ordering=='students' || filter.ordering=='-students')?'this':''"
@click="filter.ordering=(filter.ordering=='-students'?'students':'-students')">人气
</li>
<li class="price"
:class="filter.ordering=='price'?'price_up this':(filter.ordering=='-price'?'price_down this':'')"
@click="filter.ordering=(filter.ordering=='-price'?'price':'-price')">价格
</li>
</ul>
<p class="condition-result">共{{course_total}}个课程</p>
</div>
</div>
<!-- 课程列表 -->
<div class="course-list">
<div class="course-item" v-for="course in course_list" :key="course.name">
<div class="course-image">
<img :src="course.course_img" alt="">
</div>
<div class="course-info">
<h3>
<router-link :to="'/free/detail/'+course.id">{{course.name}}</router-link>
<span><img src="@/assets/img/avatar1.svg" alt="">{{course.students}}人已加入学习</span></h3>
<p class="teather-info">
{{course.teacher.name}} {{course.teacher.title}} {{course.teacher.signature}}
<span v-if="course.sections>course.pub_sections">共{{course.sections}}课时/已更新{{course.pub_sections}}课时</span>
<span v-else>共{{course.sections}}课时/更新完成</span>
</p>
<ul class="section-list">
<li v-for="(section, key) in course.section_list" :key="section.name"><span
class="section-title">0{{key+1}} | {{section.name}}</span>
<span class="free" v-if="section.free_trail">免费</span></li>
</ul>
<div class="pay-box">
<div v-if="course.discount_type">
<span class="discount-type">{{course.discount_type}}</span>
<span class="discount-price">￥{{course.real_price}}元</span>
<span class="original-price">原价：{{course.price}}元</span>
</div>
<span v-else class="discount-price">￥{{course.price}}元</span>
<span class="buy-now">立即购买</span>
</div>
</div>
</div>
</div>
<div class="course_pagination block">
<el-pagination
@size-change="handleSizeChange"
@current-change="handleCurrentChange"
:current-page.sync="filter.page"
:page-sizes="[2, 3, 5, 10]"
:page-size="filter.page_size"
layout="sizes, prev, pager, next"
:total="course_total">
</el-pagination>
</div>
</div>
<!--<Footer></Footer>-->
</div>
</template>
<script>
import Header from "@/components/Header"
// import Footer from "@/components/Footer"
export default {
name: "Course",
data() {
return {
category_list: [], // 课程分类列表
course_list: [], // 课程列表
course_total: 0, // 当前课程的总数量
filter: {
course_category: 0, // 当前用户选择的课程分类，刚进入页面默认为全部，值为0
ordering: "-id", // 数据的排序方式，默认值是-id，表示对于id进行降序排列
page_size: 2, // 单页数据量
page: 1,
}
}
},
created() {
this.get_category();
this.get_course();
},
components: {
Header,
// Footer,
},
watch: {
"filter.course_category": function () {
this.filter.page = 1;
this.get_course();
},
"filter.ordering": function () {
this.get_course();
},
"filter.page_size": function () {
this.get_course();
},
"filter.page": function () {
this.get_course();
}
},
methods: {
handleSizeChange(val) {
// 每页数据量发生变化时执行的方法
this.filter.page = 1;
this.filter.page_size = val;
},
handleCurrentChange(val) {
// 页码发生变化时执行的方法
this.filter.page = val;
},
get_category() {
// 获取课程分类信息
this.$axios.get(`${this.$settings.BASE_URL}course/category/`).then(response => {
if (response.data.code == 100){
this.category_list = response.data.data;
}
}).catch(() => {
this.$message({
message: "获取课程分类信息有误，请联系客服工作人员",
})
})
},
get_course() {
// 排序
let filters = {
ordering: this.filter.ordering, // 排序
};
// 判决是否进行分类课程的展示
if (this.filter.course_category > 0) {
filters.course_category = this.filter.course_category;
}
// 设置单页数据量
if (this.filter.page_size > 0) {
filters.page_size = this.filter.page_size;
} else {
filters.page_size = 5;
}
// 设置当前页码
if (this.filter.page > 1) {
filters.page = this.filter.page;
} else {
filters.page = 1;
}
// 获取课程列表信息
this.$axios.get(`${this.$settings.BASE_URL}course/course/`, {
params: filters
}).then(response => {
if (response.data.code = 100){
// console.log(response.data);
this.course_list = response.data.data.results;
this.course_total = response.data.data.count;
// console.log(this.course_list);
}
}).catch(() => {
this.$message({
message: "获取课程信息有误，请联系客服工作人员"
})
})
}
}
}
</script>
<style scoped>
.course {
background: #f6f6f6;
}
.course .main {
width: 1100px;
margin: 35px auto 0;
}
.course .condition {
margin-bottom: 35px;
padding: 25px 30px 25px 20px;
background: #fff;
border-radius: 4px;
box-shadow: 0 2px 4px 0 #f0f0f0;
}
.course .cate-list {
border-bottom: 1px solid #333;
border-bottom-color: rgba(51, 51, 51, .05);
padding-bottom: 18px;
margin-bottom: 17px;
}
.course .cate-list::after {
content: "";
display: block;
clear: both;
}
.course .cate-list li {
float: left;
font-size: 16px;
padding: 6px 15px;
line-height: 16px;
margin-left: 14px;
position: relative;
transition: all .3s ease;
cursor: pointer;
color: #4a4a4a;
border: 1px solid transparent; /* transparent 透明 */
}
.course .cate-list .title {
color: #888;
margin-left: 0;
letter-spacing: .36px;
padding: 0;
line-height: 28px;
}
.course .cate-list .this {
color: #ffc210;
border: 1px solid #ffc210 !important;
border-radius: 30px;
}
.course .ordering::after {
content: "";
display: block;
clear: both;
}
.course .ordering ul {
float: left;
}
.course .ordering ul::after {
content: "";
display: block;
clear: both;
}
.course .ordering .condition-result {
float: right;
font-size: 14px;
color: #9b9b9b;
line-height: 28px;
}
.course .ordering ul li {
float: left;
padding: 6px 15px;
line-height: 16px;
margin-left: 14px;
position: relative;
transition: all .3s ease;
cursor: pointer;
color: #4a4a4a;
}
.course .ordering .title {
font-size: 16px;
color: #888;
letter-spacing: .36px;
margin-left: 0;
padding: 0;
line-height: 28px;
}
.course .ordering .this {
color: #ffc210;
}
.course .ordering .price {
position: relative;
}
.course .ordering .price::before,
.course .ordering .price::after {
cursor: pointer;
content: "";
display: block;
width: 0px;
height: 0px;
border: 5px solid transparent;
position: absolute;
right: 0;
}
.course .ordering .price::before {
border-bottom: 5px solid #aaa;
margin-bottom: 2px;
top: 2px;
}
.course .ordering .price::after {
border-top: 5px solid #aaa;
bottom: 2px;
}
.course .ordering .price_up::before {
border-bottom-color: #ffc210;
}
.course .ordering .price_down::after {
border-top-color: #ffc210;
}
.course .course-item:hover {
box-shadow: 4px 6px 16px rgba(0, 0, 0, .5);
}
.course .course-item {
width: 1100px;
background: #fff;
padding: 20px 30px 20px 20px;
margin-bottom: 35px;
border-radius: 2px;
cursor: pointer;
box-shadow: 2px 3px 16px rgba(0, 0, 0, .1);
/* css3.0 过渡动画 hover 事件操作 */
transition: all .2s ease;
}
.course .course-item::after {
content: "";
display: block;
clear: both;
}
/* 顶级元素 父级元素 当前元素{} */
.course .course-item .course-image {
float: left;
width: 423px;
height: 210px;
margin-right: 30px;
}
.course .course-item .course-image img {
max-width: 100%;
max-height: 210px;
}
.course .course-item .course-info {
float: left;
width: 596px;
}
.course-item .course-info h3 a {
font-size: 26px;
color: #333;
font-weight: normal;
margin-bottom: 8px;
}
.course-item .course-info h3 span {
font-size: 14px;
color: #9b9b9b;
float: right;
margin-top: 14px;
}
.course-item .course-info h3 span img {
width: 11px;
height: auto;
margin-right: 7px;
}
.course-item .course-info .teather-info {
font-size: 14px;
color: #9b9b9b;
margin-bottom: 14px;
padding-bottom: 14px;
border-bottom: 1px solid #333;
border-bottom-color: rgba(51, 51, 51, .05);
}
.course-item .course-info .teather-info span {
float: right;
}
.course-item .section-list::after {
content: "";
display: block;
clear: both;
}
.course-item .section-list li {
float: left;
width: 44%;
font-size: 14px;
color: #666;
padding-left: 22px;
/* background: url("路径") 是否平铺 x轴位置 y轴位置 */
background: url("/src/assets/img/play-icon-gray.svg") no-repeat left 4px;
margin-bottom: 15px;
}
.course-item .section-list li .section-title {
/* 以下3句，文本内容过多，会自动隐藏，并显示省略符号 */
text-overflow: ellipsis;
overflow: hidden;
white-space: nowrap;
display: inline-block;
max-width: 200px;
}
.course-item .section-list li:hover {
background-image: url("/src/assets/img/play-icon-yellow.svg");
color: #ffc210;
}
.course-item .section-list li .free {
width: 34px;
height: 20px;
color: #fd7b4d;
vertical-align: super;
margin-left: 10px;
border: 1px solid #fd7b4d;
border-radius: 2px;
text-align: center;
font-size: 13px;
white-space: nowrap;
}
.course-item .section-list li:hover .free {
color: #ffc210;
border-color: #ffc210;
}
.course-item {
position: relative;
}
.course-item .pay-box {
position: absolute;
bottom: 20px;
width: 600px;
}
.course-item .pay-box::after {
content: "";
display: block;
clear: both;
}
.course-item .pay-box .discount-type {
padding: 6px 10px;
font-size: 16px;
color: #fff;
text-align: center;
margin-right: 8px;
background: #fa6240;
border: 1px solid #fa6240;
border-radius: 10px 0 10px 0;
float: left;
}
.course-item .pay-box .discount-price {
font-size: 24px;
color: #fa6240;
float: left;
}
.course-item .pay-box .original-price {
text-decoration: line-through;
font-size: 14px;
color: #9b9b9b;
margin-left: 10px;
float: left;
margin-top: 10px;
}
.course-item .pay-box .buy-now {
width: 120px;
height: 38px;
background: transparent;
color: #fa6240;
font-size: 16px;
border: 1px solid #fd7b4d;
border-radius: 3px;
transition: all .2s ease-in-out;
float: right;
text-align: center;
line-height: 38px;
position: absolute;
right: 0;
bottom: 5px;
}
.course-item .pay-box .buy-now:hover {
color: #fff;
background: #ffc210;
border: 1px solid #ffc210;
}
.course .course_pagination {
margin-bottom: 60px;
text-align: center;
}
</style>
课程详情页面
1.查询课程详情
2.查询所有章节及其下的课时，带按课程id过滤功能
-配合查询课程详情页面使用的
视频播放器
1.视频播放器，可以使用h5自带的video标签
1.画面比例，清晰度
2.倍速播放
3.静音
4.暂停可以插广告
2.使用第三方：vue-video-player
1.依赖：在luffycity目录下的命令:cnpm install vue-video-player
2.配置：main.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);
3.使用第三方： vue-core-video-player
1.cnpm install -S vue-core-video-player
2.配置：main.js
import VueCoreVideoPlayer from 'vue-core-video-player'
//或者
Vue.use(VueCoreVideoPlayer, {
lang: 'zh-CN'
})
Detail.vue
<template>
<div class="detail">
<Header/>
<div class="main">
<div class="course-info">
<div class="wrap-left">
<vue-core-video-player :src="mp4_url"
:muted="true"
:autoplay="false"
title="课程"
preload="nona"
:loop="true"
controls="auto"
cover='https://img1.wxzxzj.com/vpc-example-cover-your-name-c.png'
@loadedmetadata="onLoaded"
@play="onPlayerPlay"
@pause="onPlayerPause"
></vue-core-video-player>
</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.sections }}课时/{{ course_info.pub_sections }}小时 难度：{{ course_info.level_name }}</p>
<div class="sale-time">
<p class="sale-type">价格 <span class="original_price">¥{{ course_info.price }}</span></p>
<p class="expire"></p>
</div>
<div class="buy">
<div class="buy-btn">
<button class="buy-now">立即购买</button>
<button class="free">免费试学</button>
</div>
<!--<div class="add-cart" @click="add_cart(course_info.id)">-->
<!--<img src="@/assets/img/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</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="course-brief" v-html="course_info.brief_text"></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_chapters.length }}章 {{ course_info.sections }}个课时</p>
</div>
<div class="chapter-item" v-for="chapter in course_chapters" :key="chapter.name">
<p class="chapter-title"><img src="@/assets/img/enum.svg"
alt="">第{{ chapter.chapter }}章·{{ chapter.name }}
</p>
<ul class="section-list">
<li class="section-item" v-for="section in chapter.coursesections" :key="section.name">
<p class="name"><span class="index">{{ chapter.chapter }}-{{ section.orders }}</span>
{{ section.name }}<span class="free" v-if="section.free_trail">免费</span></p>
<p class="time">{{ section.duration }} <img src="@/assets/img/chapter-player.svg"></p>
<button class="try" v-if="section.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_info.teacher.image">
<div class="name">
<p class="teacher-name">{{ course_info.teacher.name }}
{{ course_info.teacher.title }}</p>
<p class="teacher-title">{{ course_info.teacher.signature }}</p>
</div>
</div>
<p class="narrative">{{ course_info.teacher.brief }}</p>
</div>
</div>
</div>
</div>
</div>
<Footer/>
</div>
</template>
<script>
import Header from "@/components/Header"
import Footer from "@/components/Footer"
export default {
name: "Detail",
data() {
return {
tabIndex: 2, // 当前选项卡显示的下标
course_id: 0, // 当前课程信息的ID
course_info: {
teacher: {},
}, // 课程信息
course_chapters: [], // 课程的章节课时列表
mp4_url: 'http://rx7c1tgq2.hd-bkt.clouddn.com/1%20%E8%80%83%E8%AF%95.mp4',
}
},
created() {
this.get_course_id();
this.get_course_data();
this.get_chapter();
},
methods: {
onLoaded() {
console.log('视频播放第一帧')
},
onPlayerPlay() {
// 当视频播放时，执行的方法
console.log('视频开始播放')
},
onPlayerPause() {
// 当视频暂停播放时，执行的方法
console.log('视频暂停，可以打开广告了')
},
get_course_id() {
// 获取地址栏上面的课程ID
this.course_id = this.$route.params.id
if (this.course_id < 1) {
let _this = this;
_this.$alert("对不起，当前视频不存在！", "警告", {
callback() {
_this.$router.go(-1);
}
});
}
},
get_course_data() {
// ajax请求课程信息
this.$axios.get(`${this.$settings.BASE_URL}course/course/${this.course_id}/`).then(response => {
if (response.data.code == 100) {
// window.console.log(response.data);
this.course_info = response.data.data;
console.log(this.course_info)
}
}).catch(() => {
this.$message({
message: "对不起，访问页面出错！请联系客服工作人员！"
});
})
},
get_chapter() {
// 获取当前课程对应的章节课时信息
// http://127.0.0.1:8000/course/chapters/?course=(pk)
this.$axios.get(`${this.$settings.BASE_URL}course/course_chapter/`, {
params: {
"course": this.course_id,
}
}).then(response => {
if (response.data.code) {
this.course_chapters = response.data.data;
}
}).catch(error => {
window.console.log(error.response.msg);
})
},
},
components: {
Header,
Footer,
}
}
</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;
}
.section-list {
padding: 0 20px;
}
.section-list .section-item {
padding: 15px 20px 15px 36px;
cursor: pointer;
justify-content: space-between;
position: relative;
overflow: hidden;
}
.section-item .name {
font-size: 14px;
color: #666;
float: left;
}
.section-item .index {
margin-right: 5px;
}
.section-item .free {
font-size: 12px;
color: #fff;
letter-spacing: .19px;
background: #ffc210;
border-radius: 100px;
padding: 1px 9px;
margin-left: 10px;
}
.section-item .time {
font-size: 14px;
color: #666;
letter-spacing: .23px;
opacity: 1;
transition: all .15s ease-in-out;
float: right;
}
.section-item .time img {
width: 18px;
height: 18px;
margin-left: 15px;
vertical-align: text-bottom;
}
.section-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;
}
.section-item:hover {
background: #fcf7ef;
box-shadow: 0 0 0 0 #f3f3f3;
}
.section-item:hover .name {
color: #333;
}
.section-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>
视频托管
1.以后静态文件(视频，图片，zip)，因为会越来越多，不会放在项目的media中--->使用第三方的托管平台--->第三方文件存储
2.存储视频，图片，文件
1.meida
2.第三方存储（花钱）
1.七牛云
2.阿里 oss存储
3.其他...
3.自己公司内部搭建文件存储
1.Ceph（重）、Minio（用的多一些）、FastDFS（老牌）
1.知乎：
2.FastDFS：https://zhuanlan.zhihu.com/p/372286804
3.Minio：之前学长写的博客
参照一下：http://192.168.1.252:9090/login
3.使用七牛云托管
1.空间：存储文件的地方，不同空间相互隔离
2.注册七牛云账号
3.选择文件存储kodo
4.创建空间，手动上传视频
4.正常项目上传流程
1.后端：需要配合文件上传接口
1.前端选择视频---->传到咱们后端---->后端把视频传到七牛云上---->返回地址---->存到咱们数据库
2.前端直接使用js---->传到七牛云---->七牛云返回地址---->向咱们后端发送ajax请求---->我们直接把地址存到库中即可
5.域名备案相关
1.以后写了项目，放到互联网上给别人用
2.购买域名---》www.lqz.com
3.备案--->工信部--->流程比较繁琐
4.项目在 189.28.11.11
5.域名解析：只要www.lqz.com --->189.28.11.11
使用python把文件传到七牛云
文档：developer.qiniu.com/kodo/1242/p…
from qiniu import Auth, put_file
q = Auth('', '')
#要上传的空间
bucket_name = 'lqz-luffy'
#上传后保存的文件名
key = '致命诱惑.mp4'
#生成上传 Token，可以指定过期时间等
token = q.upload_token(bucket_name, key, 3600)
#要上传文件的本地路径
localfile = './1.mp4'
ret, info = put_file(token, key, localfile, version='v2')
print(info)
print(ret)
print('http://rx7c1tgq2.hd-bkt.clouddn.com/'+key)
作业
查询课程详情，用方式二写一下
视图类
class CourseView(GenericViewSet,ListModelMixin,RetrieveModelMixinn):
queryset = Course.objects.filter(is_delete=False,is_show=True).order_by('orders').all()
serializer_class = CourseSerializer
"""
1.带过滤：按分类过滤
2.带排序：价格，学习人数
3.带分页：简单分页
"""
filter_backends=[OrderingFilter,DjangoFilterBackend]
ordering_fields= ['price',"students"]
filterset_fields = ['course_category'] # course_category=1
pagination_class =CommonPagination
def get_serializer_class(self):
if self.action=='retrieve':
return CourseDetailSerializer
else:
# return self.serializer_class
return super().get_serializer_class()
序列化类
class CourseSectionSerializer(serializers.ModelSerializer):
class Meta:
model = CourseSection
fields = ['id','name','section_link','section_type_name','duration','pub_date','free_trail']
class CourseChapterSerializer(serializers.ModelSerializer):
'''
拿出章节下所有课时，方案有三种
-表模型中写
-序列化类中写
-方式三子序列化
'''
# 方式二
# section_list=serializers.SerializerMethodField()
# def get_section_list(self,obj):
# return []
# 方式三：子序列化(在章节表中隐藏了通过related_name写的，coursesections这个字段，因为它可以通过章节对象.coursesections)
coursesections =CourseSectionSerializer(many=True)
class Meta:
model = CourseChapter
fields = ['id','chapter','name','summary','coursesections']
class CourseDetailSerializer(serializers.ModelSerializer):
teacher = TeacherSerializer()
coursechapters=CourseChapterSerializer(many=True)
class Meta:
model = Course
fields = [
"id",
'name',
"course_img",
"course_type_name",
'brief',
'level_name',
'pub_date',
'period',
'attachment_path',
'status_name',
'students',
'sections',
'pub_sections',
'price',
'teacher',
"coursechapters",
]
创建课时接口（上传文件）
上传文件并传到七牛云--->把链接地址放到课时的接口
class CourseChapterView(GenericViewSet,ListModelMixin):
queryset =CourseChapter.objects.filter(is_delete=False,is_show = True).order_by('orders').all()
serializer_class = CourseChapterSerializer
filter_backends = [DjangoFilterBackend]
filterset_fields = ['course'] # course=1
from qiniu import Auth, put_file, etag
import qiniu.config
from rest_framework.exceptions import APIException
from rest_framework.viewsets import ViewSet
class CreateCourseSection(ViewSet,CreateModelMixin):
def create(self,request,*args,**kwargs):
print(request.data) # <QueryDict: {'name': ['wedds'], 'chapter': ['1'], 'my_file': [<TemporaryUploadedFile: 8 接口加缓存.mp4 (video/mp4)>]}>
print(request.FILES.get('my_file')) # 8 接口加缓存.mp4
my_file = request.FILES.get('my_file') # 8 接口加缓存.mp4
if my_file:
# 上传七牛云
import os
from django.conf import settings
img_file = os.path.join(settings.BASE_DIR, 'media',"coursesection", my_file.name)
print(img_file)
with open(img_file,'wb')as f:
for i in my_file:
f.write(i)
# 需要填写你的 Access Key 和 Secret Key
access_key = 'm8BsqmDk8XAPw0irke704Mt5zSmJZuKhzaXQDOVa'
secret_key = 'QJcJ2EXZn9hpi9RvtxBtqgdh6eJ80aZPEqZnmJGV'
# 构建鉴权对象
q = Auth(access_key, secret_key)
# 要上传的空间
bucket_name = 'ln-luffy'
# 上传后保存的文件名
key = '%s'% my_file.name
# 生成上传 Token，可以指定过期时间等
token = q.upload_token(bucket_name, key, 3600)
# 要上传文件的本地路径
localfile = '%s'%img_file
ret, info = put_file(token, key, localfile, version='v2')
section_link = 'rx874fnt1.hd-bkt.clouddn.com/'+key
name = request.data.get('name')
chapter = request.data.get('chapter')
orders = request.data.get('orders')
res = CourseSection.objects.create(section_link=section_link,name=name,chapter_id = chapter,orders=orders)
print(res)
return APIResponse()
raise APIException('必须传文件哦')
