03、课程接口

1、课程分类接口

路由

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# http://127.0.0.1:8000/api/v1/course/category/

from django.urls import path, include
from rest_framework.routers import SimpleRouter
from .views import CourseCategoryView
router = SimpleRouter()
router.register('category', CourseCategoryView, 'category')
urlpatterns = [
    path('', include(router.urls)),
]
View Code
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序列化类

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from rest_framework import serializers
from .models import CourseCategory

class CourseCategorySerializer(serializers.ModelSerializer):
    class Meta:
        model = CourseCategory
        fields = ['id', 'name']
View Code
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视图类

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from django.shortcuts import render

# Create your views here.
from .models import CourseCategory
from .serializer import CourseCategorySerializer
from rest_framework.viewsets import GenericViewSet
from rest_framework.mixins import ListModelMixin
class CourseCategoryView(GenericViewSet,ListModelMixin):
    queryset = CourseCategory.objects.all().filter(is_delete=False,is_show=True).order_by('orders')
    serializer_class =CourseCategorySerializer
View Code
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2、课程列表接口

路由

router.register('actual', CourseView, 'actual')

序列化类

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class TeacherSerializer(serializers.ModelSerializer):
    class Meta:
        model = Teacher
        fields = ('id', 'name', 'role_name', 'title', 'signature', 'image', 'brief')


class CourseSerializer(serializers.ModelSerializer):
    teacher = TeacherSerializer()  # 子序列化，单单条数据，直接子序列化

    class Meta:
        model = Course
        # fields = ['id', 'name']  # 这里要写很多，自定义字段
        fields = [
            'id',
            'name',
            'course_img',
            'brief',  # 课程介绍--->后面课程详情使用同一个序列化类
            'attachment_path',  # 课件
            'pub_sections',  # 发布的课时数
            'price',  # 价格
            'students',  # 学习人数
            'period',  # 学习周期
            'sections',  # 总课时数

            'course_type_name',  # choice字段---》表模型中写
            'level_name',  # choice字段---》表模型中写
            'status_name',  # choice字段---》表模型中写

            'teacher',  # 表模型中写，序列化类中写，子序列化
            'section_list', # 表模型中写 -章节--->Course表中没有---》重写：序列类写，表模型中写
        ]
View Code
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 安装、注册过滤和排序模块

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# 安装过滤和排序模块
pip3 install django-filter

# 注册
INSTALLED_APPS = [
# ...
    'django_filters',
# ...
]
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新建分页类 course/pagination

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from rest_framework.pagination import PageNumberPagination


class CommonPageNumberPagination(PageNumberPagination):
    page_size = 2  # 每页显示条数，默认
    page_query_param = 'page'  # 查询条件叫page --> ?page=3
    page_size_query_param = 'page_size'  # 每页显示的条数 ?page=3&size=9 查询第三页，第三页显示9条
    max_page_size = 10  # 每页最大限度多少条，如果?page=3&size=9，最终还是显示5条
View Code
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课程接口视图类（包括分页、过滤、排序）

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# 课程列表接口,课程详情接口
class CourseView(GenericViewSet, ListModelMixin, RetrieveModelMixin):
    queryset = Course.objects.all().filter(is_delete=False, is_show=True).order_by('orders')
    serializer_class = CourseSerializer

    # 加入分页---》随着课程越来越多，要分页
    pagination_class = CommonPageNumberPagination
    # 加入排序
    filter_backends = [DjangoFilterBackend, OrderingFilter]
    ordering_fields = ['price', 'students']
    # 加入过滤---》不是按名字搜索的这种过滤，而是按课程分类过滤--》第三方django-filter
    filter_fields = ['course_category']
View Code
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3、课程页面前后端调通

ActualCourse

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<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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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="'/actual-detail/:id'+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(); // 加载课程分类
            this.get_course(); // 加载科创城
        },
        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.$settings.base_url}course/category/`).then(response => {
                    this.category_list = response.data;
                }).catch(() => {
                    this.$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.$settings.base_url}course/actual/`, {
                    params: filters
                }).then(response => {
                    // console.log(response.data);
                    this.course_list = response.data.results;
                    this.course_total = response.data.count;
                    // console.log(this.course_list);
                }).catch(() => {
                    this.$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>
View Code
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新建CourseDetail

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<template>
    <div class="detail">
        <Header/>
        <div class="main">
            <div class="course-info">
                <div class="wrap-left">
                    <vue-core-video-player :src="mp4_url"
                                           controls="auto"
                                           autoplay
                                           :muted="true"
                                           title="致命诱惑"
                                           @play="playFunc"
                                           @pause="pauseFunc"
                    ></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&nbsp;&nbsp;&nbsp;&nbsp;课程总时长：{{course_info.sections}}课时/{{course_info.pub_sections}}小时&nbsp;&nbsp;&nbsp;&nbsp;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"></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://img.ksbbs.com/asset/Mon_1703/05cacb4e02f9d9e.mp4',
                mp4_url: [
                    {
                        src: 'http://rb1x3v1fm.sabkt.gdipper.com/%E8%87%B4%E5%91%BD%E8%AF%B1%E6%83%91320p.mp4',
                        resolution: 360,
                    },
                    {
                        src: 'http://rb1x3v1fm.sabkt.gdipper.com/%E8%87%B4%E5%91%BD%E8%AF%B1%E6%83%91720p.mp4',
                        resolution: 720,
                    },
                    {
                        src: 'http://rb1x3v1fm.sabkt.gdipper.com/%E8%87%B4%E5%91%BD%E8%AF%B1%E6%83%914k.mp4',
                        resolution: '4k',

                    }],


            }
        },
        created() {
            this.get_course_id();
            this.get_course_data();
            this.get_chapter();
        },
        methods: {
            playFunc(){
                console.log('开始了')
            },
            pauseFunc(){
                console.log('暂停了')
            },
            get_course_id() {
                // 获取地址栏上面的课程ID
                this.course_id = this.$route.params.pk
                if (this.course_id < 1) {
                    let _this = this;
                    _this.$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/actual/${this.course_id}/`).then(response => {
                    // window.console.log(response.data);
                    this.course_info = response.data;
                    console.log(this.course_info)
                }).catch(() => {
                    this.$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/chapter/`, {
                    params: {
                        "course_id": this.course_id,
                    }
                }).then(response => {
                    this.course_chapters = response.data;
                }).catch(error => {
                    window.console.log(error.response);
                })
            },
        },
        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>
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路由注册

router/index.js

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import Vue from 'vue'
import VueRouter from 'vue-router'

import HomeView from '../views/HomeView.vue'
import Login from "@/components/Login.vue";
import Register from "@/components/Register.vue";  // 导入login页面组件
import ActualCourse from "@/views/ActualCourse";  // 导入实战课页面
import FreeCourse from "@/views/FreeCourse";  // 导入免费课页面
import LightCourse from "@/views/LightCourse";  // 导入轻课页面
import CourseDetail from "@/views/CourseDetail";  // 导入课程详情

Vue.use(VueRouter)

// 具体路径
const routes = [
    {
        path: '/',
        name: 'home',
        component: HomeView
    },
    {
        path: '/login',
        name: 'login',
        component: Login
    },
    {
        path: '/register',
        name: 'register',
        component: Register
    },
    {
        path: '/actual-course',
        name: 'ActualCourse',
        component: ActualCourse
    },
    {
        path: '/free-course',
        name: 'FreeCourse',
        component: FreeCourse
    },
    {
        path: '/light-course',
        name: 'LightCourse',
        component: LightCourse
    },
    {
        path: '/actual-detail/:id',  // 类似于转换器
        name: 'CourseDetail',
        component: CourseDetail
    },
]


// 生成路由
const router = new VueRouter({
    mode: 'history',
    base: process.env.BASE_URL,
    routes  // 具体路径
})

export default router
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视频播放组件：vue-core-video-player的使用

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# 第一步：安装  npm install --save vue-core-video-player 
# 第二步：main.js 引入
import VueCoreVideoPlayer from 'vue-core-video-player'
Vue.use(VueCoreVideoPlayer)  # 默认是英文的
# 第二步(补充)国际化
Vue.use(VueCoreVideoPlayer, {
  lang: 'zh-CN'
})

# 第三步：在组件的html中使用
<div id="app">
  <div class="player-container">
    <vue-core-video-player src="http://img.ksbbs.com/asset/Mon_1703/05cacb4e02f9d9e.mp4"></vue-core-video-player>
  </div>
</div>

https://www.cnblogs.com/liuqingzheng/p/16204851.html  # 组件详细说明
https://github.com/core-player/vue-core-video-player-examples
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4、课程详情接口

# 课程列表(所有课程:分页，排序。。。)，再加一个课程详情
# 基于原来的课程列表接口，只需要再加入继承一个类：RetrieveModelMixin
class CourseView(GenericViewSet, ListModelMixin,RetrieveModelMixin):
    queryset = Course.objects.all().filter(is_delete=False, is_show=True).order_by('orders')
    serializer_class = CourseSerializer

5、课程章节接口

思路 
# 查询所有章节---》章节跟课程有关联，根据课程id号，过滤章节
# 比如：查询课程id为1的所有章节
# 本质就是查询所有章节，带过滤功能

路由

router.register('chapter', CourseChapterView, 'chapter')

课程章节接口

class CourseChapterView(GenericViewSet, ListModelMixin):
    queryset = CourseChapter.objects.all().filter(is_show=True,is_delete=False).order_by('orders')
    serializer_class =CourseChapterSerializer
    filter_backends = [DjangoFilterBackend]
    # 加入过滤---》按照课程id过滤--》第三方django-filter
    filter_fields = ['course_id']

序列化类

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class CourseSectionSerializer(serializers.ModelSerializer):
    class Meta:
        model = CourseSection
        fields = ['name', 'orders', 'section_link', 'duration', 'free_trail']


class CourseChapterSerializer(serializers.ModelSerializer):
    # 使用子序列化
    coursesections = CourseSectionSerializer(many=True)

    class Meta:
        model = CourseChapter
        # CourseChapter表中隐藏了一个coursesections字段，对象.coursesections
        fields = ['id', 'name', 'chapter', 'summary', 'coursesections']  # 返回该章节下的课时
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6、搜索功能接口

思路

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# 搜索功能--》配合搜索接口
# 类比：淘宝，京东，抖音，微博，百度---》这个接口本应该是最复杂，最有技术含量的接口
    -不同的人搜出来的结果都不一样，因为有个性化推荐
  -淘宝搜 [连体衣]--->【电饭煲】 199以下
# 咱们是最简单的实现，后期学完es：分布式全文检索引擎，基于es，写个百度
# 正常来讲：搜索可以搜索所有类型课程---》免费课，实战课，轻课--》咱们只写了实战课，只能搜出实战课

# 咱么如果只有实战课，实际上可以和查询所有实战课课程接口放一起---》为了方便后期的扩展，我们要单独写
# 咱么你的可以按照课程名字模糊匹配


# 速度慢的问题---》总共课程就不多--》mysql完全顶得住
# 课程名字和id 在redis中缓存
# 只要用搜索，对数量比较大，就上专业的搜索引擎---》es ---》倒排索引


# http://127.0.0.1:8000/api/v1/course/search/?search=%E5%85%A5%E9%97%A8
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视图类

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# 只针对于实战课的搜索接口
class CourseSearchView(GenericViewSet, ListModelMixin):
    queryset = Course.objects.all().filter(is_delete=False, is_show=True).order_by('orders')
    serializer_class = CourseSerializer
    filter_backends = [SearchFilter]
    search_fields = ['name', ]
    # 加入分页类
    pagination_class = CommonPageNumberPagination

    # 方便后期扩展
    # def list(self, request, *args, **kwargs):
    #     # 这个查的是实战课
    #     res=super().list(request, *args, **kwargs)
    #     # res2=查询免费课
    #     # res3=查询轻课
    #
    #     # 上面全是取数据库查询
    #     # 后期改成取es中查询，
    #     return APIResponse(result={'free_course':'字典','actual_course':res.data})
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7、搜索功能前段

思路

# 头部组件中的搜索框
# 搜索结果展示页面

搜索结果展示页面 header.vue

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<template>
    <div class="header">
        <div class="slogan">
            <p>老男孩IT教育 | 帮助有志向的年轻人通过努力学习获得体面的工作和生活</p>
        </div>
        <div class="nav">
            <ul class="left-part">
                <li class="logo">
                    <router-link to="/">
                        <img src="../assets/img/head-logo.svg" alt="">
                    </router-link>
                </li>
                <li class="ele">
                    <span @click="goPage('/free-course')" :class="{active: url_path === '/free-course'}">免费课</span>
                </li>
                <li class="ele">
                    <span @click="goPage('/actual-course')" :class="{active: url_path === '/actual-course'}">实战课</span>
                </li>
                <li class="ele">
                    <span @click="goPage('/light-course')" :class="{active: url_path === '/light-course'}">轻课</span>
                </li>
            </ul>

            <div class="right-part">
                <div v-if="username">
                    <span style="margin-right: 10px"><img :src="icon" alt="" width="35px" height="35px"></span>
                    <span>{{username}}</span>
                    <span class="line">|</span>
                    <span @click="handleLogout">退出</span>
                </div>
                <div v-else>
                    <span @click="put_login">登录</span>
                    <span class="line">|</span>
                    <span @click="put_register">注册</span>
                </div>
            </div>
            <Login v-if="is_login" @close="close_login" @go="put_register"/>
            <Register v-if="is_register" @close="close_register" @go="put_login"/>
            <form class="search">
                <div class="tips" v-if="is_search_tip">
                    <span @click="search_action('Python')">Python</span>
                    <span @click="search_action('Linux')">Linux</span>
                </div>
                <input type="text" :placeholder="search_placeholder" @focus="on_search" @blur="off_search"
                       v-model="search_word">
                <button type="button" class="glyphicon glyphicon-search" @click="search_action(search_word)"></button>
            </form>

        </div>
    </div>

</template>

<script>
    import Login from "@/components/Login";
    import Register from "@/components/Register";

    export default {
        name: "Header",
        data() {
            return {
                url_path: sessionStorage.url_path || '/',
                is_login: false,
                is_register: false,
                username: '',
                icon: '',
                is_search_tip: true,
                search_placeholder: '',
                search_word: ''

            }
        },
        methods: {
            goPage(url_path) {
                // 已经是当前路由就没有必要重新跳转
                if (this.url_path !== url_path) {
                    this.$router.push(url_path);
                }
                sessionStorage.url_path = url_path;
            },
            close_login() {
                this.is_login = false
                // 登陆了，从cookie去取出username,
                this.username = this.$cookies.get('username')
                this.icon = this.$cookies.get('icon')
            },
            close_register() {
                this.is_register = false
            },
            put_register() {
                this.is_register = true
                this.is_login = false
            },
            put_login() {
                this.is_register = false
                this.is_login = true
            },
            handleLogout() {
                // cookie中的数据删除就退出了
                this.$cookies.set('username', '')
                this.$cookies.set('token', '')
                this.$cookies.set('icon', '')
                this.username = ''
                this.icon = ''
            },
            search_action(search_word) {
                if (!search_word) {
                    this.$message('请输入要搜索的内容');
                    return
                }
                // this.$route当前路径，query ?name=lqz  -->this.$route.query.name 拿到lqz
                if (search_word !== this.$route.query.word) {
                    this.$router.push(`/course/search?word=${search_word}`);
                }
                this.search_word = '';
            },
            on_search() {
                this.search_placeholder = '请输入想搜索的课程';
                this.is_search_tip = false;
            },
            off_search() {
                this.search_placeholder = '';
                this.is_search_tip = true;
            },

        },
        created() {
            sessionStorage.url_path = this.$route.path;
            this.url_path = this.$route.path;
            // 登陆了，从cookie去取出username,
            this.username = this.$cookies.get('username')
            this.icon = this.$cookies.get('icon')
        },
        components: {
            Login, Register
        }
    }
</script>

<style scoped>
    .header {
        background-color: white;
        box-shadow: 0 0 5px 0 #aaa;
    }

    .header:after {
        content: "";
        display: block;
        clear: both;
    }

    .slogan {
        background-color: #eee;
        height: 40px;
    }

    .slogan p {
        width: 1200px;
        margin: 0 auto;
        color: #aaa;
        font-size: 13px;
        line-height: 40px;
    }

    .nav {
        background-color: white;
        user-select: none;
        width: 1200px;
        margin: 0 auto;

    }

    .nav ul {
        padding: 15px 0;
        float: left;
    }

    .nav ul:after {
        clear: both;
        content: '';
        display: block;
    }

    .nav ul li {
        float: left;
    }

    .logo {
        margin-right: 20px;
    }

    .ele {
        margin: 0 20px;
    }

    .ele span {
        display: block;
        font: 15px/36px '微软雅黑';
        border-bottom: 2px solid transparent;
        cursor: pointer;
    }

    .ele span:hover {
        border-bottom-color: orange;
    }

    .ele span.active {
        color: orange;
        border-bottom-color: orange;
    }

    .right-part {
        float: right;
    }

    .right-part .line {
        margin: 0 10px;
    }

    .right-part span {
        line-height: 68px;
        cursor: pointer;
    }

    .search {
        float: right;
        position: relative;
        margin-top: 22px;
        margin-right: 10px;
    }

    .search input, .search button {
        border: none;
        outline: none;
        background-color: white;
    }

    .search input {
        border-bottom: 1px solid #eeeeee;
    }

    .search input:focus {
        border-bottom-color: orange;
    }

    .search input:focus + button {
        color: orange;
    }

    .search .tips {
        position: absolute;
        bottom: 3px;
        left: 0;
    }

    .search .tips span {
        border-radius: 11px;
        background-color: #eee;
        line-height: 22px;
        display: inline-block;
        padding: 0 7px;
        margin-right: 3px;
        cursor: pointer;
        color: #aaa;
        font-size: 14px;

    }

    .search .tips span:hover {
        color: orange;
    }
</style>
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8、视频托管

什么是视频托管

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# 为什么会用到视频托管平台
    图片，视频，一般不放在自己项目中，因为只要访问一次图片，就向后端发一次请求，会消耗服务器资源
所以，我们通常把静态类型文件，托管到第三方平台，这个操作会花钱，它使用的是第三方平台的服务器资源和带宽
# 视频托管到云平台了
    -阿里 oss
    -七牛云存储。。。

# 公司里托管视频的多种方案
    1.托管到云平台：阿里 oss， 七牛云存储
  
    2.公司自己搭建文件服务器
        -fastdfs：搭建笔记   搭建完毕用python上传（上传比较麻烦）：https://zhuanlan.zhihu.com/p/372286804 
        -Minio：自己搭建Minio，阿里云上--》搭建笔记--》上传下载比较简单
        -图形化界面后台，登陆上看到文件
        -ceph：大型文件服务器，搭建比较码放

    3.如果文件小可以直接放到项目中
  
  
# 七牛云---》国内go语言推崇者--》项目基本都是go开发的---》许式伟
    我们的项目使用七牛云托管视频，七牛云是国内go语言推崇者，项目基本都是go开发的，掌门许式伟
    go的国内镜像：goproxy.cn 就是七牛云的
    -豆瓣python---》python写的

# 七牛云上传
    -手动上传---》手动配置视频地址--（不采取）
    -前端上传，返回连接地址，提交到咱们自己的后端，存到数据库
    -前端把视频传到咱们后端，咱们后端通过python传到七牛云，生成连接，存到数据库:https://developer.qiniu.com/kodo/1242/python
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七牛云快速使用

左上角—点击展开产品浮层—对象存储kodo—空间管理—新建空间

存储空间名称（不允许重复）—存储区域—访问控制

空间创建成功—绑定域名/立即绑定自定义域名（使用立即绑定自定义域名，平台会分配一个30天的试用域名）

文件管理—上传文件—选择文件

空间设置—可以选择访问控制为共有/私有

生成文件链接

可以把文件链接放入数据库中

七牛云上传文件

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from qiniu import Auth, put_file, etag
q = Auth('--', '-')  # 个人中心——秘钥管理
#要上传的空间
bucket_name = 'lqz'
#上传后保存的文件名
key = '致命诱惑.png'
#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 = './default.png'
ret, info = put_file(token, key, localfile, version='v2')
print(info)
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