Django+xadmin打造在线教育平台（六）

Django+xadmin打造在线教育平台（六）

 

代码

github下载

九、课程章节信息

9.1.模板和urls

 拷贝course-comments.html 和 course-video.html放入 templates目录下

先改course-video.html，同样继承base.html，然后里面有属于自己的样式，也要保留

（1）配置url和视图

　　# 课程章节信息页
    re_path('info/(?P<course_id>d+)/', CourseInfoView.as_view(), name="course_info"),

class CourseInfoView(View):
    '''课程章节信息'''
    def get(self, request, course_id):
        course = Course.objects.get(id=int(course_id))
        return render(request, "course-video.html", {
            "course": course,
        })

（2）配置相关的链接

首先修改course-vedio.html中custom_bread里面的链接

{% block custom_bread %}
    <section>
        <div class="wp">
        <div class="crumbs">
            <ul>
                <li><a href="index.html">首页</a>></li>
                <li><a href="{% url 'course:course_list' %}">公开课程</a>></li>
                <li><a href="{% url 'course:course_detail' course.id %}">课程详情</a>></li>
                <li>章节信息</li>
            </ul>
        </div>
    </div>
    </section>
{% endblock %}

 

然后修改course-detetail.html中点“开始学习”的链接

　　　　　　　　　　　　　　<div class="btns">
                            <div class="btn colectgroupbtn"  id="jsLeftBtn">
                                {% if has_fav_course %}已收藏{% else %}收藏{% endif %}
                            </div>
                                <div class="buy btn"><a style="color: white" href="{% url 'course:course_info' course.id %}">开始学习</a></div>
                        </div>

9.2.章节和视频

（1）给Vedio Model添加一个url字段

url = models.CharField('访问地址',default='',max_length=200)

 

在xadmin后台添加课程章节和章节视频信息及链接

python-->>章节-->>视频

（2）给Course添加一个获取章节的方法

    def get_course_lesson(self):
        #获取课程的章节
        return self.lesson_set.all()

 

（3）给Lesson添加一个获取所有视频的方法

    def get_lesson_vedio(self):
        #获取章节所有视频
        return self.video_set.all()

 

（4）给Vedio添加一个学习时长的字段

learn_times = models.IntegerField("学习时长(分钟数)",default=0)

 

课程章节和视频

<div class="mod-chapters">
                    {% for lesson in course.get_course_lesson %}
                    <div class="chapter chapter-active" >
                        <h3>
                            <strong><i class="state-expand"></i>{{ lesson.name }}</strong>
                        </h3>
                        <ul class="video">
                            {% for vedio in lesson.get_lesson_vedio %}
                            <li>
                                <a target="_blank" href='{{ vedio.url }}' class="J-media-item studyvideo">{{ vedio.name }} ({{ vedio.learn_times }})
                                    <i class="study-state"></i>
                                </a>
                            </li>
                            {% endfor %}
                        </ul>
                    </div>
                    {% endfor %}
                </div>

9.3.资料下载

 （1）在后端添加资源文件

 

（2）view中把当前课程的课程资源传到前端

class CourseInfoView(View):
    def get(self,request,course_id):
        course = Course.objects.get(id=int(course_id))
        all_resources = CourseResource.objects.filter(course=course)
        return render(request,'course-video.html',{'course':course,'all_resources':all_resources})

（3）前端页面显示

<div class="box mb40">
                        <h4>资料下载</h4>
                        <ul class="downlist">
                            {% for course_resource in all_resources %}
                            <li>
                                <span ><i class="aui-iconfont aui-icon-file"></i>&nbsp;&nbsp;{{ course_resource.name }}</span>
                                <a href="{{ MEDIA_URL }}{{ course_resource.download }}" class="downcode" target="_blank" download="" data-id="274" title="">下载</a>
                            </li>
                            {% endfor %}
                        </ul>
                    </div>

 点下载可以下载我们在后端传上去的文件

 

 把课程的信息也顺便改了

 

 <div class="hd">
                <h2 class="l">{{ course.name }}</h2>
            </div>
            <div class="statics clearfix">
                <div class="static-item ">
                    <span class="meta-value"><strong>{{ course.get_degree_display }}</strong></span>
                    <span class="meta">难度</span>
                    <em></em>
                </div>
                <div class="static-item static-time">
                    <span class="meta-value">{{ course.learn_times }}分钟</span>
                    <span class="meta">时长</span>
                    <em></em>
                </div>
                <div class="static-item">
                    <span class="meta-value"><strong>{{ course.students }}</strong></span>
                    <span class="meta">学习人数</span>
                    <em></em>
                </div>
            </div>

9.4.讲师提示

（1）给Course添加一个teacher外键

teacher = models.ForeignKey(Teacher,verbose_name='讲师',null=True,blank=True,on_delete=models.CASCADE)

 

在后台为课程添加一个讲师

（2）给Course再添加两个字段 “课程须知”和“老师告诉你能学到什么”

youneed_know = models.CharField('课程须知',max_length=300,default='')
teacher_tell = models.CharField('老师告诉你',max_length=300,default='')

 

（3）前端显示

<div class="box mb40">
                        <h4>讲师提示</h4>
                        <div class="teacher-info">
                            <a href="/u/315464/courses?sort=publish" target="_blank">
                                <img src='{{ MEDIA_URL }}{{ course.teacher.image }}' width='80' height='80' />
                            </a>
        <span class="tit">
          <a href="/u/315464/courses?sort=publish" target="_blank">{{ course.teacher.name }}</a>
        </span>
                            <span class="job">{{ course.teacher.work_position }}</span>
                        </div>
                        <div class="course-info-tip">
                            <dl class="first">
                                <dt>课程须知</dt>
                                <dd class="autowrap">{{ course.youneed_know }}</dd>
                            </dl>
                            <dl>
                                <dt>老师告诉你能学到什么？</dt>
                                <dd class="autowrap">{{ course.teacher_tell }}</dd>
                            </dl>
                        </div>
                    </div>

9.5.课程评论

 （1）course-comments.html照样继承base.html

 

（2）url和视图

#课程评论
    re_path('comment/(?P<course_id>d+)/', CommentsView.as_view(), name="course_comments"),

class CommentsView(View):
    '''课程评论'''
    def get(self, request, course_id):
        course = Course.objects.get(id=int(course_id))
        all_resources = CourseResource.objects.filter(course=course)
        all_comments = CourseComments.objects.all()
        return render(request, "course-comment.html", {
            "course": course,
            "all_resources": all_resources,
            'all_comments':all_comments,
        })

（3）添加链接

在course-vedio.html中修改 “章节”和“评论”的链接

<div class="mod-tab-menu">
                    <ul class="course-menu clearfix">
                        <li><a class="ui-tabs-active active" id="learnOn"  href="{% url 'course:course_info' course.id %}"><span>章节</span></a></li>
                        <li><a id="commentOn" class="" href="{% url 'course:course_comments' course.id %}"><span>评论</span></a></li>
                    </ul>
                </div>

然后把评论页跟章节页的相同（‘课程’，‘资料下载’，‘讲师提示’）的地方直接果汁过来

（4）添加评论

添加评论的url和后台处理View

#添加评论
    path('add_comment/', AddCommentsView.as_view(), name="add_comment"),

#添加评论
class AddCommentsView(View):
    '''用户评论'''
    def post(self, request):
        if not request.user.is_authenticated:
            # 未登录时返回json提示未登录，跳转到登录页面是在ajax中做的
            return HttpResponse('{"status":"fail", "msg":"用户未登录"}', content_type='application/json')
        course_id = request.POST.get("course_id", 0)
        comments = request.POST.get("comments", "")
        if int(course_id) > 0 and comments:
            # 实例化一个course_comments对象
            course_comments = CourseComments()
            # 获取评论的是哪门课程
            course = Course.objects.get(id = int(course_id))
            # 分别把评论的课程、评论的内容和评论的用户保存到数据库
            course_comments.course = course
            course_comments.comments = comments
            course_comments.user = request.user
            course_comments.save()
            return HttpResponse('{"status":"success", "msg":"评论成功"}', content_type='application/json')
        else:
            return HttpResponse('{"status":"fail", "msg":"评论失败"}', content_type='application/json')

前端Ajax添加用户的评论

{% block custom_js %}
    <script type="text/javascript">
    //添加评论
    $('#js-pl-submit').on('click', function(){
        var comments = $("#js-pl-textarea").val()
        if(comments == ""){
            alert("评论不能为空")
            return
        }
        $.ajax({
            cache: false,
            type: "POST",
            url:"{% url 'course:add_comment' %}",
            data:{'course_id':{{ course.id }}, 'comments':comments},
            async: true,
            beforeSend:function(xhr, settings){
                xhr.setRequestHeader("X-CSRFToken", "{{ csrf_token }}");
            },
            success: function(data) {
                if(data.status == 'fail'){
                    if(data.msg == '用户未登录'){
                        window.location.href="/login/";
                    }else{
                        alert(data.msg)
                    }

                }else if(data.status == 'success'){
                    window.location.reload();//刷新当前页面.
                }
            },
        });
    });

</script>
{% endblock %}

 显示评论的信息

<div id="course_note">
                            <ul class="mod-post" id="comment-list">
                                {% for user_comment in all_comments %}
                                    <li class="post-row">
                                        <div class="media">
                                        <span target="_blank"><img src='{{ MEDIA_URL }}{{ user_comment.user.image }}'
                                                                   width='40' height='40'/></span>
                                        </div>
                                        <div class="bd">
                                            <div class="tit">
                                                <span target="_blank">{{ user_comment.user.username }}</span>
                                            </div>
                                            <p class="cnt">
                                                {{ user_comment.comments }}
                                            <div class="footer clearfix">
                                                <span title="创建时间"
                                                      class="l timeago">时间：{{ user_comment.add_time }}</span>
                                            </div>
                                        </div>
                                    </li>
                                {% endfor %}


                            </ul>
                        </div>

 

 9.6.相关课程推荐

(1)view

#相关课程推荐
        # 找到学习这门课的所有用户
        user_courses = UserCourse.objects.filter(course=course)
        # 找到学习这门课的所有用户的id
        user_ids = [user_course.user_id for user_course in user_courses]
        # 通过所有用户的id,找到所有用户学习过的所有过程
        all_user_courses = UserCourse.objects.filter(user_id__in=user_ids)
        # 取出所有课程id
        course_ids = [all_user_course.course_id for all_user_course in all_user_courses]
        # 通过所有课程的id,找到所有的课程，按点击量去五个
        relate_courses = Course.objects.filter(id__in=course_ids).order_by("-click_nums")[:5]

 

(2)前端  coure-vedio.html

<div class="cp-other-learned  js-comp-tabs">
                        <div class="cp-header clearfix">
                            <h2 class="cp-tit l">该课的同学还学过</h2>
                        </div>
                        <div class="cp-body">
                            <div class="cp-tab-pannel js-comp-tab-pannel" data-pannel="course" style="display: block">
                                <!-- img 200 x 112 -->
                                <ul class="other-list">
                                    {% for relate_course in relate_courses %}
                                    <li class="curr">
                                        <a href="{% url 'course:course_detail' relate_course.id %}" target="_blank">
                                            <img src="{{ MEDIA_URL }}{{ relate_course.image }}" alt="{{ relate_course.name }}">
                                            <span class="name autowrap">{{ relate_course.name }}</span>
                                        </a>
                                    </li>
                                    {% endfor %}

                                </ul>
                            </div>

                        </div>
                    </div>

 9.7.把课程与用户关联起来

当用户点了“开始学习”之后，应该把这门课程与用户关联起来，在这之前应该需要做个判断，如果没有登录，则让用户先登录才可以。

如果是用函数方式写的话直接加个装饰器（@login_required）就可以，但是我们是用类的方式写的，必须用继承的方式

在utils目录下创建文件  mixin_utils.py（最基本的类都放在mixin_utils.py里面），代码如下：

# apps/utils/mixin_utils.py

from django.contrib.auth.decorators import login_required
from django.utils.decorators import method_decorator

class LoginRequiredMixin(object):
    @method_decorator(login_required(login_url='/login/'))   
    def dispatch(self,request,*args,**kwargs):
        return super(LoginRequiredMixin, self).dispatch(request,*args,**kwargs)

在django中已Mixin结尾的，就代表最基本的View

然后让CourseInfoView和CommentsView都继承LoginRequiredMixin

class CommentsView(LoginRequiredMixin,View):
.
.
.

class CourseInfoView(LoginRequiredMixin,View):
.
.
.

 继承后，没有登录的用户点“开始学习”，自动跳到login界面

把用户与课程关联起来

# 查询用户是否已经学习了该课程
        user_courses = UserCourse.objects.filter(user=request.user,course=course)
        if not user_courses:
            # 如果没有学习该门课程就关联起来
            user_course = UserCourse(user=request.user,course=course)
            user_course.save()

全部代码：

class CourseInfoView(LoginRequiredMixin,View):
    '''课程章节信息'''
    def get(self,request,course_id):
        course = Course.objects.get(id=int(course_id))

        # 查询用户是否已经学习了该课程
        user_courses = UserCourse.objects.filter(user=request.user,course=course)
        if not user_courses:
            # 如果没有学习该门课程就关联起来
            user_course = UserCourse(user=request.user,course=course)
            user_course.save()

        #相关课程推荐
        # 找到学习这门课的所有用户
        user_courses = UserCourse.objects.filter(course=course)
        # 找到学习这门课的所有用户的id
        user_ids = [user_course.user_id for user_course in user_courses]
        # 通过所有用户的id,找到所有用户学习过的所有过程
        all_user_courses = UserCourse.objects.filter(user_id__in=user_ids)
        # 取出所有课程id
        course_ids = [all_user_course.course_id for all_user_course in all_user_courses]
        # 通过所有课程的id,找到所有的课程，按点击量去五个
        relate_courses = Course.objects.filter(id__in=course_ids).order_by("-click_nums")[:5]

        # 资源
        all_resources = CourseResource.objects.filter(course=course)
        return render(request,'course-video.html',{
            'course':course,
            'all_resources':all_resources,
            'relate_courses':relate_courses,
        })

 现在你点“开始学习”其它课程后，在“该课的同学好学过”下面能看到，说明没问题

9.8.视频播放页面

（1）把course-paly.html拷贝到templates目录下

主要不同的是css和一个vedio div

下载video-js.min.css和video.min.js分别放到css和js目录下

（2）url

# 课程视频播放页
    path('video/(?P<video_id>d+)/', VideoPlayView.as_view(), name="video_play"),

（3）修改course-video.html中video的链接

　　　　　　　　　　　　　　　　　　<li>
                                <a target="_blank" href='{% url 'course:video_play' vedio.id %}' class="J-media-item studyvideo">{{ vedio.name }} ({{ vedio.learn_times }})
                                    <i class="study-state"></i>
                                </a>
                            </li>

（4）view

class VideoPlayView(LoginRequiredMixin, View):
    '''课程章节视频播放页面'''
    def get(self,request,video_id):
        video = Video.objects.get(id=int(video_id))
        #通过外键找到章节再找到视频对应的课程
        course = video.lesson.course

        course.students += 1
        course.save()

        # 查询用户是否已经学习了该课程
        user_courses = UserCourse.objects.filter(user=request.user,course=course)
        if not user_courses:
            # 如果没有学习该门课程就关联起来
            user_course = UserCourse(user=request.user,course=course)
            user_course.save()

        #相关课程推荐
        # 找到学习这门课的所有用户
        user_courses = UserCourse.objects.filter(course=course)
        # 找到学习这门课的所有用户的id
        user_ids = [user_course.user_id for user_course in user_courses]
        # 通过所有用户的id,找到所有用户学习过的所有过程
        all_user_courses = UserCourse.objects.filter(user_id__in=user_ids)
        # 取出所有课程id
        course_ids = [all_user_course.course_id for all_user_course in all_user_courses]
        # 通过所有课程的id,找到所有的课程，按点击量去五个
        relate_courses = Course.objects.filter(id__in=course_ids).order_by("-click_nums")[:5]

        # 资源
        all_resources = CourseResource.objects.filter(course=course)
        return render(request,'course-play.html',{
            'course':course,
            'all_resources':all_resources,
            'relate_courses':relate_courses,
            'video':video,
        })

# course/views.py

from django.shortcuts import render
from django.views.generic import View
from .models import Course,CourseResource,Video
from operation.models import UserFavorite,CourseComments,UserCourse
from pure_pagination import Paginator, EmptyPage, PageNotAnInteger
from django.http import HttpResponse
from utils.mixin_utils import LoginRequiredMixin


class CourseListView(View):
    '''课程列表'''
    def get(self, request):
        all_courses = Course.objects.all().order_by('-add_time')
        # 热门课程推荐
        hot_courses = Course.objects.all().order_by('-click_nums')[:3]
        # 排序
        sort = request.GET.get('sort', "")
        if sort:
            if sort == "students":
                all_courses = all_courses.order_by("-students")
            elif sort == "hot":
                all_courses = all_courses.order_by("-click_nums")
        # 分页
        try:
            page = request.GET.get('page', 1)
        except PageNotAnInteger:
            page = 1
        p = Paginator(all_courses,2 , request=request)
        courses = p.page(page)
        return render(request, "course-list.html", {
            "all_courses":courses,
            'sort': sort,
            'hot_courses':hot_courses,

        })


class CourseDetailView(View):
    '''课程详情'''
    def get(self, request, course_id):
        course = Course.objects.get(id=int(course_id))
        # 课程的点击数加1
        course.click_nums += 1
        course.save()
        # 课程标签
        # 通过当前标签，查找数据库中的课程
        has_fav_course = False
        has_fav_org = False

        # 必须是用户已登录我们才需要判断。
        if request.user.is_authenticated:
            if UserFavorite.objects.filter(user=request.user, fav_id=course.id, fav_type=1):
                has_fav_course = True
            if UserFavorite.objects.filter(user=request.user, fav_id=course.course_org.id, fav_type=2):
                has_fav_org = True
        tag = course.tag
        if tag:
            # 需要从1开始不然会推荐自己
            relate_courses = Course.objects.filter(tag=tag)[:2]
        else:
            relate_courses = []
        return  render(request, "course-detail.html", {
            'course':course,
            'relate_courses':relate_courses,
            "has_fav_course": has_fav_course,
            "has_fav_org": has_fav_org,
        })


class CourseInfoView(LoginRequiredMixin,View):
    '''课程章节信息'''
    def get(self,request,course_id):
        course = Course.objects.get(id=int(course_id))
        course.students += 1
        course.save()
        # 查询用户是否已经学习了该课程
        user_courses = UserCourse.objects.filter(user=request.user,course=course)
        if not user_courses:
            # 如果没有学习该门课程就关联起来
            user_course = UserCourse(user=request.user,course=course)
            user_course.save()

        #相关课程推荐
        # 找到学习这门课的所有用户
        user_courses = UserCourse.objects.filter(course=course)
        # 找到学习这门课的所有用户的id
        user_ids = [user_course.user_id for user_course in user_courses]
        # 通过所有用户的id,找到所有用户学习过的所有过程
        all_user_courses = UserCourse.objects.filter(user_id__in=user_ids)
        # 取出所有课程id
        course_ids = [all_user_course.course_id for all_user_course in all_user_courses]
        # 通过所有课程的id,找到所有的课程，按点击量去五个
        relate_courses = Course.objects.filter(id__in=course_ids).order_by("-click_nums")[:5]

        # 资源
        all_resources = CourseResource.objects.filter(course=course)
        return render(request,'course-video.html',{
            'course':course,
            'all_resources':all_resources,
            'relate_courses':relate_courses,
        })


class CommentsView(LoginRequiredMixin,View):
    '''课程评论'''
    def get(self, request, course_id):
        course = Course.objects.get(id=int(course_id))
        all_resources = CourseResource.objects.filter(course=course)
        all_comments = CourseComments.objects.all()
        return render(request, "course-comment.html", {
            "course": course,
            "all_resources": all_resources,
            'all_comments':all_comments,
        })


#添加评论
class AddCommentsView(View):
    '''用户评论'''
    def post(self, request):
        if not request.user.is_authenticated:
            # 未登录时返回json提示未登录，跳转到登录页面是在ajax中做的
            return HttpResponse('{"status":"fail", "msg":"用户未登录"}', content_type='application/json')
        course_id = request.POST.get("course_id", 0)
        comments = request.POST.get("comments", "")
        if int(course_id) > 0 and comments:
            # 实例化一个course_comments对象
            course_comments = CourseComments()
            # 获取评论的是哪门课程
            course = Course.objects.get(id = int(course_id))
            # 分别把评论的课程、评论的内容和评论的用户保存到数据库
            course_comments.course = course
            course_comments.comments = comments
            course_comments.user = request.user
            course_comments.save()
            return HttpResponse('{"status":"success", "msg":"评论成功"}', content_type='application/json')
        else:
            return HttpResponse('{"status":"fail", "msg":"评论失败"}', content_type='application/json')


class VideoPlayView(LoginRequiredMixin, View):
    '''课程章节视频播放页面'''
    def get(self,request,video_id):
        video = Video.objects.get(id=int(video_id))
        #通过外键找到章节再找到视频对应的课程
        course = video.lesson.course

        course.students += 1
        course.save()

        # 查询用户是否已经学习了该课程
        user_courses = UserCourse.objects.filter(user=request.user,course=course)
        if not user_courses:
            # 如果没有学习该门课程就关联起来
            user_course = UserCourse(user=request.user,course=course)
            user_course.save()

        #相关课程推荐
        # 找到学习这门课的所有用户
        user_courses = UserCourse.objects.filter(course=course)
        # 找到学习这门课的所有用户的id
        user_ids = [user_course.user_id for user_course in user_courses]
        # 通过所有用户的id,找到所有用户学习过的所有过程
        all_user_courses = UserCourse.objects.filter(user_id__in=user_ids)
        # 取出所有课程id
        course_ids = [all_user_course.course_id for all_user_course in all_user_courses]
        # 通过所有课程的id,找到所有的课程，按点击量去五个
        relate_courses = Course.objects.filter(id__in=course_ids).order_by("-click_nums")[:5]

        # 资源
        all_resources = CourseResource.objects.filter(course=course)
        return render(request,'course-play.html',{
            'course':course,
            'all_resources':all_resources,
            'relate_courses':relate_courses,
            'video':video,
        })

{% extends 'base.html' %}

{% block titile %}
    {{ video.name }} 在线网
{% endblock %}

{% load staticfiles %}
<!--crumbs start-->
{% block custom_bread %}
    <section>
        <div class="wp">
            <div class="crumbs">
                <ul>
                    <li><a href="{% url 'index' %}">首页</a>></li>
                    <li><a href="{% url 'course:list' %}">公开课程</a>></li>
                    <li><a href="{% url 'course:course_detail' course.id %}">{{ course.name }}</a>></li>
                    <li></li>
                </ul>
            </div>
        </div>
    </section>
{% endblock %}

{% block custom_css %}
    <link rel="stylesheet" type="text/css" href="{% static 'css/video-js.min.css' %}">
    <link rel="stylesheet" type="text/css" href="{% static 'css/muke/base.css' %}"/>
    <link rel="stylesheet" type="text/css" href="{% static 'css/muke/common-less.css' %}"/>
    <link rel="stylesheet" type="text/css" href="{% static 'css/muke/course/learn-less.css' %}"/>
    <link rel="stylesheet" type="text/css" href="{% static 'css/mooc.css' %}"/>
    <link rel="stylesheet" type="text/css" href="{% static 'css/muke/course/common-less.css' %}">
    <style>
        .video-js .vjs-big-play-button {
            top: 50%;
            left: 50%;
        }
    </style>
{% endblock %}

{% block custom_js %}
    <script src="{% static 'js/video.min.js' %}" type="text/javascript"></script>
{% endblock %}

{% block content %}
    <div id="main">

        <div class="course-info-main clearfix w has-progress">
            <div style="1200px;height: 650px; margin-left:100px">
                <video id="example_video_1" class="video-js vjs-default-skin" controls preload="none" width="1200"
                       poster="http://video-js.zencoder.com/oceans-clip.png"
                       data-setup="" type="video/mp4">
                    <source src="{{ video.url }}">
                </video>
            </div>
            <div class="info-bar clearfix">
                <div class="content-wrap clearfix">
                    <div class="content">
                        <div class="mod-tab-menu">
                            <ul class="course-menu clearfix">
                                <li><a class="ui-tabs-active active" id="learnOn"
                                       href="{% url 'course:course_info' course.id %}"><span>章节</span></a></li>
                                <li><a id="commentOn" class=""
                                       href="{% url 'course:course_comments' course.id %}"><span>评论</span></a></li>
                            </ul>
                        </div>
                        <div id="notice" class="clearfix">
                            <div class="l"><strong>课程公告:</strong> <a
                                    href="javascript:void(0)">Spring的文档以及相关的jar文件已上传</a></div>
                        </div>

                        <div class="mod-chapters">
                            {% for lesson in course.lesson_set.get_queryset %}
                                <div class="chapter chapter-active">
                                    <h3>
                                        <strong><i class="state-expand"></i>{{ lesson.name }}</strong>
                                    </h3>
                                    <ul class="video">

                                        {% for video in lesson.video_set.get_queryset %}
                                            <li>
                                                <a target="_blank" href='{% url 'course:video_play' video.id %}'
                                                   class="J-media-item studyvideo">{{ video.name }}
                                                    ({{ video.learn_times }})
                                                    <i class="study-state"></i>
                                                </a>
                                            </li>
                                        {% endfor %}

                                    </ul>
                                </div>
                            {% endfor %}
                        </div>

                    </div>
                    <div class="aside r">
                        <div class="bd">

                            <div class="box mb40">
                                <h4>资料下载</h4>
                                <ul class="downlist">
                                    {% for course_resource in course.courseresource_set.get_queryset %}
                                        <li>
                                            <span><i
                                                    class="aui-iconfont aui-icon-file"></i>&nbsp;&nbsp;{{ course_resource.name }}</span>
                                            <a href="{{ MEDIA_URL }}{{ course_resource.download }}" class="downcode"
                                               target="_blank" download="" data-id="274" title="">下载</a>
                                        </li>
                                    {% endfor %}
                                </ul>
                            </div>
                            <div class="box mb40">
                                <h4>讲师提示</h4>
                                <div class="teacher-info">
                                    <a href="{% url 'org:teacher_detail' course.teacher.id %}" target="_blank">
                                        <img src='{{ MEDIA_URL }}{{ course.teacher.image }}' width='80' height='80'/>
                                    </a>
                                    <span class="tit">
          <a href="{% url 'org:teacher_detail' course.teacher.id %}" target="_blank">{{ course.teacher.name }}</a>
        </span>
                                    <span class="job">{{ course.teacher.work_position }}</span>
                                </div>
                                <div class="course-info-tip">
                                    <dl class="first">
                                        <dt>课程须知</dt>
                                        <dd class="autowrap">{{ course.you_need_know }}</dd>
                                    </dl>
                                    <dl>
                                        <dt>老师告诉你能学到什么？</dt>
                                        <dd class="autowrap">{{ course.teacher_tell }}</dd>
                                    </dl>
                                </div>
                            </div>


                            <div class="cp-other-learned  js-comp-tabs">
                                <div class="cp-header clearfix">
                                    <h2 class="cp-tit l">该课的同学还学过</h2>
                                </div>
                                <div class="cp-body">
                                    <div class="cp-tab-pannel js-comp-tab-pannel" data-pannel="course"
                                         style="display: block">
                                        <!-- img 200 x 112 -->
                                        <ul class="other-list">

                                            {% for relate_course in relate_courses %}
                                                <li class="curr">
                                                    <a href="{% url 'course:course_detail' relate_course.id %}"
                                                       target="_blank">
                                                        <img src="{{ MEDIA_URL }}{{ relate_course.image }}"
                                                             alt="{{ relate_course.name }}">
                                                        <span class="name autowrap">{{ relate_course.name }}</span>
                                                    </a>
                                                </li>
                                            {% endfor %}

                                        </ul>
                                    </div>
                                    <div class="cp-tab-pannel js-comp-tab-pannel" data-pannel="plan">
                                        <ul class="other-list">

                                        </ul>
                                    </div>
                                </div>
                            </div>

                        </div>
                    </div>
                </div>
                <div class="clear"></div>

            </div>

        </div>
    </div>
{% endblock %}