页面右边教师数的显示，teacher有个外键叫org，连接到表CourseOrg，而Course表有个外键叫course_org连接到CourseOrg。于是可以在CourseOrg里

    def get_teacher_nums(self):
        #获取机构教师数量
        return self.teacher_set.all().count()

于是在前端调用该机构教师数时

{{ course.course_org.get_teacher_nums }}

前端调用时不能写括号，不能调用需要传参数的方法。
接下来是相关课程。给每个课程增加一个字段，有相同字段的课程是相关课程。

class CourseDetailView(View):
    """
    课程详情页
    """
    def get(self,request,course_id):
        course= Course.objects.get(id=course_id)
        course.click_nums +=1
        course.save()

        has_fav_course = False
        has_fav_org = False

        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:
            relate_courses = Course.objects.filter(tag=tag)[:1]
        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
                                                    })

然后是收藏功能,这里的收藏和之前不完全一样，不需要从post获取数据