Django+Xadmin打造在线教育系统(六)

讲师相关功能实现

拷贝并修改teacher-list.html和teacher-detail.html,
继承base模板

    # 讲师列表
    path('teacher_list/', TeacherListView.as_view(), name="teacher_list"),

添加讲师的年龄字段

age = models.IntegerField(default=18, verbose_name=u"年龄")

分页仿照org_list, 注意__object_list__

# 课程讲师列表页
class TeacherListView(View):
    def get(self, request):
        all_teacher = Teacher.objects.all()
        # 总共有多少老师使用count进行统计
        teacher_nums = all_teacher.count()
        # 对讲师进行分页
        # 尝试获取前台get请求传递过来的page参数
        # 如果是不合法的配置参数默认返回第一页
        try:
            page = request.GET.get('page', 1)
        except PageNotAnInteger:
            page = 1
        # 这里指从allorg中取五个出来，每页显示5个
        p = Paginator(all_teacher, 4, request=request)
        teachers = p.page(page)
        return render(request, "teachers-list.html", {
        "all_teacher":teachers,
        "teacher_nums":teacher_nums
        })

排序 & 讲师排行榜

sort = request.GET.get("sort", "")
   if sort:
       if sort == "hot":
           all_teacher = all_teacher.order_by("-click_nums")

将sort return到前端。实现active
排行榜讲师

# 排行榜讲师
rank_teacher = Teacher.objects.all().order_by("-fav_nums")[:5]    

完善前端代码

讲师详情页

# 访问机构讲师
re_path('teacher/detail/(?P<teacher_id>\d+)/', TeacherDetailView.as_view(), name="teacher_detail"),

# 教师详情页面

class TeacherDetailView(View):
    def get(self, request, teacher_id):
        teacher = Teacher.objects.get(id = int(teacher_id))
        all_course = teacher.course_set.all()
        # 排行榜讲师
        rank_teacher = Teacher.objects.all().order_by("-fav_nums")[:5]

        has_fav_teacher = False
        if UserFavorite.objects.filter(user=request.user, fav_type=3, fav_id= teacher.id):
            has_fav_teacher = True
        has_fav_org = False
        if  UserFavorite.objects.filter(user=request.user, fav_type=2, fav_id= teacher.org.id):
            has_fav_org = True
        return render(request, "teacher-detail.html", {
            "teacher":teacher,
            "all_course":all_course,
            "rank_teacher":rank_teacher,
            "has_fav_teacher":has_fav_teacher,
            "has_fav_org":has_fav_org,
        })

收藏功能

    # 教师收藏和机构收藏
    has_teacher_faved = False
    if UserFavorite.objects.filter(user=request.user, fav_type=3, fav_id=teacher.id):
        has_teacher_faved = True

    has_org_faved = False
    if UserFavorite.objects.filter(user=request.user, fav_type=2, fav_id=teacher.org.id):
        has_org_faved = True

{% if has_teacher_faved %}已收藏{% else %}收藏{% endif %}

<a class="btn" id="jsRightBtn">{% if has_org_faved %}已收藏{% else %}收藏{% endif %}</a>

Ajax代码参考之前的