django2给其它页面加上登陆校验

1、

参考地址：https://blog.csdn.net/Pansc2004/article/details/80494793

（1）https://blog.csdn.net/weixin_42134789/article/details/81700922?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-3.control&dist_request_id=1328592.8898.16147388268452879&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-3.control

（2）

https://www.cnblogs.com/ellisonzhang/p/11417162.html

清除浏览器缓存，直接访问 http://localhost/event_manage/，发现无需登陆，也可以直接访问该网页。

    Django中解决该问题的方法是，给对应的views.py中的方法加上装饰器 @login_required。

step1: 在views.py中加入如下代码

  

1. from django.shortcuts import render
2. from django.http import HttpResponse, HttpRequest, HttpResponseRedirect
3. from django.contrib import auth
4. from django.contrib.auth.decorators import login_required
5.  
6.  
7. # Create your views here.
8.  
9. # def index(request):
10. # return HttpResponse("欢迎!")
11.  
12. def index(request):
13. return render(request, "index.html")
14.  
15.  
16. def login_action(request):
17. # request = HttpRequest(request)
18. username = request.POST.get('username', '')
19. password = request.POST.get('password', '')
20. user = auth.authenticate(username=username, password=password)
21. if user is not None:
22. request.session['user'] = username # 将session信息记录到浏览器
23. request.session['psw'] = password
24. # Correct password, and the user is marked "active"
25. auth.login(request, user)
26. return HttpResponseRedirect('/event_manage/')
27. else:
28. return render(request, 'index.html', {'wronglyInput': '用户名或密码输入错误!'})
29.  
30. @login_required
31. def event_manage(request):
32. username = request.session.get('user', '') # 读取cookie
33. password = request.session.get('psw', '')
34. return render(request, "event_manage.html", {'user': username, 'psw': password})

step2: 重新尝试访问　http://localhost/event_manage/　，已经不能登陆了

step3: 虽然访问被成功限制了，但我们希望是自动跳转到index页面，让用户输入账号和密码。　注意上面的路径，@login_required会将其设置到 /account/login/的路径上去，那么只要我们在urls.py中做相应的路径设置，让其跳转到index页面即可。

1. urlpatterns = [
2. url(r'^$', views.index),
3. url(r'^index/$', views.index),
4. url(r'^admin/', admin.site.urls),
5. url(r'^login_action/', views.login_action),
6. url(r'^event_manage/', views.event_manage),
7. url(r'^accounts/login/$', views.index),
8. ]

  step4: 再次运行，访问event_manage，跳转成功