我的Django应用程序在线登录的用户问题

Question

一如既往，我试图改进我的Django application，我想创建一个Django模块，它可以display all logged users。

这是我的模型类LoggedUser：

class LoggedUser(models.Model): 
    user = models.OneToOneField(User, primary_key=True) 

    def __unicode__(self): 
     return self.user.username 

    def login_user(sender, request, user, **kwargs): 
     LoggedUser(user=user).save() 

    def logout_user(sender, request, user, **kwargs): 
     try: 
      u = LoggedUser.objects.get(user=user) 
      u.delete() 
     except LoggedUser.DoesNotExist: 
      pass 

    user_logged_in.connect(login_user) 
    user_logged_out.connect(logout_user) 

然后，我有我的观点：

def ConnectedUsers(request) : 

    logged_users=[user.user for user in LoggedUser.objects.all()] 
    print logged_users 

    context = { 
     "logged_users":logged_users, 
    } 

    return render(request, "UtilisateursConnectes.html", context) 

的print query回报：[]

和一个非常简单的模板，只是为了显示登录用户：

{% block content %} 

List of logged users : 

    {% for users in logged_users %} 
     <li>{{ users }}</li> 
    {% endfor %} 

{% endblock %} 

问题是：当我尝试在我的软件上连接不同的帐户时，表LoggedUser仍为空。我在剧本中犯了错误吗？

Answer 1

可能是你所连接没有连接到Django的信号

from django.contrib.auth.signals import user_logged_in, user_logged_out 

class LoggedUser(models.Model): 
    user = models.OneToOneField(User, primary_key=True) 

    def __unicode__(self): 
     return self.user.username 

def login_user(sender, request, user, **kwargs): 
     LoggedUser(user=user).save() 

def logout_user(sender, request, user, **kwargs): 
     try: 
      u = LoggedUser.objects.get(user=user) 
      u.delete() 
     except LoggedUser.DoesNotExist: 
      pass 

user_logged_in.connect(login_user) 
user_logged_out.connect(logout_user)