我的Django應用程序在線登錄的用戶問題

Question

一如既往，我試圖改進我的Django application，我想創建一個Django模塊，它可以display all logged users。

這是我的模型類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) 

然後，我有我的觀點：

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回報：[]

和一個非常簡單的模板，只是爲了顯示登錄用戶：

{% block content %} 

List of logged users : 

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

{% endblock %} 

問題是：當我嘗試在我的軟件上連接不同的帳戶時，表LoggedUser仍爲空。我在劇本中犯了錯誤嗎？

Answer 1

可能是你所連接沒有連接到Django的信號

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)