Django 1.6 - 'AnonymousUser'對象沒有屬性'後端'

Question

我想在Django中創建一個簡單的用戶註冊，並且出現此錯誤。我已經在這裏查找它在計算器上：'AnonymousUser' object has no attribute 'backend',Django Register Form 'AnonymousUser' object has no attribute 'backend'並嘗試登錄前調用身份驗證。但我不斷收到這個錯誤。

任何人都可以幫助我嗎？

這裏是回溯

Traceback: 
File "/Library/Python/2.7/site-packages/django/core/handlers/base.py" in get_response 
    114.      response = wrapped_callback(request, *callback_args, **callback_kwargs) 
File "/Library/Python/2.7/site-packages/django/views/decorators/csrf.py" in wrapped_view 
    57.   return view_func(*args, **kwargs) 
File "/Users/harisaghadi/Dropbox/Senior Project/Django Tutorials/mysite/meddy1/views.py" in signup_user 
    51.   login(request, new_user) 
File "/Library/Python/2.7/site-packages/django/contrib/auth/__init__.py" in login 
    85.  request.session[BACKEND_SESSION_KEY] = user.backend 
File "/Library/Python/2.7/site-packages/django/utils/functional.py" in inner 
    214.   return func(self._wrapped, *args) 

Exception Type: AttributeError at /meddy1/signup/ 
Exception Value: 'AnonymousUser' object has no attribute 'backend' 

這裏是我的forms.py

class UserCreationForm(forms.ModelForm): 
""" 
A form that creates a user, with no privileges, from the given username and 
password. 
""" 
error_messages = { 
    'duplicate_username': _("A user with that username already exists."), 
    'password_mismatch': _("The two password fields didn't match."), 
} 
email = forms.EmailField(required=True, widget=forms.TextInput(attrs={'class': 'form-control','placeholder':'Please enter a valid email address so we can reach you.'})) 
username = forms.RegexField(label=_("Username"), max_length=30, 
    regex=r'^[\w.@+-]+$', 
    help_text=_("Required. 30 characters or fewer. Letters, digits and " 
       "@/./+/-/_ only."), 
    error_messages={ 
     'invalid': _("This value may contain only letters, numbers and " 
        "@/./+/-/_ characters.")}) 
password1 = forms.CharField(label=_("Password"), 
    widget=forms.PasswordInput) 
password2 = forms.CharField(label=_("Password confirmation"), 
    widget=forms.PasswordInput, 
    help_text=_("Enter the same password as above, for verification.")) 

class Meta: 
    model = User 
    fields = ("username",) 

def clean_username(self): 
    # Since User.username is unique, this check is redundant, 
    # but it sets a nicer error message than the ORM. See #13147. 
    username = self.cleaned_data["username"] 
    try: 
     User._default_manager.get(username=username) 
    except User.DoesNotExist: 
     return username 
    raise forms.ValidationError(
     self.error_messages['duplicate_username'], 
     code='duplicate_username', 
    ) 

def clean_password2(self): 
    password1 = self.cleaned_data.get("password1") 
    password2 = self.cleaned_data.get("password2") 
    if password1 and password2 and password1 != password2: 
     raise forms.ValidationError(
      self.error_messages['password_mismatch'], 
      code='password_mismatch', 
     ) 
    return password2 

def save(self, commit=True): 
    user = super(UserCreationForm, self).save(commit=False) 
    user.set_password(self.cleaned_data["password1"]) 
    if commit: 
     user.save() 

     userProfile = DoctorSeeker(user=user, name=name, email=email) 
     userProfile.save() 

    return user 

views.py

def index(request): 
    return HttpResponse("Welcome to Meddy") 

# -------------------- Authentication ---------------------- 
def signup(request): 
    return render(request, 'meddy1/signup.html', {}) 

@csrf_exempt 
def signup_user(request): 
    if request.method == 'POST': 
     form = UserCreationForm(request.POST,request.FILES) 
     if form.is_valid(): 
      new_user = authenticate(username=request.POST['username'],password=request.POST['password1']) 
      login(request, new_user) 

      return HttpResponseRedirect(reverse('index')) 
    else: 
     form = UserCreationForm() 
    return render(request, "meddy1/signup.html", {'form': form,'usersignup':True}) 



def login_user(request): 
    username = request.POST['username'] 
    password = request.POST['password'] 
    user = authenticate(username=username,password=password) 
    if user: 
     return render(request, 'meddy1/index.html') 
    else: 
     return HttpResponseRedirect('/') 


def logout_user(request): 
    logout(request) 
    return HttpResponseRedirect('/') 

models.py

class DoctorSeeker(models.Model): 
    name = models.CharField(max_length=30) 
    email = models.EmailField() 
    user = models.ForeignKey(User, unique=True) 

    def __unicode__(self): 
     return u"%s %s" % (self.name, self.email) 

Answer 1

既然您發現了類似的帖子，我認爲您的身份驗證不會真正驗證任何內容。它由於某種原因失敗。

我知道您向我們展示的視圖正試圖完成2件事 - 創建用戶並將其登錄？對？因爲它的名字是signup_user。

好吧。您有UserCreationForm，但您不保存它。所以你不能真正認證一個用戶，這在系統中還不存在。首先保存表單，然後調用身份驗證。