python之Django 1.6之'AnonymousUser' 对象没有属性 'backend'

我正在尝试在 Django 中创建一个简单的用户注册，但出现此错误。我在 stackoverflow 上查过:'AnonymousUser' object has no attribute 'backend' , Django Register Form 'AnonymousUser' object has no attribute 'backend'并尝试在登录前调用身份验证。但我一直收到这个错误。

谁能帮我解决这个问题？

这是回溯

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' 

这是我的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 

View .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('/') 

模型.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) 

请您参考如下方法:

既然你发现了类似的帖子，我认为，你明白，你的身份验证并没有真正验证任何东西。由于某种原因它失败了。

我知道您向我们展示的 View 试图完成两件事 - 创建用户并让他登录？正确的？因为它的名字是 signup_user。

嗯。您有 UserCreationForm，但您没有保存它。因此，您无法真正对系统中尚不存在的用户进行身份验证。先保存您的表单，然后调用身份验证。