Django 'AnonymousUser'对象没有用于通过电子邮件登录的属性'_meta'

Question

我正在尝试在Django项目中同时允许电子邮件和用户名登录，因此，我在settings.py文件中添加了额外的后端。

AUTHENTICATION_BACKENDS = (
"accounts.auth.AuthenticationEmailBackend",
"django.contrib.auth.backends.ModelBackend",   
)

这是视图文件

def login_view(request):
if request.method == 'POST':
email =request.POST['username']
password = request.POST['password']
user = authenticate(username=email, password=password)
print(user)
#if user is not None:
login(request,user,backend="accounts.auth.AuthenticationEmailBackend")
return redirect('/')
else:
pass
return render(request,'accounts/login.html')

这是后端

class AuthenticationEmailBackend(object):
def authenticate(self, username=None, password=None, **kwargs):
UserModel = get_user_model()
try:
user = UserModel.objects.get(email=username)
except UserModel.DoesNotExist:
return None
else:
if user.check_password(password):
return user
return None
def get_user(self, user_id):
try:
return User.objects.get(pk=user_id)
except User.DoesNotExist:
return None

当我使用电子邮件时，当我单击表单上的登录按钮时会出现此错误，但当我使用用户名时，它运行良好，我可以登录到我的acc

'AnonymousUser' object has no attribute '_meta'

Answer 1

只需将其添加到settings.py文件中即可：

AUTH_USER_MODEL = 'appanme.AuthenticationEmailBackend'

并检查这是否解决了您的错误