无法分配"<SimpleLazyObject: <django.contrib.auth.models.AnonymousUser object at 0x000002523CE84E48

Question

我正在研究我的django网站的钱包余额方面。我想要这样一种情况，即一旦新用户在网站上注册，他的钱包余额就会设置为"0"，但我的代码抛出了上述错误。请协助。

视图

@unauthenticated_user
def registration(request):
form = CreateUserForm()
if request.method == 'POST':
form = CreateUserForm(request.POST)
if form.is_valid():
user = form.save()
username = form.cleaned_data.get('username')
group = Group.objects.get(name='customer')
user.groups.add(group)
Customer.objects.create(
user=user,
name=user.username,
)
instance = Balance(user=request.user, balance=10)
instance.save()
messages.success(request, 'Account was created for ' + username)
return redirect('loginuser')
context = {'form': form}
return render(request, 'account/registration.html', context)

型

class Balance(models.Model):
user = models.ForeignKey(User, on_delete=models.SET_NULL, null=True)
balance = models.IntegerField()
def __str__(self):
return str(self.user) if self.user else ''

追踪

Traceback (most recent call last):
File "C:UsersienovoDominationvenvlibsite-packagesdjangocorehandlersexception.py", line 34, in inner
response = get_response(request)
File "C:UsersienovoDominationvenvlibsite-packagesdjangocorehandlersbase.py", line 115, in _get_response
response = self.process_exception_by_middleware(e, request)
File "C:UsersienovoDominationvenvlibsite-packagesdjangocorehandlersbase.py", line 113, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:UsersienovoDominationaccountsdecorators.py", line 12, in wrapper_func
return view_func(request, *args, **kwargs)
File "C:UsersienovoDominationaccountsviews.py", line 64, in registration
instance = Balance(user=request.user, balance=10)
File "C:UsersienovoDominationvenvlibsite-packagesdjangodbmodelsbase.py", line 482, in __init__
_setattr(self, field.name, rel_obj)
File "C:UsersienovoDominationvenvlibsite-packagesdjangodbmodelsfieldsrelated_descriptors.py", line 219, in __set__
self.field.remote_field.model._meta.object_name,
Exception Type: ValueError at /registration/
Exception Value: Cannot assign "<SimpleLazyObject: <django.contrib.auth.models.AnonymousUser object at 0x000002523CE84E48>>": "Balance.user" must be a "User" instance.

Answer 1

您在registration()视图中分配了错误的user：

# in your views.py
instance = Balance(user=request.user, balance=10)

上面的代码引用了请求对象中的用户，在本例中，该用户将是未经身份验证的用户django.contrib.auth.models.AnonymousUser。如果要引用新创建的用户，则应使用CreateUserForm刚刚创建的user对象：

instance = Balance(user=user, balance=10)