Unusual error in Django. Cannot login into admin a

Question

This is a weird problem that I am facing in my Django application.

Configuration :

• Python 3.6
• Django 2.0.6
• DB : Djongo (MongoDB connector : Djongo repository)

I have overwritten the create_superuser to:

def create_superuser(self, email, is_staff, password):
    user = self.model(
        email=email,
        is_staff=True,
        is_active=True,
    )
    user.set_password(password)
    user.save(using=self._db)
    return user 

I am able to create the superuser successfully but I am not able to login into the admin page. Following is my traceback:

Internal Server Error: /admin/login/
Traceback (most recent call last):
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/core/handlers/exception.py", line 35, in inner
    response = get_response(request)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/core/handlers/base.py", line 128, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/core/handlers/base.py", line 126, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/views/decorators/cache.py", line 44, in _wrapped_view_func
    response = view_func(request, *args, **kwargs)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/contrib/admin/sites.py", line 398, in login
    return LoginView.as_view(**defaults)(request)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/views/generic/base.py", line 69, in view
    return self.dispatch(request, *args, **kwargs)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/utils/decorators.py", line 62, in _wrapper
    return bound_func(*args, **kwargs)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/views/decorators/debug.py", line 76, in sensitive_post_parameters_wrapper
    return view(request, *args, **kwargs)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/utils/decorators.py", line 58, in bound_func
    return func.__get__(self, type(self))(*args2, **kwargs2)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/utils/decorators.py", line 62, in _wrapper
    return bound_func(*args, **kwargs)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/utils/decorators.py", line 142, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/utils/decorators.py", line 58, in bound_func
    return func.__get__(self, type(self))(*args2, **kwargs2)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/utils/decorators.py", line 62, in _wrapper
    return bound_func(*args, **kwargs)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/views/decorators/cache.py", line 44, in _wrapped_view_func
    response = view_func(request, *args, **kwargs)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/utils/decorators.py", line 58, in bound_func
    return func.__get__(self, type(self))(*args2, **kwargs2)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/contrib/auth/views.py", line 66, in dispatch
    return super().dispatch(request, *args, **kwargs)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/views/generic/base.py", line 89, in dispatch
    return handler(request, *args, **kwargs)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/views/generic/edit.py", line 141, in post
    if form.is_valid():
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/forms/forms.py", line 179, in is_valid
    return self.is_bound and not self.errors
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/forms/forms.py", line 174, in errors
    self.full_clean()
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/forms/forms.py", line 377, in full_clean
    self._clean_form()
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/forms/forms.py", line 404, in _clean_form
    cleaned_data = self.clean()
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/contrib/auth/forms.py", line 195, in clean
    self.user_cache = authenticate(self.request, username=username, password=password)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/contrib/auth/__init__.py", line 70, in authenticate
    user = _authenticate_with_backend(backend, backend_path, request, credentials)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/contrib/auth/__init__.py", line 116, in _authenticate_with_backend
    return backend.authenticate(*args, **credentials)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/contrib/auth/backends.py", line 22, in authenticate
    if user.check_password(password) and self.user_can_authenticate(user):
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/contrib/auth/base_user.py", line 111, in check_password
    return check_password(raw_password, self.password, setter)
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/contrib/auth/hashers.py", line 42, in check_password
    if password is None or not is_password_usable(encoded):
  File "/home/fractaluser/dev_eugenie/venv_eugenie/lib/python3.6/site-packages/django/contrib/auth/hashers.py", line 25, in is_password_usable
    if encoded is None or encoded.startswith(UNUSABLE_PASSWORD_PREFIX):
AttributeError: 'int' object has no attribute 'startswith'

This is very unusual (I understand what the error means) and I am not able to understand what is causing it or how I can fix it.

Answer 1

Were there other changes as well? I am not able to replicate this issue, if I change the create_superuser function to what you have posted, I can't even create a superuser. It just fails because the username is still being passed in, which is unexpected.

But if you did happen to get this to run, it looks like the password argument might be None which is causing the set_password function to call set_unusable_password according to the documentation.

However, to dig down to what the problem actually is more information would be needed.