Hi all,
I'm developing a Django application for Windows with Pyhton 2.7.15. I need
to implement an authentication mechanism with Django REST Framework JWT
<https://getblimp.github.io/django-rest-framework-jwt/> where I simply need
to verify a token (and not to generate it). The token's payload is
something like this:
{
"iss": "customIssuer",
"username": "customUser"
}
For this reason, I configure my setting.py in this way:
...
REST_FRAMEWORK = {
'DEFAULT_PERMISSION_CLASSES': (
'rest_framework.permissions.IsAuthenticated',
),
'DEFAULT_AUTHENTICATION_CLASSES': (
'rest_framework_jwt.authentication.JSONWebTokenAuthentication',
'rest_framework.authentication.TokenAuthentication'
),
}
JWT_AUTH = {
'JWT_ISSUER': 'customIssuer'
}
...
and my urls.py in this way:
...
from rest_framework_jwt.views import verify_jwt_token
urlpatterns = [
...
url(r'^api-token-verify/', verify_jwt_token),
...
]
Then, if I try to send a POST request with the above token, I get this
error:
Traceback (most recent call last):
File
"C:\Software\Workspace\py2_env\lib\site-packages\django\core\handlers\exception.py"
, line 41, in inner
response = get_response(request)
File
"C:\Software\Workspace\py2_env\lib\site-packages\django\core\handlers\base.py"
, line 187, in _get_response
response = self.process_exception_by_middleware(e, request)
File
"C:\Software\Workspace\py2_env\lib\site-packages\django\core\handlers\base.py"
, line 185, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File
"C:\Software\Workspace\py2_env\lib\site-packages\django\views\decorators\csrf.py"
, line 58, in wrapped_view
return view_func(*args, **kwargs)
File
"C:\Software\Workspace\py2_env\lib\site-packages\django\views\generic\base.py"
, line 68, in view
return self.dispatch(request, *args, **kwargs)
File
"C:\Software\Workspace\py2_env\lib\site-packages\rest_framework\views.py",
line 489, in dispatch
response = self.handle_exception(exc)
File
"C:\Software\Workspace\py2_env\lib\site-packages\rest_framework\views.py",
line 449, in handle_exception
self.raise_uncaught_exception(exc)
File
"C:\Software\Workspace\py2_env\lib\site-packages\rest_framework\views.py",
line 486, in dispatch
response = handler(request, *args, **kwargs)
File
"C:\Software\Workspace\py2_env\lib\site-packages\rest_framework_jwt\views.py"
, line 57, in post
if serializer.is_valid():
File
"C:\Software\Workspace\py2_env\lib\site-packages\rest_framework\serializers.py"
, line 237, in is_valid
self._validated_data = self.run_validation(self.initial_data)
File
"C:\Software\Workspace\py2_env\lib\site-packages\rest_framework\serializers.py"
, line 435, in run_validation
value = self.validate(value)
File
"C:\Software\Workspace\py2_env\lib\site-packages\rest_framework_jwt\serializers.py"
, line 130, in validate
user = self._check_user(payload=payload)
File
"C:\Software\Workspace\py2_env\lib\site-packages\rest_framework_jwt\serializers.py"
, line 109, in _check_user
user = User.objects.get_by_natural_key(username)
File
"C:\Software\Workspace\py2_env\lib\site-packages\django\contrib\auth\base_user.py"
, line 48, in get_by_natural_key
return self.get(**{self.model.USERNAME_FIELD: username})
File
"C:\Software\Workspace\py2_env\lib\site-packages\django\db\models\manager.py"
, line 85, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File
"C:\Software\Workspace\py2_env\lib\site-packages\django\db\models\query.py",
line 374, in get
num = len(clone)
File
"C:\Software\Workspace\py2_env\lib\site-packages\django\db\models\query.py",
line 232, in __len__
self._fetch_all()
File
"C:\Software\Workspace\py2_env\lib\site-packages\django\db\models\query.py",
line 1105, in _fetch_all
self._result_cache = list(self._iterable_class(self))
File
"C:\Software\Workspace\py2_env\lib\site-packages\django\db\models\query.py",
line 53, in __iter__
results = compiler.execute_sql(chunked_fetch=self.chunked_fetch)
File
"C:\Software\Workspace\py2_env\lib\site-packages\django\db\models\sql\compiler.py"
, line 886, in execute_sql
raise original_exception
OperationalError: no such table: auth_user
Checking the "rest framework jwt" package, I notice that this error is
throw by serializers.py. In particular from the check_user method:
def _check_user(self, payload):
username = jwt_get_username_from_payload(payload)
if not username:
msg = _('Invalid payload.')
raise serializers.ValidationError(msg)
# Make sure user exists
try:
user = User.objects.get_by_natural_key(username) # <=========
ERROR!!!!
except User.DoesNotExist:
msg = _("User doesn't exist.")
raise serializers.ValidationError(msg)
if not user.is_active:
msg = _('User account is disabled.')
raise serializers.ValidationError(msg)
return user
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