WrappedAttributeError 'IsAdminUser' object has no attribute 'authenticate'

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0
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I'm using Django Rest Framework with permission_classes to create an API. My understanding is that once I go to that API with an unauthenticated user I should be redirected to the login form, right? Instead, I get the following error:

WrappedAttributeError at /sessions/api/listPatients/ 'IsAdminUser' object has no attribute 'authenticate'

There's no redirect to the login form... and I don't understand why.

Why is this happening? What am I doing wrong? How to fix that?

Here's the urls.py:

path('api/getSessions/',

     views.GetSessions.as_view(),

     name="GetSessionsAPI"),

And here's the view that I'm trying to go to:

class GetSessions(generics.ListCreateAPIView):

    permission_classes = (permissions.IsAuthenticated,)

    serializer_class = SessionSerializer



    def get_queryset(self):

        if self.request.user.is_authenticated:

            return Session.objects.filter(

                patient__created_by_user=self.request.user)

        else:

            raise PermissionDenied

and here's the other one raising the error:

class ListPatients(generics.ListAPIView):



    permission_classes = (permissions.IsAuthenticated,)

    serializer_class = PatientsSerializer



    def get_queryset(self):

        if self.request.user.is_authenticated:

            try:

                return Patient.objects.filter(

                    created_by_user=self.request.user).

                   filter(curently_active=True)

            except Patient.DoesNotExist:

                raise PermissionDenied

    else:

        raise PermissionDenied

Here's the full traceback:

WrappedAttributeError at /sessions/api/listPatients/

'IsAdminUser' object has no attribute 'authenticate'

Request Method: GET

Request URL:    http://localhost:8000/sessions/api/listPatients/

Django Version: 2.0.5

Exception Type: WrappedAttributeError

Exception Value:    

'IsAdminUser' object has no attribute 'authenticate'

Exception Location: /Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in _authenticate, line 375

Python Executable:  /Users/karol/Development/ZS_2_0/ZS_2_0_venv/bin/python

Python Version: 3.6.4

Python Path:    

['/Users/karol/Development/ZS_2_0/zapiszsesje_2_0',

 '/Users/karol/Development/ZS_2_0',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/patient',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/services',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/notes',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/practice',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/activity_logger',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/session',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/my_calendar',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/session/tests',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/zapiszsesje_2_0/users',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/zapiszsesje_2_0',

 '/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python36.zip',

 '/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6',

 '/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/lib-dynload',

 '/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6',

 '/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages',

 '/Applications/PyCharm.app/Contents/helpers/pycharm_matplotlib_backend',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/zapiszsesje_2_0',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/zapiszsesje_2_0']

Server time:    Sat, 17 Nov 2018 15:29:56 +0100

Traceback Switch to copy-and-paste view



/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in wrap_attributeerrors

        yield ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in user

                self._authenticate() ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in _authenticate

                user_auth_tuple = authenticator.authenticate(self) ...

▶ Local vars

During handling of the above exception ('IsAdminUser' object has no attribute 'authenticate'), another exception occurred:

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/core/handlers/exception.py in inner

            response = get_response(request) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/core/handlers/base.py in _get_response

                response = self.process_exception_by_middleware(e, request) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/core/handlers/base.py in _get_response

                response = wrapped_callback(request, *callback_args, **callback_kwargs) ...

▶ Local vars

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/contextlib.py in inner

                return func(*args, **kwds) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/views/decorators/csrf.py in wrapped_view

        return view_func(*args, **kwargs) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/views/generic/base.py in view

            return self.dispatch(request, *args, **kwargs) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in dispatch

            response = self.handle_exception(exc) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in handle_exception

            self.raise_uncaught_exception(exc) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in dispatch

            self.initial(request, *args, **kwargs) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in initial

        self.perform_authentication(request) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in perform_authentication

        request.user ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in user

                self._authenticate() ...

▶ Local vars

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/contextlib.py in __exit__

                self.gen.throw(type, value, traceback) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in wrap_attributeerrors

        six.reraise(type(exc), exc, info[2]) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/utils/six.py in reraise

            raise value.with_traceback(tb) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in wrap_attributeerrors

        yield ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in user

                self._authenticate() ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in _authenticate

                user_auth_tuple = authenticator.authenticate(self) ...

▶ Local vars

UPDATE:
This error goes away when I change the following line in my base.py settings file:

REST_FRAMEWORK = {

    'DEFAULT_AUTHENTICATION_CLASSES': (

        'rest_framework.authentication.BasicAuthentication',

        'rest_framework.authentication.SessionAuthentication',

        'rest_framework.permissions.IsAdminUser', # <- commenting out solves the problem!

    ),

However, the line has been added following the book Two Scoops of Django ...

edited Nov 17 at 14:53

asked Nov 17 at 14:19

user1544500

65611022

2

Looks like error occures in another view: /sessions/api/listPatients/. Can you show it also?
– neverwalkaloner
Nov 17 at 14:21

@neverwalkaloner - yes - that must be it, but I don't see what ... Added like you suggested. Any hints?
– user1544500
Nov 17 at 14:28

Can you add full traceback?
– neverwalkaloner
Nov 17 at 14:30

@neverwalkaloner - added.
– user1544500
Nov 17 at 14:33

1

You're certainly misreading the book. Authentication is not the same as permissions.
– Daniel Roseman
Nov 17 at 15:06

|
show 3 more comments

up vote
0
down vote

favorite

WrappedAttributeError at /sessions/api/listPatients/ 'IsAdminUser' object has no attribute 'authenticate'

There's no redirect to the login form... and I don't understand why.

Why is this happening? What am I doing wrong? How to fix that?

Here's the urls.py:

path('api/getSessions/',

     views.GetSessions.as_view(),

     name="GetSessionsAPI"),

And here's the view that I'm trying to go to:

class GetSessions(generics.ListCreateAPIView):

    permission_classes = (permissions.IsAuthenticated,)

    serializer_class = SessionSerializer



    def get_queryset(self):

        if self.request.user.is_authenticated:

            return Session.objects.filter(

                patient__created_by_user=self.request.user)

        else:

            raise PermissionDenied

and here's the other one raising the error:

class ListPatients(generics.ListAPIView):



    permission_classes = (permissions.IsAuthenticated,)

    serializer_class = PatientsSerializer



    def get_queryset(self):

        if self.request.user.is_authenticated:

            try:

                return Patient.objects.filter(

                    created_by_user=self.request.user).

                   filter(curently_active=True)

            except Patient.DoesNotExist:

                raise PermissionDenied

    else:

        raise PermissionDenied

Here's the full traceback:

WrappedAttributeError at /sessions/api/listPatients/

'IsAdminUser' object has no attribute 'authenticate'

Request Method: GET

Request URL:    http://localhost:8000/sessions/api/listPatients/

Django Version: 2.0.5

Exception Type: WrappedAttributeError

Exception Value:    

'IsAdminUser' object has no attribute 'authenticate'

Exception Location: /Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in _authenticate, line 375

Python Executable:  /Users/karol/Development/ZS_2_0/ZS_2_0_venv/bin/python

Python Version: 3.6.4

Python Path:    

['/Users/karol/Development/ZS_2_0/zapiszsesje_2_0',

 '/Users/karol/Development/ZS_2_0',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/patient',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/services',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/notes',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/practice',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/activity_logger',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/session',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/my_calendar',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/session/tests',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/zapiszsesje_2_0/users',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/zapiszsesje_2_0',

 '/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python36.zip',

 '/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6',

 '/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/lib-dynload',

 '/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6',

 '/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages',

 '/Applications/PyCharm.app/Contents/helpers/pycharm_matplotlib_backend',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/zapiszsesje_2_0',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/zapiszsesje_2_0']

Server time:    Sat, 17 Nov 2018 15:29:56 +0100

Traceback Switch to copy-and-paste view



/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in wrap_attributeerrors

        yield ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in user

                self._authenticate() ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in _authenticate

                user_auth_tuple = authenticator.authenticate(self) ...

▶ Local vars

During handling of the above exception ('IsAdminUser' object has no attribute 'authenticate'), another exception occurred:

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/core/handlers/exception.py in inner

            response = get_response(request) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/core/handlers/base.py in _get_response

                response = self.process_exception_by_middleware(e, request) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/core/handlers/base.py in _get_response

                response = wrapped_callback(request, *callback_args, **callback_kwargs) ...

▶ Local vars

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/contextlib.py in inner

                return func(*args, **kwds) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/views/decorators/csrf.py in wrapped_view

        return view_func(*args, **kwargs) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/views/generic/base.py in view

            return self.dispatch(request, *args, **kwargs) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in dispatch

            response = self.handle_exception(exc) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in handle_exception

            self.raise_uncaught_exception(exc) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in dispatch

            self.initial(request, *args, **kwargs) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in initial

        self.perform_authentication(request) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in perform_authentication

        request.user ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in user

                self._authenticate() ...

▶ Local vars

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/contextlib.py in __exit__

                self.gen.throw(type, value, traceback) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in wrap_attributeerrors

        six.reraise(type(exc), exc, info[2]) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/utils/six.py in reraise

            raise value.with_traceback(tb) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in wrap_attributeerrors

        yield ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in user

                self._authenticate() ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in _authenticate

                user_auth_tuple = authenticator.authenticate(self) ...

▶ Local vars

UPDATE:
This error goes away when I change the following line in my base.py settings file:

REST_FRAMEWORK = {

    'DEFAULT_AUTHENTICATION_CLASSES': (

        'rest_framework.authentication.BasicAuthentication',

        'rest_framework.authentication.SessionAuthentication',

        'rest_framework.permissions.IsAdminUser', # <- commenting out solves the problem!

    ),

However, the line has been added following the book Two Scoops of Django ...

edited Nov 17 at 14:53

asked Nov 17 at 14:19

user1544500

65611022

2

Looks like error occures in another view: /sessions/api/listPatients/. Can you show it also?
– neverwalkaloner
Nov 17 at 14:21

@neverwalkaloner - yes - that must be it, but I don't see what ... Added like you suggested. Any hints?
– user1544500
Nov 17 at 14:28

Can you add full traceback?
– neverwalkaloner
Nov 17 at 14:30

@neverwalkaloner - added.
– user1544500
Nov 17 at 14:33

1

You're certainly misreading the book. Authentication is not the same as permissions.
– Daniel Roseman
Nov 17 at 15:06

|
show 3 more comments

up vote
0
down vote

favorite

WrappedAttributeError at /sessions/api/listPatients/ 'IsAdminUser' object has no attribute 'authenticate'

There's no redirect to the login form... and I don't understand why.

Why is this happening? What am I doing wrong? How to fix that?

Here's the urls.py:

path('api/getSessions/',

     views.GetSessions.as_view(),

     name="GetSessionsAPI"),

And here's the view that I'm trying to go to:

class GetSessions(generics.ListCreateAPIView):

    permission_classes = (permissions.IsAuthenticated,)

    serializer_class = SessionSerializer



    def get_queryset(self):

        if self.request.user.is_authenticated:

            return Session.objects.filter(

                patient__created_by_user=self.request.user)

        else:

            raise PermissionDenied

and here's the other one raising the error:

class ListPatients(generics.ListAPIView):



    permission_classes = (permissions.IsAuthenticated,)

    serializer_class = PatientsSerializer



    def get_queryset(self):

        if self.request.user.is_authenticated:

            try:

                return Patient.objects.filter(

                    created_by_user=self.request.user).

                   filter(curently_active=True)

            except Patient.DoesNotExist:

                raise PermissionDenied

    else:

        raise PermissionDenied

Here's the full traceback:

WrappedAttributeError at /sessions/api/listPatients/

'IsAdminUser' object has no attribute 'authenticate'

Request Method: GET

Request URL:    http://localhost:8000/sessions/api/listPatients/

Django Version: 2.0.5

Exception Type: WrappedAttributeError

Exception Value:    

'IsAdminUser' object has no attribute 'authenticate'

Exception Location: /Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in _authenticate, line 375

Python Executable:  /Users/karol/Development/ZS_2_0/ZS_2_0_venv/bin/python

Python Version: 3.6.4

Python Path:    

['/Users/karol/Development/ZS_2_0/zapiszsesje_2_0',

 '/Users/karol/Development/ZS_2_0',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/patient',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/services',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/notes',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/practice',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/activity_logger',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/session',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/my_calendar',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/session/tests',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/zapiszsesje_2_0/users',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/zapiszsesje_2_0',

 '/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python36.zip',

 '/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6',

 '/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/lib-dynload',

 '/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6',

 '/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages',

 '/Applications/PyCharm.app/Contents/helpers/pycharm_matplotlib_backend',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/zapiszsesje_2_0',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/zapiszsesje_2_0']

Server time:    Sat, 17 Nov 2018 15:29:56 +0100

Traceback Switch to copy-and-paste view



/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in wrap_attributeerrors

        yield ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in user

                self._authenticate() ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in _authenticate

                user_auth_tuple = authenticator.authenticate(self) ...

▶ Local vars

During handling of the above exception ('IsAdminUser' object has no attribute 'authenticate'), another exception occurred:

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/core/handlers/exception.py in inner

            response = get_response(request) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/core/handlers/base.py in _get_response

                response = self.process_exception_by_middleware(e, request) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/core/handlers/base.py in _get_response

                response = wrapped_callback(request, *callback_args, **callback_kwargs) ...

▶ Local vars

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/contextlib.py in inner

                return func(*args, **kwds) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/views/decorators/csrf.py in wrapped_view

        return view_func(*args, **kwargs) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/views/generic/base.py in view

            return self.dispatch(request, *args, **kwargs) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in dispatch

            response = self.handle_exception(exc) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in handle_exception

            self.raise_uncaught_exception(exc) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in dispatch

            self.initial(request, *args, **kwargs) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in initial

        self.perform_authentication(request) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in perform_authentication

        request.user ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in user

                self._authenticate() ...

▶ Local vars

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/contextlib.py in __exit__

                self.gen.throw(type, value, traceback) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in wrap_attributeerrors

        six.reraise(type(exc), exc, info[2]) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/utils/six.py in reraise

            raise value.with_traceback(tb) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in wrap_attributeerrors

        yield ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in user

                self._authenticate() ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in _authenticate

                user_auth_tuple = authenticator.authenticate(self) ...

▶ Local vars

UPDATE:
This error goes away when I change the following line in my base.py settings file:

REST_FRAMEWORK = {

    'DEFAULT_AUTHENTICATION_CLASSES': (

        'rest_framework.authentication.BasicAuthentication',

        'rest_framework.authentication.SessionAuthentication',

        'rest_framework.permissions.IsAdminUser', # <- commenting out solves the problem!

    ),

However, the line has been added following the book Two Scoops of Django ...

edited Nov 17 at 14:53

asked Nov 17 at 14:19

user1544500

65611022

WrappedAttributeError at /sessions/api/listPatients/ 'IsAdminUser' object has no attribute 'authenticate'

There's no redirect to the login form... and I don't understand why.

Why is this happening? What am I doing wrong? How to fix that?

Here's the urls.py:

path('api/getSessions/',

     views.GetSessions.as_view(),

     name="GetSessionsAPI"),

And here's the view that I'm trying to go to:

class GetSessions(generics.ListCreateAPIView):

    permission_classes = (permissions.IsAuthenticated,)

    serializer_class = SessionSerializer



    def get_queryset(self):

        if self.request.user.is_authenticated:

            return Session.objects.filter(

                patient__created_by_user=self.request.user)

        else:

            raise PermissionDenied

and here's the other one raising the error:

class ListPatients(generics.ListAPIView):



    permission_classes = (permissions.IsAuthenticated,)

    serializer_class = PatientsSerializer



    def get_queryset(self):

        if self.request.user.is_authenticated:

            try:

                return Patient.objects.filter(

                    created_by_user=self.request.user).

                   filter(curently_active=True)

            except Patient.DoesNotExist:

                raise PermissionDenied

    else:

        raise PermissionDenied

Here's the full traceback:

WrappedAttributeError at /sessions/api/listPatients/

'IsAdminUser' object has no attribute 'authenticate'

Request Method: GET

Request URL:    http://localhost:8000/sessions/api/listPatients/

Django Version: 2.0.5

Exception Type: WrappedAttributeError

Exception Value:    

'IsAdminUser' object has no attribute 'authenticate'

Exception Location: /Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in _authenticate, line 375

Python Executable:  /Users/karol/Development/ZS_2_0/ZS_2_0_venv/bin/python

Python Version: 3.6.4

Python Path:    

['/Users/karol/Development/ZS_2_0/zapiszsesje_2_0',

 '/Users/karol/Development/ZS_2_0',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/patient',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/services',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/notes',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/practice',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/activity_logger',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/session',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/my_calendar',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/session/tests',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/zapiszsesje_2_0/users',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/zapiszsesje_2_0',

 '/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python36.zip',

 '/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6',

 '/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/lib-dynload',

 '/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6',

 '/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages',

 '/Applications/PyCharm.app/Contents/helpers/pycharm_matplotlib_backend',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/zapiszsesje_2_0',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0',

 '/Users/karol/Development/ZS_2_0/zapiszsesje_2_0/zapiszsesje_2_0']

Server time:    Sat, 17 Nov 2018 15:29:56 +0100

Traceback Switch to copy-and-paste view



/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in wrap_attributeerrors

        yield ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in user

                self._authenticate() ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in _authenticate

                user_auth_tuple = authenticator.authenticate(self) ...

▶ Local vars

During handling of the above exception ('IsAdminUser' object has no attribute 'authenticate'), another exception occurred:

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/core/handlers/exception.py in inner

            response = get_response(request) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/core/handlers/base.py in _get_response

                response = self.process_exception_by_middleware(e, request) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/core/handlers/base.py in _get_response

                response = wrapped_callback(request, *callback_args, **callback_kwargs) ...

▶ Local vars

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/contextlib.py in inner

                return func(*args, **kwds) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/views/decorators/csrf.py in wrapped_view

        return view_func(*args, **kwargs) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/views/generic/base.py in view

            return self.dispatch(request, *args, **kwargs) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in dispatch

            response = self.handle_exception(exc) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in handle_exception

            self.raise_uncaught_exception(exc) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in dispatch

            self.initial(request, *args, **kwargs) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in initial

        self.perform_authentication(request) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/views.py in perform_authentication

        request.user ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in user

                self._authenticate() ...

▶ Local vars

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/contextlib.py in __exit__

                self.gen.throw(type, value, traceback) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in wrap_attributeerrors

        six.reraise(type(exc), exc, info[2]) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/django/utils/six.py in reraise

            raise value.with_traceback(tb) ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in wrap_attributeerrors

        yield ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in user

                self._authenticate() ...

▶ Local vars

/Users/karol/Development/ZS_2_0/ZS_2_0_venv/lib/python3.6/site-packages/rest_framework/request.py in _authenticate

                user_auth_tuple = authenticator.authenticate(self) ...

▶ Local vars

UPDATE:
This error goes away when I change the following line in my base.py settings file:

REST_FRAMEWORK = {

    'DEFAULT_AUTHENTICATION_CLASSES': (

        'rest_framework.authentication.BasicAuthentication',

        'rest_framework.authentication.SessionAuthentication',

        'rest_framework.permissions.IsAdminUser', # <- commenting out solves the problem!

    ),

However, the line has been added following the book Two Scoops of Django ...

django django-rest-framework django-authentication

edited Nov 17 at 14:53

asked Nov 17 at 14:19

user1544500

65611022

edited Nov 17 at 14:53

asked Nov 17 at 14:19

user1544500

65611022

edited Nov 17 at 14:53

asked Nov 17 at 14:19

user1544500

65611022

asked Nov 17 at 14:19

user1544500

65611022

asked Nov 17 at 14:19

user1544500

65611022

2

Looks like error occures in another view: /sessions/api/listPatients/. Can you show it also?
– neverwalkaloner
Nov 17 at 14:21

@neverwalkaloner - yes - that must be it, but I don't see what ... Added like you suggested. Any hints?
– user1544500
Nov 17 at 14:28

Can you add full traceback?
– neverwalkaloner
Nov 17 at 14:30

@neverwalkaloner - added.
– user1544500
Nov 17 at 14:33

1

You're certainly misreading the book. Authentication is not the same as permissions.
– Daniel Roseman
Nov 17 at 15:06

|
show 3 more comments

2

Looks like error occures in another view: /sessions/api/listPatients/. Can you show it also?
– neverwalkaloner
Nov 17 at 14:21

@neverwalkaloner - yes - that must be it, but I don't see what ... Added like you suggested. Any hints?
– user1544500
Nov 17 at 14:28

Can you add full traceback?
– neverwalkaloner
Nov 17 at 14:30

@neverwalkaloner - added.
– user1544500
Nov 17 at 14:33

1

You're certainly misreading the book. Authentication is not the same as permissions.
– Daniel Roseman
Nov 17 at 15:06

Looks like error occures in another view: /sessions/api/listPatients/. Can you show it also?
– neverwalkaloner
Nov 17 at 14:21

@neverwalkaloner - yes - that must be it, but I don't see what ... Added like you suggested. Any hints?
– user1544500
Nov 17 at 14:28

Can you add full traceback?
– neverwalkaloner
Nov 17 at 14:30

@neverwalkaloner - added.
– user1544500
Nov 17 at 14:33

You're certainly misreading the book. Authentication is not the same as permissions.
– Daniel Roseman
Nov 17 at 15:06

|
show 3 more comments

1 Answer
1

active

oldest

votes

up vote
0
down vote

Turned out it was my mistake which got uncovered thanks to the comments under my question:

By mistake I have added 'rest_framework.permissions.IsAdminUser', to DEFAULT_AUTHENTICATION_CLASSES instead of DEFAULT_PERMISSION_CLASSES inside my settings file.

That solved the problem - thanks! :)

answered Nov 17 at 15:15

user1544500

65611022

add a comment |

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1 Answer
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1 Answer
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Turned out it was my mistake which got uncovered thanks to the comments under my question:

By mistake I have added 'rest_framework.permissions.IsAdminUser', to DEFAULT_AUTHENTICATION_CLASSES instead of DEFAULT_PERMISSION_CLASSES inside my settings file.

That solved the problem - thanks! :)

answered Nov 17 at 15:15

user1544500

65611022

add a comment |

up vote
0
down vote

Turned out it was my mistake which got uncovered thanks to the comments under my question:

By mistake I have added 'rest_framework.permissions.IsAdminUser', to DEFAULT_AUTHENTICATION_CLASSES instead of DEFAULT_PERMISSION_CLASSES inside my settings file.

That solved the problem - thanks! :)

answered Nov 17 at 15:15

user1544500

65611022

add a comment |

up vote
0
down vote

Turned out it was my mistake which got uncovered thanks to the comments under my question:

By mistake I have added 'rest_framework.permissions.IsAdminUser', to DEFAULT_AUTHENTICATION_CLASSES instead of DEFAULT_PERMISSION_CLASSES inside my settings file.

That solved the problem - thanks! :)

answered Nov 17 at 15:15

user1544500

65611022

Turned out it was my mistake which got uncovered thanks to the comments under my question:

By mistake I have added 'rest_framework.permissions.IsAdminUser', to DEFAULT_AUTHENTICATION_CLASSES instead of DEFAULT_PERMISSION_CLASSES inside my settings file.

That solved the problem - thanks! :)

answered Nov 17 at 15:15

user1544500

65611022

answered Nov 17 at 15:15

user1544500

65611022

answered Nov 17 at 15:15

user1544500

65611022

answered Nov 17 at 15:15

user1544500

65611022

add a comment |

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