Integrate django-rest-knox with django-rest-auth

serializers.py

from rest_framework import serializers

from rest_auth.serializers import UserDetailsSerializer


class KnoxSerializer(serializers.Serializer):
    """
    Serializer for Knox authentication.
    """
    token = serializers.CharField()
    user = UserDetailsSerializer()

settings.py

AUTHENTICATION_BACKENDS = (
    'django.contrib.auth.backends.ModelBackend',
    'allauth.account.auth_backends.AuthenticationBackend',
)

REST_FRAMEWORK = {
    'DEFAULT_AUTHENTICATION_CLASSES': ('knox.auth.TokenAuthentication',),
    'DEFAULT_PERMISSION_CLASSES': (
        'rest_framework.permissions.IsAuthenticated',
    ),
    'DEFAULT_FILTER_BACKENDS': (
        'django_filters.rest_framework.DjangoFilterBackend',
    ),
}

REST_AUTH_TOKEN_MODEL = 'knox.models.AuthToken'
REST_AUTH_TOKEN_CREATOR = 'project.apps.accounts.utils.create_knox_token'

REST_AUTH_SERIALIZERS = {
    'USER_DETAILS_SERIALIZER': 'project.apps.accounts.serializers.UserDetailsSerializer',
    'TOKEN_SERIALIZER': 'project.apps.accounts.serializers.KnoxSerializer',
}

utils.py

from knox.models import AuthToken


def create_knox_token(token_model, user, serializer):
    token = AuthToken.objects.create(user=user)
    return token

views.py

from rest_framework.response import Response

from rest_auth.views import LoginView
from rest_auth.registration.views import RegisterView

from allauth.account.utils import complete_signup
from allauth.account import app_settings as allauth_settings

from .serializers import KnoxSerializer
from .utils import create_knox_token


class KnoxLoginView(LoginView):

    def get_response(self):
        serializer_class = self.get_response_serializer()

        data = {
            'user': self.user,
            'token': self.token
        }
        serializer = serializer_class(instance=data, context={'request': self.request})

        return Response(serializer.data, status=200)


class KnoxRegisterView(RegisterView):

    def get_response_data(self, user):
        return KnoxSerializer({'user': user, 'token': self.token}).data

    def perform_create(self, serializer):
        user = serializer.save(self.request)
        self.token = create_knox_token(None, user, None)
        complete_signup(self.request._request, user, allauth_settings.EMAIL_VERIFICATION, None)
        return user

This is brilliant! Thanks.

One question,

I'm using dj-rest-auth, an extension of django-rest-auth, and I've tried to integrate django-rest-knox with it in your code.

I then POST the API to try and register with the URL http://127.0.0.1:8000/dj-rest-auth/registration/ and the result was that the token was stored in the AuthToken model and at the same time the User model (which is not the Django standard but, CustomUserModel. ) has also saved the user's record .

However, an

"AttributeError at /dj-rest-auth/registration/
'CustomUser' object has no attribute 'auth_token'" 

error.

I thought it was because the User model does not have an auth_token field, so I tried to migrate it again.

But as a result I get the error
"users.CustomUser.auth_token: (models.E006) The field 'auth_token' clashes with the field 'auth_token' "
from model 'users.customuser'.

I can't figure out why I'm getting an

"AttributeError at /dj-rest-auth/registration/
'CustomUser' object has no attribute 'auth_token'"

errorr .

Could you please advise me on how to resolve this?
I can attach the code such as models.py separately if needed.

I'm Japanese, I'm not very good at English and I don't have much programming experience.
Feel free to tell me if there is something difficult to understand in your question.

make sure that you have the correct urlpattern order and that you have added the KnoxLoginView in the urlpattern. I changed the urlpattern to the following:

urlpatterns = [
    path('login/', KnoxLoginView.as_view(), name='knox_login'),
    path('knox/', include('knox.urls')), #for logout
    path('registration/', KnoxRegisterView.as_view(), name='knox_register'),
    path('', include('dj_rest_auth.urls')),
    path('facebook/', FacebookLogin.as_view(), name='fb_login')
]

Hope this helps!

P.S.: make sure that you change your code to what it was when you got the attribute error..

Love this and it's working fine except for one thing. After logging in, the expiry date is not included in the response.

urls.py

path('api/v1/', include("api.urls")),
path('api/v1/login/', KnoxLoginView.as_view(), name='knox_login'),
path('api-auth/', include('rest_framework.urls')),
path('api/v1/dj-rest-auth/', include('dj_rest_auth.urls')),

views.py

from dj_rest_auth.views import LoginView

class KnoxLoginView(LoginView):
    
    def get_response(self):
        serializer_class = self.get_response_serializer()
        print(self)
        data = {
            'user': self.user,
            'token': self.token
        }
        serializer = serializer_class(instance=data, context={'request': self.request})

        return Response(serializer.data, status=200)

settings.py

REST_FRAMEWORK = {
    'DEFAULT_FILTER_BACKENDS': (
        'django_filters.rest_framework.DjangoFilterBackend',
    ),
    'DEFAULT_PERMISSION_CLASSES': [
        'rest_framework.permissions.IsAuthenticated',
    ],
    'DEFAULT_AUTHENTICATION_CLASSES': ('knox.auth.TokenAuthentication',),
    'DEFAULT_SCHEMA_CLASS': 'drf_spectacular.openapi.AutoSchema',
}

REST_AUTH_TOKEN_MODEL = 'knox.models.AuthToken'
REST_AUTH_TOKEN_CREATOR = 'api.utils.create_knox_token'

REST_AUTH_SERIALIZERS = {
    'USER_DETAILS_SERIALIZER': 'api.serializers.UserDetailsSerializer',
    'TOKEN_SERIALIZER': 'api.serializers.KnoxSerializer',
}
from rest_framework.settings import api_settings
REST_KNOX = {
  'TOKEN_TTL': timedelta(minutes=1),
  'TOKEN_LIMIT_PER_USER': None,
  'AUTO_REFRESH': False,
  'EXPIRY_DATETIME_FORMAT': api_settings.DATETIME_FORMAT
}

api.utils

from knox.models import AuthToken

def create_knox_token(token_model, user, serializer):
    token = AuthToken.objects.create(user=user)
    return token

This is brilliant! Thanks.

One question,

I'm using dj-rest-auth, an extension of django-rest-auth, and I've tried to integrate django-rest-knox with it in your code.

I then POST the API to try and register with the URL http://127.0.0.1:8000/dj-rest-auth/registration/ and the result was that the token was stored in the AuthToken model and at the same time the User model (which is not the Django standard but, CustomUserModel. ) has also saved the user's record .

However, an

"AttributeError at /dj-rest-auth/registration/
'CustomUser' object has no attribute 'auth_token'" 

error.

I thought it was because the User model does not have an auth_token field, so I tried to migrate it again.

But as a result I get the error "users.CustomUser.auth_token: (models.E006) The field 'auth_token' clashes with the field 'auth_token' " from model 'users.customuser'.

I can't figure out why I'm getting an

"AttributeError at /dj-rest-auth/registration/
'CustomUser' object has no attribute 'auth_token'"

errorr .

Could you please advise me on how to resolve this? I can attach the code such as models.py separately if needed.

I'm Japanese, I'm not very good at English and I don't have much programming experience. Feel free to tell me if there is something difficult to understand in your question.

Main reason behind this is that,
When you are using dj_rest_auth registration method
In RegisterView there is method called get_response_data(self, user) which
return TokenSerializer(user.auth_token, context=self.get_serializer_context()).data

Here user.auth_token is main cause of errors raises
when you look on AuthToken in knox.models ,you found
user = models.ForeignKey(User, null=False, blank=False,
related_name='auth_token_set', on_delete=models.CASCADE)
whose related_name is auth_token_set not auth_token

Solution for this is,
1.Try to use custom register view as mention above
or change the auth_token to auth_token_set by overriding the
get_response_data(self, user) method of dj_rest_auth.registration.views.registerview

Hope you got it..