Could not import 'rest_framework_jwt.authentication.JSONWebTokenAuthentication' for API setting 'DEFAULT_AUTHENTICATION_CLASSES'

Question

Full Error: Could not import 'rest_framework_jwt.authentication.JSONWebTokenAuthentication' for API setting 'DEFAULT_AUTHENTICATION_CLASSES'. ImportError: cannot import name 'smart_text' from 'django.utils.encoding'

REST_FRAMEWORK = {
    'DEFAULT_PERMISSION_CLASSES': (
        'rest_framework.permissions.IsAuthenticated',
    ),
    'DEFAULT_AUTHENTICATION_CLASSES': (
        
        'rest_framework.authentication.SessionAuthentication',
        'rest_framework.authentication.BasicAuthentication',
        'rest_framework_jwt.authentication.JSONWebTokenAuthentication',
    ),
}

And this is the pip freeze in the virtual env:

(backend) PS D:\js\backend> pip freeze                          
asgiref==3.5.1
Django==4.0.4
django-cors-headers==3.11.0
djangorestframework==3.13.1
djangorestframework-jwt==1.11.0
djangorestframework-simplejwt==5.1.0
mysqlclient==2.1.0
PyJWT==1.7.1
pytz==2022.1
sqlparse==0.4.2
tzdata==2022.1

in the middle of the error, it addresses some lines across views.py for decorators:

from http.client import HTTPResponse
from multiprocessing import context
from django.shortcuts import render
from django.http import HttpResponse, Http404, JsonResponse
from .models import Tweet
from rest_framework.response import Response
from rest_framework.permissions import IsAuthenticated
from rest_framework.decorators import api_view, permission_classes
from rest_framework import status

I'm not sure if they're even related

monim · Accepted Answer · 2022-09-24T20:25:02.367

'rest_framework_jwt.authentication.JSONWebTokenAuthentication' this is provided by djangorestframework-jwt wich is not not being maintained anymore . Just uninstall it instead use 'rest_framework_simplejwt.authentication.JWTAuthentication' that comes from djangorestframework-simplejwt

1 - install djangorestframework-simplejwt : pip install djangorestframework-simplejwt

2- Your 'DEFAULT_AUTHENTICATION_CLASSES' should be like this :

'DEFAULT_AUTHENTICATION_CLASSES': (
    
    'rest_framework.authentication.SessionAuthentication',
    'rest_framework.authentication.BasicAuthentication',
    'rest_framework_simplejwt.authentication.JWTAuthentication', 
),

3 - in your root urls.py file (or any other url config), include routes for Simple JWT’s TokenObtainPairView and TokenRefreshView views:

from rest_framework_simplejwt.views import (
    TokenObtainPairView,
    TokenRefreshView,
)

urlpatterns = [
    ...
    path('api/token/', TokenObtainPairView.as_view(), name='token_obtain_pair'),
    path('api/token/refresh/', TokenRefreshView.as_view(), name='token_refresh'),
    ...
]

for more information check the official documentation

In case anyone else is doing this. its not just as simple as replacing the authentication class. you will have to update your urls for logging in/out/etc as well as any front end pieces that touch those new urls (unless you keep the paths the same) — jAC, Sep 18 '22 at 14:51

score 0 · Answer 2 · answered Jun 01 '23 at 08:05

You can override the deprecated parts to use wide spread features in rest_framework_jwt which is not implemented in djangorestframework-simplejwt library.

Specify the authenticator classes to your own path in the settings.py just like this:

REST_FRAMEWORK = {
    'DEFAULT_PERMISSION_CLASSES': (
        'rest_framework.permissions.IsAuthenticated',
    ),
    'DEFAULT_AUTHENTICATION_CLASSES': (
        'YOUR_AUTH_APP.classes.CustomJSONWebTokenAuthentication',
        'rest_framework.authentication.SessionAuthentication',
        'rest_framework.authentication.BasicAuthentication',
    ),
}

and create a classes.py in YOUR_AUTH_APP to fix the imports:

import django
from django.utils.encoding import smart_str
from django.utils.translation import gettext

django.utils.encoding.smart_text = smart_str # fix deprecated import
django.utils.translation.ugettext = gettext # fix deprecated import
from rest_framework_jwt.authentication import JSONWebTokenAuthentication  # noqa


class CustomJSONWebTokenAuthentication(JSONWebTokenAuthentication):
    def authenticate(self, request):
        tuple_response = super(CustomJSONWebTokenAuthentication, self).authenticate(request)
        return tuple_response

    def authenticate_credentials(self, payload):
        user = super(CustomJSONWebTokenAuthentication, self).authenticate_credentials(payload)
        return user

Could not import 'rest_framework_jwt.authentication.JSONWebTokenAuthentication' for API setting 'DEFAULT_AUTHENTICATION_CLASSES'

2 Answers2