pip install djangorestframework
pip install djangorestframework-simplejwt

INSTALLED_APPS = [
    ...
    'rest_framework',
    'rest_framework_simplejwt',
    'rest_framework_simplejwt.token_blacklist',
    ...
]

REST_FRAMEWORK = {
    'DEFAULT_AUTHENTICATION_CLASSES': (
        'rest_framework_simplejwt.authentication.JWTAuthentication',
    ),
    'DEFAULT_PERMISSION_CLASSES': (
        'rest_framework.permissions.IsAuthenticated',
    ),
}

from datetime import timedelta

SIMPLE_JWT = {
    'ACCESS_TOKEN_LIFETIME': timedelta(minutes=5),
    'REFRESH_TOKEN_LIFETIME': timedelta(days=1),
    'ROTATE_REFRESH_TOKENS': True,
    'BLACKLIST_AFTER_ROTATION': True,
    'ALGORITHM': 'HS256',
    'SIGNING_KEY': SECRET_KEY,
    'VERIFYING_KEY': None,
    'AUTH_HEADER_TYPES': ('Bearer',),
    'USER_ID_FIELD': 'id',
    'USER_ID_CLAIM': 'user_id',
    'AUTH_TOKEN_CLASSES': ('rest_framework_simplejwt.tokens.AccessToken',),
    'TOKEN_TYPE_CLAIM': 'token_type',
}

# views.py
from rest_framework_simplejwt.views import TokenObtainPairView, TokenRefreshView, TokenBlacklistView
from rest_framework_simplejwt.serializers import TokenObtainPairSerializer
from rest_framework import status
from rest_framework.response import Response
from rest_framework.views import APIView
from django.contrib.auth.models import User
from .serializers import RegisterSerializer

class MyTokenObtainPairSerializer(TokenObtainPairSerializer):
    @classmethod
    def get_token(cls, user):
        token = super().get_token(user)
        # Add custom claims
        token['username'] = user.username
        return token

class MyTokenObtainPairView(TokenObtainPairView):
    serializer_class = MyTokenObtainPairSerializer

class RegisterView(APIView):
    def post(self, request, *args, **kwargs):
        serializer = RegisterSerializer(data=request.data)
        if serializer.is_valid():
            user = serializer.save()
            return Response({
                "user": UserSerializer(user, context=self.get_serializer_context()).data,
                "message": "User Created Successfully.  Now perform Login to get your token",
            })
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

# serializers.py
from rest_framework import serializers
from django.contrib.auth.models import User

class RegisterSerializer(serializers.ModelSerializer):
    class Meta:
        model = User
        fields = ('username', 'password', 'email')
        extra_kwargs = {'password': {'write_only': True}}

    def create(self, validated_data):
        user = User.objects.create_user(
            username=validated_data['username'],
            email=validated_data['email'],
            password=validated_data['password']
        )
        return user

class UserSerializer(serializers.ModelSerializer):
    class Meta:
        model = User
        fields = ('id', 'username', 'email')

# urls.py
from django.urls import path
from .views import MyTokenObtainPairView, RegisterView

urlpatterns = [
    path('login/', MyTokenObtainPairView.as_view(), name='token_obtain_pair'),
    path('login/refresh/', TokenRefreshView.as_view(), name='token_refresh'),
    path('logout/', TokenBlacklistView.as_view(), name='token_blacklist'),
    path('register/', RegisterView.as_view(), name='auth_register'),
]

{
  "username": "testuser",
  "email": "testuser@example.com",
  "password": "testpassword"
}

{
  "username": "testuser",
  "password": "testpassword"
}

{
  "refresh": "your_refresh_token"
}

{
  "refresh": "your_refresh_token"
}