Custom authentication token for custom Users in Django Rest Framework - django-models

Question

I am very new to Django Framework, I am trying to use Custom user model and Custom authentication for my project.
please find below code for Create Custom Model and Custom authentication.
Custom User Model
class User(AbstractUser):
userID = models.AutoField(primary_key=True)
Employee = models.ForeignKey(EMP, on_delete=models.CASCADE, null=True)
User Serializer
class ValidateUserSerializer(serializers.ModelSerializer):
class Meta:
model = User
fields = ('Employee', 'first_name', 'last_name',
'email', 'username', 'password')
def create(self, validated_data):
User = get_user_model()
Employee = validated_data.pop('Employee')
first_name = validated_data.pop('first_name')
last_name = validated_data.pop('last_name')
email = validated_data.pop('email')
username = validated_data.pop('username')
password = validated_data.pop('password')
return User.objects.create(Employee =Employee ,
first_name=first_name, last_name=last_name, email=email, username=username, password=None, **validated_data)
Views.py
#api_view(['GET', 'POST'])
def users(request):
if request.method == 'GET':
users = Users.objects.all()
print(users.query)
data = UserTempSerializer(users, many=True).data
return JsonResponse(data, safe=False)
elif request.method == 'POST':
users_data = JSONParser().parse(request)
user_serilizer = ValidateUserSerializer(data=users_data)
if user_serilizer.is_valid():
user_serilizer.save()
return JsonResponse(user_serilizer.data, status=status.HTTP_201_CREATED)
print(user_serilizer.errors)
return JsonResponse(user_serilizer.errors, status=status.HTTP_400_BAD_REQUEST)
Custom authentication Code Here:
class CustomAuthToken(ObtainAuthToken):
def post(self, request, *args, **kwargs):
serializer = self.serializer_class(data=request.data,
context={'request': request})
serializer.is_valid(raise_exception=True)
user = serializer.validated_data['user']
token, created = Token.objects.get_or_create(user=user)
return Response({
'token': token.key,
'user_id': user.pk,
'first_name': user.first_name,
'email': user.email
})
I am not able to create the users and not able to authincate users.
I am getting below error try to authenticate the user:
Bad Request: /api/auth/
[06/Jul/2021 10:59:38] "POST /api/auth/ HTTP/1.1" 400 68
Could you please anybody help, Do I made wrong or flow are wrong.
Thanks in advance !!!!