views.py

from django.contrib.auth.models import User
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework import permissions
from django.forms.models import model_to_dict


class UserLogin(APIView):
    permission_classes = (permissions.IsAuthenticated,)
    lookup_field = 'username'

    def post(self, request, format=None):
        user_instance = User.objects.get(username=request.data.get('username'))
        user_instance = model_to_dict(user_instance)
        user_instance.pop("password")
        return Response(user_instance)