class UserList(generics.ListCreateAPIView):
        """
        ListAPI view for get list of Users and create User instance
        """
        queryset = UserProfile.objects.all()
        model = UserProfile
        serializer_class = UserSerializer
        paginate_by = 10
        permission_classes = (IsAuthenticated, IsAdminUser,)

        def get_queryset(self):
            """
            Method to get query params and return search results for User
            :return: Search Result
            """
            queryset = UserProfile.objects.all()
            search_query = self.request.query_params.get('user', None)

            if search_query is not None:
                queryset = queryset.filter(username__istartswith=search_query)
            queryset = queryset.order_by('username')
            return queryset


    class UserDetail(generics.RetrieveUpdateAPIView):
        """
        Class based API view to Retrieve, Update a User instance
        """
        queryset = UserProfile.objects.all()
        model = UserProfile
        serializer_class = UserSerializer
        permission_classes = (IsAuthenticated, UserIsOwnerOrAdmin,)


    class UserDelete(generics.DestroyAPIView):

        queryset = UserProfile.objects.all()
        model = UserProfile
        serializer_class = UserSerializer
        permission_classes = (IsAuthenticated, IsAdminUser,)