last_login field is not updated when authenticating using Tokenauthentication in Django Rest Framework

Well, at the end I inherited from the REST Framework TokenAuthentication, pointing to it in the urls file

url(r'^api-token-auth/', back_views.TokenAuthenticationView.as_view()),

and the View handles the request and manually calls the update_last_login like this:

from django.contrib.auth.models import update_last_login

class TokenAuthenticationView(ObtainAuthToken):
    """Implementation of ObtainAuthToken with last_login update"""

    def post(self, request):
        result = super(TokenAuthenticationView, self).post(request)
        try:
            request_user, data = requests.get_parameters(request)
            user = requests.get_user_by_username(data['username'])
            update_last_login(None, user)            
        except Exception as exc:
            return None
        return result