'Log that an object has been successfully changed.
The default implementation creates an admin LogEntry object.'

def log_change(self, request, object, message):

    from django.contrib.admin.models import LogEntry, CHANGE
    LogEntry.objects.log_action(user_id=request.user.pk, content_type_id=ContentType.objects.get_for_model(object).pk, object_id=object.pk, object_repr=force_unicode(object), action_flag=CHANGE, change_message=message)
