Returns already awarded user ids and the count.

def get_already_awarded_user_ids(self, db_read=None, show_log=True):
        """
        Returns already awarded user ids and the count.
        """

        db_read = db_read or self.db_read

        already_awarded_ids = self.badge.users.using(db_read).values_list('id', flat=True)
        already_awarded_ids_count = len(already_awarded_ids)

        if show_log:
            logger.debug(
                "→ Badge %s: %d users already awarded (fetched from db '%s')",
                self.slug,
                already_awarded_ids_count,
                db_read)

        return already_awarded_ids