def get(self, id, pk='id', deleted=False):
        try:
            if pk == 'id':
                id = int(id)
            if deleted:
                spec = {pk: id}
            else:
                spec = {pk: id, 'data': {'$exists': 1}}
            fields = {'_id': 0}
            row = self.db.docs.find_one(spec, fields)
        except Exception as e:
            raise DatabaseException(e)
        if row:
            return Document(**row)
        raise NotFoundError('%s %s not found' % (pk, id))
def get_initial_verification(cls, user, earliest_allowed_date=None):
        """Get initial verification for a user with the 'photo_id_key'.

        Arguments:
            user(User): user object
            earliest_allowed_date(datetime): override expiration date for initial verification

        Return:
            SoftwareSecurePhotoVerification (object) or None
        """
        init_verification = cls.objects.filter(
            user=user,
            status__in=["submitted", "approved"],
            created_at__gte=(
                earliest_allowed_date or earliest_allowed_verification_date()
            )
        ).exclude(photo_id_key='')

        return init_verification.latest('created_at') if init_verification.exists() else None