Как сериализовать вложенный обьект во Flask?

Question

[phisher13]

При запросе на сервер выдает ответ:
{
"id": 16,
"title": "3rd movie",
"genre": "Genres.FANTASY",
"director": 1
}
Нужно чтобы по id директора возвращалась информация о нем
{
"id": 16,
"title": "3rd movie",
"genre": "Genres.FANTASY",
"director": "name surname"
}

models.py

class Film(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    title = db.Column(db.String(255), nullable=False)
    genre = db.Column(db.Enum(Genres), default=None)
    director = db.Column(db.Integer, db.ForeignKey('director.id'), default=None)

    def __repr__(self):
        return self.title

    def save(self):
        db.session.add(self)
        db.session.commit()

    def delete(self):
        db.session.delete(self)
        db.session.commit()

    @classmethod
    def get_by_name(cls, name):
        return cls.query.get_or_404(name)


class Director(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(255), nullable=False)
    surname = db.Column(db.String(255), nullable=False)
    film = db.relationship('Film')

    def __repr__(self):
        return self.name + ' ' + self.surname

    def save(self):
        db.session.add(self)
        db.session.commit()

    def delete(self):
        db.session.delete(self)
        db.session.commit()

схема

schema = movie.model(
    'Film', {
        'id': fields.Integer(),
        'title': fields.String(),
        'genre': fields.String(enums=['ACTION', 'COMEDY', 'DRAMA', 'HORROR', 'FANTASY']),
        'director': fields.Integer()
    }
)

Answer 1

[Jack444]

from sqlalchemy import select

request.json['director'] = select(Director).where(Direcor.id == request.json['director'])