Flask-Sqlalchemy嵌套表不起作用

如何解决Flask-Sqlalchemy嵌套表不起作用

简而言之，我想显示其中嵌套了Hobby表的User表

我的模特：

HobbyUser = db.Table('HobbyUser',db.Column('hobbyId',db.String,db.ForeignKey('Hobby.id')),db.Column('userId',db.ForeignKey('User.id')))


class User(db.Model):
    id = db.Column(db.Integer,primary_key=True)
    token = db.Column(db.String,nullable=False)
    name = db.Column(db.String,nullable=False)
    age = db.Column(db.Integer,nullable=False)
    gender = db.Column(db.Integer,nullable=False)
    height = db.Column(db.Float,nullable=False)
    address = db.Column(db.String,nullable=False)
    latitude = db.Column(db.Numeric,nullable=False)
    longitude = db.Column(db.Numeric,nullable=False)
    hobbies = db.Column(db.String,db.ForeignKey('HobbyUser.hobbyId'),nullable=False)

    def __init__(self,token,name,age,gender,height,address,latitude,longitude,hobbyId):
        self.token = token
        self.name = name
        self.age = age
        self.gender = gender
        self.height = height
        self.address = address
        self.latitude = latitude
        self.longitude = longitude
        self.hobbyId = hobbyId


class Hobby(db.Model):
    id = db.Column(db.String,primary_key=True)
    hobby = db.Column(db.String,id,hobby):
        self.id = id
        self.hobby = hobby

我的模式：

class UserSchema(ma.sqlAlchemyAutoSchema):
    id = fields.Integer(dump_only=True)
    token = fields.String(required=True)
    name = fields.String(required=True,validate=validate.Length(1))
    age = fields.Integer(required=True)
    gender = fields.Integer(required=True)
    height = fields.Float(required=True)
    address = fields.String(required=True)
    longitude = fields.Decimal(required=True)
    latitude = fields.Decimal(required=True)
    hobbyId = fields.String()
    hobbies = fields.nested('HobbySchema',many=True,only=('id','hobby',))
   
    class Meta:
        model = User
        sql_session = db.session
        fields = ('token','name','age','gender','height','weight','address','longitude','latitude','hobbies')


class HobbySchema(ma.sqlAlchemyAutoSchema):
    id = fields.Integer(dump_only=True)
    hobby = fields.String(required=True,many=True)
   
    class Meta:
        model = Hobby
        sql_session = db.session
        fields = ('id',)

根据以上内容，我只能获得用户内容。下面是输出：

{
       "address": "65A Tran Binh Trong Street","age": 1,"gender": 1,"height": 1.75,"hobbies": null,"latitude": 11,"longitude": 11,"name": "Tun1","token": "2pWQNFvnpz"
}

我如何得到这样的东西：

{
    "address": "65A Tran Binh Trong Street","hobbies": [{
                     "id":"1","hobby":"reading"
                }],"token": "2pWQNFvnpz"
}

我尝试并遵循了许多以前类似的已解决问题，但仍然无法解决。任何帮助将不胜感激