AttributeError: 'Customer' object has no attribute 'json' fastapi

Question

i have model called customer has following fields

class Customer(Base):
    __tablename__ = "customer"
    id = Column(Integer, primary_key=True,index=True)
    name = Column(String(256))
    mobile = Column(String(256))

this is my query

def get_referal_details_lms(db1: Session, mobile:str):
    data= db1.query(models.Customer).filter(models.Customer.mobile == mobile).first()
    print (data)     ## <db.models.Customer object at 0x7f6902d8e340>
    print (data.json())    ##AttributeError: 'Customer' object has no attribute 'json'
    return data

What is issue here and to convert json in same model i have User model and for that it is working fine the on;y difference is User from one table and Customer from other table.i have two databases sessions and its not problem with db's.

class User(Base):
    __tablename__ = "users"

    id = Column(Integer, primary_key=True, index=True)
    email = Column(String(256))
    mobile = Column(String(256))

query for this model

def get_user(db: Session, id: int):
    data=db.query(models.User).filter(models.User.id == id).first()
    print(data)    ## <db.models.User object at 0x7f6902d8e340>
    print(data.json())  ##{'mobile': '11111111', 'id': 1, 'email': None}

Thanks for correcting me.

Answer 1

SQLAlchemy models in general have no json method. That must be something defined in your code somewhere, that's not defined for the Customer class.