models.py

from sqlalchemy import Column, Integer, String , ForeignKey , DateTime, Boolean, Text
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
from database import Base
from datetime import datetime

class User(Base):
    __tablename__ = "users"
    id = Column(Integer, primary_key=True, index=True)
    fullname = Column(String, index=True)
    username = Column(String, index=True , unique=True)
    hashed_password = Column(String)
    notes = relationship("Note", back_populates="owner")
    
    
class Note(Base):
    __tablename__ = "notes"
    id = Column(Integer, primary_key=True, index=True)
    title = Column(String, index=True)
    description = Column(Text)
    created_at =  Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
    is_deleted = Column(Boolean , default=False)
    owner_id = Column(Integer, ForeignKey("users.id"))
    owner = relationship("User", back_populates="notes")