src/core/models/base.py

# src/core/models/base.py
from datetime import datetime
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Column, DateTime

Base = declarative_base()

class TimestampedModel(Base):
    """Base class for all models with timestamp fields"""
    __abstract__ = True

    created_at = Column(DateTime, default=datetime.utcnow)
    updated_at = Column(DateTime, onupdate=datetime.utcnow)