from app.core.database import Base from sqlalchemy import Column, Integer, String, ForeignKey, DateTime from sqlalchemy.orm import relationship from datetime import datetime class Session(Base): __tablename__ = "sessions" id = Column(Integer, primary_key=True) user_id = Column(Integer, ForeignKey("users.id"), nullable=False) token = Column(String(64), unique=True, nullable=False, index=True) created_at = Column(DateTime, default=datetime.utcnow) user = relationship("User")