from datetime import datetime from sqlalchemy import Column, Integer, DateTime, ForeignKey from sqlalchemy.orm import relationship from app.database import Base class Favorite(Base): __tablename__ = "favorites" id = Column(Integer, primary_key=True, index=True) user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False) question_id = Column(Integer, ForeignKey("questions.id", ondelete="CASCADE"), nullable=False) created_at = Column(DateTime, default=datetime.utcnow) user = relationship("User", back_populates="favorites") question = relationship("Question")