from datetime import datetime from sqlalchemy import Column, Integer, String, DateTime, ForeignKey, Text from sqlalchemy.orm import relationship from app.database import Base class QuestionCategory(Base): __tablename__ = "question_categories" id = Column(Integer, primary_key=True, index=True) name = Column(String, nullable=False) description = Column(Text, nullable=True) user_id = Column(Integer, ForeignKey("users.id"), nullable=False) created_at = Column(DateTime, default=datetime.utcnow) questions = relationship("Question", back_populates="question_category", foreign_keys="Question.question_category_id")