from datetime import datetime from sqlalchemy import DateTime, String from sqlalchemy.orm import Mapped, mapped_column from app.db import Base class Box(Base): __tablename__ = "boxes" id: Mapped[int] = mapped_column(primary_key=True, index=True) name: Mapped[str] = mapped_column(String(100), nullable=False, default="Sample Box") created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, nullable=False)