42 lines
1.2 KiB
Python
42 lines
1.2 KiB
Python
"""DocumentCategory 文档分类模型。"""
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from sqlalchemy import ForeignKey, Integer, String
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from app.models.base import Base, TimestampMixin, UUIDPrimaryKeyMixin
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class DocumentCategory(UUIDPrimaryKeyMixin, TimestampMixin, Base):
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"""文档分类模型。
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技术审查 §2.2：document_categories 表。
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"""
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__tablename__ = "document_categories"
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knowledge_base_id: Mapped[str] = mapped_column(
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String(32),
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ForeignKey("knowledge_bases.id"),
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nullable=False,
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index=True,
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comment="所属知识库 ID",
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)
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name: Mapped[str] = mapped_column(
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String(255),
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nullable=False,
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comment="分类名称",
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)
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sort_order: Mapped[int] = mapped_column(
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Integer,
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default=0,
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nullable=False,
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comment="排序序号",
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)
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# 关系
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knowledge_base = relationship("KnowledgeBase", back_populates="categories", lazy="selectin")
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documents = relationship("Document", back_populates="category", lazy="selectin")
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def __repr__(self) -> str:
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return f"<DocumentCategory {self.name!r} (kb={self.knowledge_base_id!r})>"
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