71 lines
1.9 KiB
Python
71 lines
1.9 KiB
Python
from __future__ import annotations
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from datetime import datetime
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from sqlalchemy import CheckConstraint, DateTime, Index, Text, func
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from sqlalchemy.orm import Mapped, mapped_column
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from app.db.base import Base
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class Content(Base):
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"""
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文案主体表。
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多语言约束：
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- 当前仅支持 EN / TC（繁体中文）
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- 至少需要提供 `text_en` 或 `text_tc` 之一
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"""
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__tablename__ = "contents"
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__table_args__ = (
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CheckConstraint(
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"(text_en IS NOT NULL) OR (text_tc IS NOT NULL)",
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name="chk_contents_text_present",
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),
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Index("idx_contents_author_id", "author_id"),
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Index("idx_contents_template_id", "template_id"),
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)
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content_id: Mapped[int] = mapped_column(
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primary_key=True,
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autoincrement=True,
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comment="文案唯一 ID（自增；文案微调时保持不变）",
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)
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text_en: Mapped[str | None] = mapped_column(
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Text,
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nullable=True,
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comment="英文文案（可空；若为空则必须提供 text_tc）",
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)
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text_tc: Mapped[str | None] = mapped_column(
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Text,
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nullable=True,
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comment="繁体中文文案（可空；若为空则必须提供 text_en）",
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)
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author_id: Mapped[str | None] = mapped_column(
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nullable=True,
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comment="作者/来源 ID（可空；用于多样性与频控）",
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)
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template_id: Mapped[str | None] = mapped_column(
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nullable=True,
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comment="模板 ID（可空；用于多样性与频控）",
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)
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created_at: Mapped[datetime] = mapped_column(
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DateTime,
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nullable=False,
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server_default=func.now(),
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comment="创建时间",
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)
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updated_at: Mapped[datetime] = mapped_column(
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DateTime,
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nullable=False,
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server_default=func.now(),
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server_onupdate=func.now(),
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comment="更新时间",
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)
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