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- 新增 Tag 领域实体 + TagModel/AssetTagModel ORM 模型
- Alembic 迁移 030：tags 表 + asset_tags 关联表
- TagRepository 端口 + SQLAlchemy/InMemory 实现
- Asset.tag_ids 多对多关联替代原 JSON tags
- GET /tags / POST /tags / DELETE /tags/{tag_id} 标签 CRUD
- POST /assets/{asset_id}/tags 打标 / DELETE 取消标签
- GET /assets 新增 tag_ids 筛选参数（逗号分隔，取交集）
- 19 个单元测试全部通过
25 lines
604 B
Python
25 lines
604 B
Python
"""标签领域实体。"""
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from dataclasses import dataclass, field
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from datetime import datetime, timezone
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from uuid import uuid4
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@dataclass(slots=True)
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class Tag:
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id: str
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user_id: str
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name: str
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created_at: datetime = field(default_factory=lambda: datetime.now(timezone.utc))
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@classmethod
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def create(cls, user_id: str, name: str) -> "Tag":
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clean_name = name.strip()
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if not clean_name:
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raise ValueError("标签名称不能为空")
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return cls(
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id=uuid4().hex,
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user_id=user_id,
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name=clean_name,
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)
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