43 lines
1.5 KiB
Python
43 lines
1.5 KiB
Python
# my_project/models/folder.py
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from typing import Optional, List, TYPE_CHECKING
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from sqlmodel import Field, Relationship, UniqueConstraint, CheckConstraint
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from .base import TableBase
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from datetime import datetime
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if TYPE_CHECKING:
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from .user import User
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from .policy import Policy
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from .file import File
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class Folder(TableBase, table=True):
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__tablename__ = 'folders'
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__table_args__ = (
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UniqueConstraint(
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"owner_id",
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"parent_id",
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"name",
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name="uq_folder_name_parent",
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),
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CheckConstraint(
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"name NOT LIKE '%/%' AND name NOT LIKE '%\\%'",
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name="ck_folder_name_no_slash",
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),
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)
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name: str = Field(max_length=255, nullable=False, description="目录名")
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# 外键
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parent_id: Optional[int] = Field(default=None, foreign_key="folders.id", index=True, description="父目录ID")
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owner_id: int = Field(foreign_key="users.id", index=True, description="所有者用户ID")
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policy_id: int = Field(foreign_key="policies.id", index=True, description="所属存储策略ID")
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# 关系
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owner: "User" = Relationship(back_populates="folders")
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policy: "Policy" = Relationship(back_populates="folders")
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# 自我引用关系
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parent: Optional["Folder"] = Relationship(back_populates="children", sa_relationship_kwargs={"remote_side": "Folder.id"})
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children: List["Folder"] = Relationship(back_populates="parent")
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files: List["File"] = Relationship(back_populates="folder") |