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Python

# -*- coding: utf-8 -*-
from typing import TYPE_CHECKING
from sqlalchemy import Boolean, String, Integer, JSON, ForeignKey
from sqlalchemy.orm import relationship, Mapped, mapped_column
from app.core.base_model import ModelMixin
if TYPE_CHECKING:
from app.api.v1.module_system.role.model import RoleModel
class MenuModel(ModelMixin):
"""
菜单表 - 用于存储系统菜单信息
菜单类型说明:
- 1: 目录(一级菜单)
- 2: 菜单(二级菜单)
- 3: 按钮/权限(页面内按钮权限)
- 4: 外部链接
"""
__tablename__: str = "sys_menu"
__table_args__: dict[str, str] = ({'comment': '菜单表'})
__loader_options__: list[str] = ["roles"]
name: Mapped[str] = mapped_column(String(50), nullable=False, comment='菜单名称')
type: Mapped[int] = mapped_column(Integer, nullable=False, default=2, comment='菜单类型(1:目录 2:菜单 3:按钮/权限 4:链接)')
order: Mapped[int] = mapped_column(Integer, nullable=False, default=999, comment='显示排序')
permission: Mapped[str | None] = mapped_column(String(100), comment='权限标识(如:module_system:user:list)')
icon: Mapped[str | None] = mapped_column(String(50), comment='菜单图标')
route_name: Mapped[str | None] = mapped_column(String(100), comment='路由名称')
route_path: Mapped[str | None] = mapped_column(String(200), comment='路由路径')
component_path: Mapped[str | None] = mapped_column(String(200), comment='组件路径')
redirect: Mapped[str | None] = mapped_column(String(200), comment='重定向地址')
hidden: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False, comment='是否隐藏(True:隐藏 False:显示)')
keep_alive: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False, comment='是否缓存(True:是 False:否)')
always_show: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False, comment='是否始终显示(True:是 False:否)')
title: Mapped[str | None] = mapped_column(String(50), comment='菜单标题')
params: Mapped[list[dict[str, str]] | None] = mapped_column(JSON, comment='路由参数(JSON对象)')
affix: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False, comment='是否固定标签页(True:是 False:否)')
# 树形结构
parent_id: Mapped[int | None] = mapped_column(
Integer,
ForeignKey('sys_menu.id', ondelete='SET NULL'),
default=None,
index=True,
comment='父菜单ID'
)
# 关联关系
parent: Mapped["MenuModel | None"] = relationship(
back_populates='children',
remote_side="MenuModel.id",
foreign_keys="MenuModel.parent_id",
uselist=False
)
children: Mapped[list["MenuModel"] | None] = relationship(
back_populates='parent',
foreign_keys="MenuModel.parent_id",
order_by="MenuModel.order"
)
roles: Mapped[list["RoleModel"]] = relationship(
secondary="sys_role_menus",
back_populates="menus",
lazy="selectin"
)