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zhangtao
60fe97afc3
- 重构GenTableDao和GenTableColumnDao，继承CRUDBase，添加权限鉴权支持 - 优化分页逻辑，支持非分页时返回完整结果集 - 调整查询条件，支持大小写不敏感模糊查询和时间范围过滤 - 统一接口响应格式，返回SuccessResponse或ErrorResponse - 替换旧的依赖和注解，改用新的认证和日志中间件 - 文档README.en.md和README.md内容格式及示例完善与优化 - alembic/env.py中数据库URL配置优化，增加异常检测保障环境配置正确 - 代码生成控制器genController新增代码批量生成下载流和本地生成文件覆盖检测 - 删除或更新废弃代码，清理无用导入，提升项目整体代码质量和可维护性
77 lines
2.7 KiB
Python
77 lines
2.7 KiB
Python
# -*- coding: utf-8 -*-
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"""
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基础模型模块
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提供跨数据库兼容的基础模型类和类型装饰器
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"""
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from datetime import datetime
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from typing import Optional, Dict, Any
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from sqlalchemy import Boolean, String, Integer, DateTime, ForeignKey, Text, BigInteger
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from sqlalchemy.dialects.postgresql import UUID
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from sqlalchemy.ext.asyncio import AsyncAttrs
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from sqlalchemy.orm import relationship, DeclarativeBase, Mapped, declared_attr, mapped_column, MappedAsDataclass
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class MappedBase(AsyncAttrs, DeclarativeBase):
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"""
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声明式基类
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`AsyncAttrs <https://docs.sqlalchemy.org/en/20/orm/extensions/asyncio.html#sqlalchemy.ext.asyncio.AsyncAttrs>`__
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`DeclarativeBase <https://docs.sqlalchemy.org/en/20/orm/declarative_config.html>`__
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`mapped_column() <https://docs.sqlalchemy.org/en/20/orm/mapping_api.html#sqlalchemy.orm.mapped_column>`__
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兼容 SQLite、MySQL 和 PostgreSQL
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"""
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__abstract__ = True
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@declared_attr.directive
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def __tablename__(cls) -> str:
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"""生成表名"""
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return cls.__name__.lower()
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@declared_attr.directive
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def __table_args__(cls) -> dict:
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"""表配置"""
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return {'comment': cls.__doc__ or ''}
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class ModelMixin(MappedBase):
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"""
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基础模型混合类
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"""
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__abstract__ = True
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id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True, comment='主键ID')
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description: Mapped[Optional[str]] = mapped_column(Text, nullable=True, default=None, comment="备注/描述")
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created_at: Mapped[Optional[datetime]] = mapped_column(DateTime, nullable=True, default=datetime.now, comment='创建时间')
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create_by: Mapped[Optional[str]] = mapped_column(String(64), default='', comment='创建者')
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updated_at: Mapped[Optional[datetime]] = mapped_column(DateTime, nullable=True, default=datetime.now, onupdate=datetime.now, comment='更新时间')
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update_by: Mapped[Optional[str]] = mapped_column(String(64), default='', comment='更新者')
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del_flag: Mapped[str] = mapped_column(String(1), nullable=False, default='0', comment='删除标志（0代表存在 2代表删除）')
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class CreatorMixin(ModelMixin):
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"""
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创建人混合类
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"""
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__abstract__ = True
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creator_id: Mapped[Optional[int]] = mapped_column(Integer, nullable=True, index=True, comment="创建人ID")
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@declared_attr
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def creator(cls) -> Mapped[Optional["UserModel"]]:
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"""创建人关联关系（延迟加载，避免循环依赖）"""
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return relationship(
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"UserModel",
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primaryjoin=f"{cls.__name__}.creator_id == UserModel.id",
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lazy="selectin",
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foreign_keys=[cls.creator_id],
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viewonly=True,
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uselist=False # 明确指定返回单个对象
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)
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