更新table_base到最新版本
This commit is contained in:
14
middleware/dependencies.py
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14
middleware/dependencies.py
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@@ -0,0 +1,14 @@
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from typing import Annotated, TypeAlias
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from fastapi import Depends
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from sqlmodel.ext.asyncio.session import AsyncSession
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from model.database import Database
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from model.mixin.table import TableViewRequest
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SessionDep: TypeAlias = Annotated[AsyncSession, Depends(Database.get_session)]
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"""数据库会话依赖,用于路由函数中获取数据库会话"""
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# 新增:表格视图请求依赖(用于分页排序)
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TableViewRequestDep: TypeAlias = Annotated[TableViewRequest, Depends()]
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"""分页排序请求依赖,用于 LIST 端点"""
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@@ -3,3 +3,35 @@ from .setting import Setting, SettingResponse
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from .item import Item, ItemDataResponse, ItemTypeEnum, ItemStatusEnum
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from .user import User, UserTypeEnum
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from .database import Database
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# 新增:从 foxline 项目移植的 Mixin 组件
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from .mixin.table import (
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TableBaseMixin,
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UUIDTableBaseMixin,
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ListResponse,
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TableViewRequest,
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TimeFilterRequest,
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PaginationRequest,
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)
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__all__ = [
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"DefaultResponse",
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"TokenResponse",
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"TokenData",
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"Setting",
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"SettingResponse",
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"Item",
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"ItemDataResponse",
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"ItemTypeEnum",
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"ItemStatusEnum",
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"User",
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"UserTypeEnum",
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"Database",
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# 新增的 Mixin 组件
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"TableBaseMixin",
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"UUIDTableBaseMixin",
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"ListResponse",
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"TableViewRequest",
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"TimeFilterRequest",
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"PaginationRequest",
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]
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@@ -1,3 +1,28 @@
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from .sqlmodel_base import SQLModelBase
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from .table_base import TableBase, UUIDTableBase
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# 新的 Mixin 类(从 foxline 项目移植)
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from ..mixin.table import (
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TableBaseMixin,
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UUIDTableBaseMixin,
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ListResponse,
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TableViewRequest,
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TimeFilterRequest,
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PaginationRequest,
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)
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# 保持向后兼容:TableBase/UUIDTableBase 作为旧名称继续可用
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# 新代码推荐使用 TableBaseMixin/UUIDTableBaseMixin
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__all__ = [
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"SQLModelBase",
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"TableBase",
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"UUIDTableBase",
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# 新的 Mixin 类
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"TableBaseMixin",
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"UUIDTableBaseMixin",
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"ListResponse",
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"TableViewRequest",
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"TimeFilterRequest",
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"PaginationRequest",
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]
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@@ -1,6 +1,6 @@
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# ~/models/database.py
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from contextlib import asynccontextmanager
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from typing import AsyncGenerator
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from typing import AsyncGenerator, ClassVar
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import os
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from dotenv import load_dotenv
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from sqlalchemy.ext.asyncio import AsyncEngine, create_async_engine
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@@ -29,20 +29,34 @@ engine: AsyncEngine = create_async_engine(
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# max_overflow=64,
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)
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_async_session_factory = sessionmaker(
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engine, class_=AsyncSession, expire_on_commit=False
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)
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_async_session_factory = sessionmaker(engine, class_=AsyncSession)
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# 数据库类
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class Database:
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# Database 初始化方法
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"""
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数据库管理类(单例模式)
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从 foxline 项目移植的改进版本,支持:
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- ClassVar 单例模式
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- 触发器 SQL 支持
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- 优雅关闭
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"""
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engine: ClassVar[AsyncEngine | None] = None
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_async_session_factory: ClassVar[sessionmaker | None] = None
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def __init__(
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self, # self 用于引用类的实例
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self,
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db_path: str = "data.db", # db_path 数据库文件路径,默认为 data.db
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):
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# 保持向后兼容:实例化时使用全局 engine
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self.db_path = db_path
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@classmethod
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def get_engine(cls) -> AsyncEngine:
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"""获取数据库引擎"""
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return engine
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@staticmethod
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async def get_session() -> AsyncGenerator[AsyncSession, None]:
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"""FastAPI dependency to get a database session."""
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@@ -54,7 +68,7 @@ class Database:
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async def session_context() -> AsyncGenerator[AsyncSession, None]:
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"""
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提供异步上下文管理器用于直接获取数据库会话
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使用示例:
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>>> async with Database.session_context() as session:
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# 执行数据库操作
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@@ -63,11 +77,39 @@ class Database:
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async with _async_session_factory() as session:
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yield session
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async def init_db(self):
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"""创建数据库结构"""
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async def init_db(
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self,
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trigger_sqls: list[tuple[str, str, str]] | None = None,
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):
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"""
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创建数据库结构
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Args:
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trigger_sqls: 触发器SQL语句列表,每个元素为 (function_sql, drop_trigger_sql, create_trigger_sql)
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"""
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async with engine.begin() as conn:
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await conn.run_sync(SQLModel.metadata.create_all)
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# 创建触发器(如果提供)
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if trigger_sqls:
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for function_sql, drop_trigger_sql, create_trigger_sql in trigger_sqls:
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await conn.exec_driver_sql(function_sql)
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await conn.exec_driver_sql(drop_trigger_sql)
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await conn.exec_driver_sql(create_trigger_sql)
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# For internal use, create a temporary context manager
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async with self.session_context() as session:
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await migration(session) # 执行迁移脚本
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@classmethod
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async def close(cls):
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"""
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优雅地关闭数据库连接引擎。
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仅应在应用结束时调用。
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这会释放引擎维护的所有数据库连接池资源。
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在应用程序关闭时调用此方法是一个好习惯。
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"""
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if engine:
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await engine.dispose()
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@@ -2,7 +2,8 @@ from datetime import datetime
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from enum import StrEnum
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from typing import TYPE_CHECKING, Optional
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from uuid import UUID
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from sqlmodel import Field, Relationship
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from sqlmodel import Field, Relationship, String
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from pydantic_extra_types.semantic_version import SemanticVersion
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from .base import SQLModelBase, UUIDTableBase
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@@ -12,6 +13,7 @@ if TYPE_CHECKING:
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class ItemTypeEnum(StrEnum):
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normal = 'normal'
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car = 'car'
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esp32 = 'esp32'
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class ItemStatusEnum(StrEnum):
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ok = 'ok'
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@@ -36,6 +38,9 @@ class ItemBase(SQLModelBase):
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description: str | None = None
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"""物品描述"""
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version: SemanticVersion = Field(sa_type=String(64))
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"""版本号"""
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class Item(ItemBase, UUIDTableBase, table=True):
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expires_at: datetime | None = None
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"""物品过期时间"""
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@@ -56,14 +61,7 @@ class Item(ItemBase, UUIDTableBase, table=True):
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sub_items: list['Item'] = Relationship(back_populates='parent_item', passive_deletes='all')
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class ItemDataUpdateRequest(ItemBase):
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type: ItemTypeEnum | None = None
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"""物品的类型"""
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name: str | None = None
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"""物品名称"""
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status: ItemStatusEnum | None = None
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"""物品状态"""
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pass
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class ItemDataResponse(ItemBase):
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expires_at: datetime | None = None
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17
model/mixin/__init__.py
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17
model/mixin/__init__.py
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@@ -0,0 +1,17 @@
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from .table import (
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TableBaseMixin,
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UUIDTableBaseMixin,
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ListResponse,
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TableViewRequest,
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TimeFilterRequest,
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PaginationRequest,
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)
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__all__ = [
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"TableBaseMixin",
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"UUIDTableBaseMixin",
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"ListResponse",
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"TableViewRequest",
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"TimeFilterRequest",
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"PaginationRequest",
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]
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852
model/mixin/table.py
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852
model/mixin/table.py
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@@ -0,0 +1,852 @@
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"""
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表基类 Mixin
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提供 TableBaseMixin、UUIDTableBaseMixin 和 TableViewRequest。
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这些类实际上是 Mixin,为 SQLModel 模型提供 CRUD 操作和时间戳字段。
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版本历史:
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0.1.0 - delete() 方法支持条件删除(condition 参数)
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"""
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__version__ = "0.1.0"
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import uuid
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from datetime import datetime
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from typing import TypeVar, Literal, override, Any, ClassVar, Generic
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from pydantic import BaseModel, ConfigDict
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from fastapi import HTTPException
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from sqlalchemy import DateTime, BinaryExpression, ClauseElement, desc, asc, func, delete as sql_delete
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from sqlalchemy.orm import selectinload, Relationship
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from sqlmodel import Field, select
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from sqlmodel.ext.asyncio.session import AsyncSession
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from sqlalchemy.sql._typing import _OnClauseArgument
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from sqlalchemy.ext.asyncio import AsyncAttrs
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from sqlmodel.main import RelationshipInfo
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from ..base.sqlmodel_base import SQLModelBase
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# Type variables for generic type hints, improving code completion and analysis.
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T = TypeVar("T", bound="TableBaseMixin")
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M = TypeVar("M", bound="SQLModelBase")
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ItemT = TypeVar("ItemT")
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class ListResponse(BaseModel, Generic[ItemT]):
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"""
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泛型分页响应
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用于所有LIST端点的标准化响应格式,包含记录总数和项目列表。
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与 TableBaseMixin.get_with_count() 配合使用。
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使用示例:
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```python
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@router.get("", response_model=ListResponse[CharacterInfoResponse])
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async def list_characters(...) -> ListResponse[Character]:
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return await Character.get_with_count(session, table_view=table_view)
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```
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Attributes:
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count: 符合条件的记录总数(用于分页计算)
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items: 当前页的记录列表
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Note:
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继承BaseModel而非SQLModelBase,因为SQLModel的metaclass与Generic冲突。
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"""
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model_config = ConfigDict(use_attribute_docstrings=True)
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count: int
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"""符合条件的记录总数"""
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items: list[ItemT]
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"""当前页的记录列表"""
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# Lambda functions to get the current time, used as default factories in model fields.
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now = lambda: datetime.now()
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now_date = lambda: datetime.now().date()
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# ==================== 查询参数请求类 ====================
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class TimeFilterRequest(SQLModelBase):
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"""
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时间筛选请求参数
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用于 count() 等只需要时间筛选的场景。
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纯数据类,只负责参数校验和携带,SQL子句构建由 TableBaseMixin 负责。
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Raises:
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ValueError: 时间范围无效
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"""
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created_after_datetime: datetime | None = None
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"""创建时间起始筛选(created_at >= datetime),如果为None则不限制"""
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created_before_datetime: datetime | None = None
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"""创建时间结束筛选(created_at < datetime),如果为None则不限制"""
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updated_after_datetime: datetime | None = None
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"""更新时间起始筛选(updated_at >= datetime),如果为None则不限制"""
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updated_before_datetime: datetime | None = None
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"""更新时间结束筛选(updated_at < datetime),如果为None则不限制"""
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def model_post_init(self, __context: Any) -> None:
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"""
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验证时间范围有效性
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验证规则:
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1. 同类型:after 必须小于 before
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2. 跨类型:created_after 不能大于 updated_before(记录不可能在创建前被更新)
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"""
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# 同类型矛盾验证
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if self.created_after_datetime and self.created_before_datetime:
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if self.created_after_datetime >= self.created_before_datetime:
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raise ValueError("created_after_datetime 必须小于 created_before_datetime")
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if self.updated_after_datetime and self.updated_before_datetime:
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if self.updated_after_datetime >= self.updated_before_datetime:
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raise ValueError("updated_after_datetime 必须小于 updated_before_datetime")
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# 跨类型矛盾验证:created_after >= updated_before 意味着要求创建时间晚于或等于更新时间上界,逻辑矛盾
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if self.created_after_datetime and self.updated_before_datetime:
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if self.created_after_datetime >= self.updated_before_datetime:
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raise ValueError(
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"created_after_datetime 不能大于或等于 updated_before_datetime"
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"(记录的更新时间不可能早于或等于创建时间)"
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)
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class PaginationRequest(SQLModelBase):
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"""
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分页排序请求参数
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用于需要分页和排序的场景。
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纯数据类,只负责携带参数,SQL子句构建由 TableBaseMixin 负责。
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"""
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offset: int | None = Field(default=0, ge=0)
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"""偏移量(跳过前N条记录),必须为非负整数"""
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limit: int | None = Field(default=50, le=100)
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"""每页数量(返回最多N条记录),默认50,最大100"""
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desc: bool | None = True
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"""是否降序排序(True: 降序, False: 升序)"""
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order: Literal["created_at", "updated_at"] | None = "created_at"
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"""排序字段(created_at: 创建时间, updated_at: 更新时间)"""
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class TableViewRequest(TimeFilterRequest, PaginationRequest):
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"""
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表格视图请求参数(分页、排序和时间筛选)
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组合继承 TimeFilterRequest 和 PaginationRequest,用于 get() 等需要完整查询参数的场景。
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纯数据类,SQL子句构建由 TableBaseMixin 负责。
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使用示例:
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```python
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# 在端点中使用依赖注入
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@router.get("/list")
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async def list_items(
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session: SessionDep,
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table_view: TableViewRequestDep
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):
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items = await Item.get(
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session,
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fetch_mode="all",
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table_view=table_view
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)
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return items
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# 直接使用
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table_view = TableViewRequest(offset=0, limit=20, desc=True, order="created_at")
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items = await Item.get(session, fetch_mode="all", table_view=table_view)
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```
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"""
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pass
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# ==================== TableBaseMixin ====================
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class TableBaseMixin(AsyncAttrs):
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"""
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一个异步 CRUD 操作的基础模型类 Mixin.
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此类必须搭配SQLModelBase使用
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此类为所有继承它的 SQLModel 模型提供了通用的数据库操作方法,
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例如 add, save, update, delete, 和 get. 它还包括自动管理
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的 `created_at` 和 `updated_at` 时间戳字段.
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Attributes:
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id (int | None): 整数主键, 自动递增.
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created_at (datetime): 记录创建时的时间戳, 自动设置.
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updated_at (datetime): 记录每次更新时的时间戳, 自动更新.
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"""
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_is_table_mixin: ClassVar[bool] = True
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"""标记此类为表混入类的内部属性"""
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def __init_subclass__(cls, **kwargs):
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"""
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接受并传递子类定义时的关键字参数
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这允许元类 __DeclarativeMeta 处理的参数(如 table_args)
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能够正确传递,而不会在 __init_subclass__ 阶段报错。
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"""
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super().__init_subclass__(**kwargs)
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id: int | None = Field(default=None, primary_key=True)
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created_at: datetime = Field(default_factory=now)
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updated_at: datetime = Field(
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sa_type=DateTime,
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sa_column_kwargs={'default': now, 'onupdate': now},
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default_factory=now
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)
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@classmethod
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async def add(cls: type[T], session: AsyncSession, instances: T | list[T], refresh: bool = True) -> T | list[T]:
|
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"""
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向数据库中添加一个新的或多个新的记录.
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这个类方法可以接受单个模型实例或一个实例列表,并将它们
|
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一次性提交到数据库中。执行后,可以选择性地刷新这些实例以获取
|
||||
数据库生成的值(例如,自动递增的 ID).
|
||||
|
||||
Args:
|
||||
session (AsyncSession): 用于数据库操作的异步会话对象.
|
||||
instances (T | list[T]): 要添加的单个模型实例或模型实例列表.
|
||||
refresh (bool): 如果为 True, 将在提交后刷新实例以同步数据库状态. 默认为 True.
|
||||
|
||||
Returns:
|
||||
T | list[T]: 已添加并(可选地)刷新的一个或多个模型实例.
|
||||
|
||||
Usage:
|
||||
item1 = Item(name="Apple")
|
||||
item2 = Item(name="Banana")
|
||||
|
||||
# 添加多个实例
|
||||
added_items = await Item.add(session, [item1, item2])
|
||||
|
||||
# 添加单个实例
|
||||
item3 = Item(name="Cherry")
|
||||
added_item = await Item.add(session, item3)
|
||||
"""
|
||||
is_list = False
|
||||
if isinstance(instances, list):
|
||||
is_list = True
|
||||
session.add_all(instances)
|
||||
else:
|
||||
session.add(instances)
|
||||
|
||||
await session.commit()
|
||||
|
||||
if refresh:
|
||||
if is_list:
|
||||
for instance in instances:
|
||||
await session.refresh(instance)
|
||||
else:
|
||||
await session.refresh(instances)
|
||||
|
||||
return instances
|
||||
|
||||
async def save(
|
||||
self: T,
|
||||
session: AsyncSession,
|
||||
load: RelationshipInfo | list[RelationshipInfo] | None = None,
|
||||
refresh: bool = True,
|
||||
commit: bool = True
|
||||
) -> T:
|
||||
"""
|
||||
保存(插入或更新)当前模型实例到数据库.
|
||||
|
||||
这是一个实例方法,它将当前对象添加到会话中并提交更改。
|
||||
可以用于创建新记录或更新现有记录。还可以选择在保存后
|
||||
预加载(eager load)一个关联关系.
|
||||
|
||||
**重要**:调用此方法后,session中的所有对象都会过期(expired)。
|
||||
如果需要继续使用该对象,必须使用返回值:
|
||||
|
||||
```python
|
||||
# 正确:需要返回值时
|
||||
client = await client.save(session)
|
||||
return client
|
||||
|
||||
# 正确:不需要返回值时,指定 refresh=False 节省性能
|
||||
await client.save(session, refresh=False)
|
||||
|
||||
# 正确:批量操作时延迟提交
|
||||
for item in items:
|
||||
item = await item.save(session, commit=False)
|
||||
await session.commit()
|
||||
|
||||
# 错误:需要返回值但未使用
|
||||
await client.save(session)
|
||||
return client # client 对象已过期
|
||||
```
|
||||
|
||||
Args:
|
||||
session (AsyncSession): 用于数据库操作的异步会话对象.
|
||||
load (Relationship | None): 可选的,指定在保存和刷新后要预加载的关联属性.
|
||||
例如 `User.posts`.
|
||||
refresh (bool): 是否在保存后刷新对象。如果不需要使用返回值,
|
||||
设为 False 可节省一次数据库查询。默认为 True.
|
||||
commit (bool): 是否在保存后提交事务。如果为 False,只会 flush 获取 ID
|
||||
但不提交,适用于批量操作场景。默认为 True.
|
||||
|
||||
Returns:
|
||||
T: 如果 refresh=True,返回已刷新的模型实例;否则返回未刷新的 self.
|
||||
"""
|
||||
session.add(self)
|
||||
if commit:
|
||||
await session.commit()
|
||||
else:
|
||||
await session.flush()
|
||||
|
||||
if not refresh:
|
||||
return self
|
||||
|
||||
if load is not None:
|
||||
cls = type(self)
|
||||
await session.refresh(self)
|
||||
# 如果指定了 load, 重新获取实例并加载关联关系
|
||||
return await cls.get(session, cls.id == self.id, load=load)
|
||||
else:
|
||||
await session.refresh(self)
|
||||
return self
|
||||
|
||||
async def update(
|
||||
self: T,
|
||||
session: AsyncSession,
|
||||
other: M,
|
||||
extra_data: dict[str, Any] | None = None,
|
||||
exclude_unset: bool = True,
|
||||
exclude: set[str] | None = None,
|
||||
load: RelationshipInfo | list[RelationshipInfo] | None = None,
|
||||
refresh: bool = True,
|
||||
commit: bool = True
|
||||
) -> T:
|
||||
"""
|
||||
使用另一个模型实例或字典中的数据来更新当前实例.
|
||||
|
||||
此方法将 `other` 对象中的数据合并到当前实例中。默认情况下,
|
||||
它只会更新 `other` 中被显式设置的字段.
|
||||
|
||||
**重要**:调用此方法后,session中的所有对象都会过期(expired)。
|
||||
如果需要继续使用该对象,必须使用返回值:
|
||||
|
||||
```python
|
||||
# 正确:需要返回值时
|
||||
client = await client.update(session, update_data)
|
||||
return client
|
||||
|
||||
# 正确:需要返回值且需要加载关系时
|
||||
user = await user.update(session, update_data, load=User.permission)
|
||||
return user
|
||||
|
||||
# 正确:不需要返回值时,指定 refresh=False 节省性能
|
||||
await client.update(session, update_data, refresh=False)
|
||||
|
||||
# 正确:批量操作时延迟提交
|
||||
for item in items:
|
||||
item = await item.update(session, data, commit=False)
|
||||
await session.commit()
|
||||
|
||||
# 错误:需要返回值但未使用
|
||||
await client.update(session, update_data)
|
||||
return client # client 对象已过期
|
||||
```
|
||||
|
||||
Args:
|
||||
session (AsyncSession): 用于数据库操作的异步会话对象.
|
||||
other (M): 一个 SQLModel 或 Pydantic 模型实例,其数据将用于更新当前实例.
|
||||
extra_data (dict, optional): 一个额外的字典,用于更新当前实例的特定字段.
|
||||
exclude_unset (bool): 如果为 True, `other` 对象中未设置(即值为 None 或未提供)
|
||||
的字段将被忽略. 默认为 True.
|
||||
exclude (set[str] | None): 要从更新中排除的字段名集合。例如 {'permission'}.
|
||||
load (RelationshipInfo | None): 可选的,指定在更新和刷新后要预加载的关联属性.
|
||||
例如 `User.permission`.
|
||||
refresh (bool): 是否在更新后刷新对象。如果不需要使用返回值,
|
||||
设为 False 可节省一次数据库查询。默认为 True.
|
||||
commit (bool): 是否在更新后提交事务。如果为 False,只会 flush
|
||||
但不提交,适用于批量操作场景。默认为 True.
|
||||
|
||||
Returns:
|
||||
T: 如果 refresh=True,返回已刷新的模型实例;否则返回未刷新的 self.
|
||||
"""
|
||||
self.sqlmodel_update(
|
||||
other.model_dump(exclude_unset=exclude_unset, exclude=exclude),
|
||||
update=extra_data
|
||||
)
|
||||
|
||||
session.add(self)
|
||||
if commit:
|
||||
await session.commit()
|
||||
else:
|
||||
await session.flush()
|
||||
|
||||
if not refresh:
|
||||
return self
|
||||
|
||||
if load is not None:
|
||||
cls = type(self)
|
||||
await session.refresh(self)
|
||||
return await cls.get(session, cls.id == self.id, load=load)
|
||||
else:
|
||||
await session.refresh(self)
|
||||
return self
|
||||
|
||||
@classmethod
|
||||
async def delete(
|
||||
cls: type[T],
|
||||
session: AsyncSession,
|
||||
instances: T | list[T] | None = None,
|
||||
*,
|
||||
condition: BinaryExpression | ClauseElement | None = None,
|
||||
commit: bool = True,
|
||||
) -> int:
|
||||
"""
|
||||
从数据库中删除记录,支持实例删除和条件删除两种模式。
|
||||
|
||||
Args:
|
||||
session: 用于数据库操作的异步会话对象
|
||||
instances: 要删除的单个模型实例或模型实例列表(实例删除模式)
|
||||
condition: WHERE 条件表达式(条件删除模式,直接执行 SQL DELETE)
|
||||
commit: 是否在删除后提交事务。默认为 True
|
||||
|
||||
Returns:
|
||||
删除的记录数(条件删除模式返回实际删除数,实例删除模式返回实例数)
|
||||
|
||||
Raises:
|
||||
ValueError: 同时提供 instances 和 condition,或两者都未提供
|
||||
|
||||
Usage:
|
||||
# 实例删除模式
|
||||
item = await Item.get(session, Item.id == 1)
|
||||
if item:
|
||||
await Item.delete(session, item)
|
||||
|
||||
items = await Item.get(session, Item.name.in_(["A", "B"]), fetch_mode="all")
|
||||
if items:
|
||||
await Item.delete(session, items)
|
||||
|
||||
# 条件删除模式(高效批量删除,不加载实例到内存)
|
||||
deleted_count = await Item.delete(
|
||||
session,
|
||||
condition=(Item.user_id == user_id) & (Item.status == "expired"),
|
||||
)
|
||||
"""
|
||||
if instances is not None and condition is not None:
|
||||
raise ValueError("不能同时提供 instances 和 condition 参数")
|
||||
if instances is None and condition is None:
|
||||
raise ValueError("必须提供 instances 或 condition 参数之一")
|
||||
|
||||
deleted_count = 0
|
||||
|
||||
if condition is not None:
|
||||
# 条件删除模式:直接执行 SQL DELETE
|
||||
stmt = sql_delete(cls).where(condition)
|
||||
result = await session.execute(stmt)
|
||||
deleted_count = result.rowcount
|
||||
else:
|
||||
# 实例删除模式
|
||||
if isinstance(instances, list):
|
||||
for instance in instances:
|
||||
await session.delete(instance)
|
||||
deleted_count = len(instances)
|
||||
else:
|
||||
await session.delete(instances)
|
||||
deleted_count = 1
|
||||
|
||||
if commit:
|
||||
await session.commit()
|
||||
|
||||
return deleted_count
|
||||
|
||||
@classmethod
|
||||
def _build_time_filters(
|
||||
cls: type[T],
|
||||
created_before_datetime: datetime | None = None,
|
||||
created_after_datetime: datetime | None = None,
|
||||
updated_before_datetime: datetime | None = None,
|
||||
updated_after_datetime: datetime | None = None,
|
||||
) -> list[BinaryExpression]:
|
||||
"""
|
||||
构建时间筛选条件列表
|
||||
|
||||
Args:
|
||||
created_before_datetime: 筛选 created_at < datetime 的记录
|
||||
created_after_datetime: 筛选 created_at >= datetime 的记录
|
||||
updated_before_datetime: 筛选 updated_at < datetime 的记录
|
||||
updated_after_datetime: 筛选 updated_at >= datetime 的记录
|
||||
|
||||
Returns:
|
||||
BinaryExpression 条件列表
|
||||
"""
|
||||
filters: list[BinaryExpression] = []
|
||||
if created_after_datetime is not None:
|
||||
filters.append(cls.created_at >= created_after_datetime)
|
||||
if created_before_datetime is not None:
|
||||
filters.append(cls.created_at < created_before_datetime)
|
||||
if updated_after_datetime is not None:
|
||||
filters.append(cls.updated_at >= updated_after_datetime)
|
||||
if updated_before_datetime is not None:
|
||||
filters.append(cls.updated_at < updated_before_datetime)
|
||||
return filters
|
||||
|
||||
@classmethod
|
||||
async def get(
|
||||
cls: type[T],
|
||||
session: AsyncSession,
|
||||
condition: BinaryExpression | ClauseElement | None = None,
|
||||
*,
|
||||
offset: int | None = None,
|
||||
limit: int | None = None,
|
||||
fetch_mode: Literal["one", "first", "all"] = "first",
|
||||
join: type[T] | tuple[type[T], _OnClauseArgument] | None = None,
|
||||
options: list | None = None,
|
||||
load: RelationshipInfo | list[RelationshipInfo] | None = None,
|
||||
order_by: list[ClauseElement] | None = None,
|
||||
filter: BinaryExpression | ClauseElement | None = None,
|
||||
with_for_update: bool = False,
|
||||
table_view: TableViewRequest | None = None,
|
||||
created_before_datetime: datetime | None = None,
|
||||
created_after_datetime: datetime | None = None,
|
||||
updated_before_datetime: datetime | None = None,
|
||||
updated_after_datetime: datetime | None = None,
|
||||
) -> T | list[T] | None:
|
||||
"""
|
||||
根据指定的条件异步地从数据库中获取一个或多个模型实例.
|
||||
|
||||
这是一个功能强大的通用查询方法,支持过滤、排序、分页、连接查询和关联关系预加载.
|
||||
|
||||
Args:
|
||||
session (AsyncSession): 用于数据库操作的异步会话对象.
|
||||
condition (BinaryExpression | ClauseElement | None): 主要的查询过滤条件,
|
||||
例如 `User.id == 1`。
|
||||
当为 `None` 时,表示无条件查询(查询所有记录)。
|
||||
offset (int | None): 查询结果的起始偏移量, 用于分页.
|
||||
limit (int | None): 返回记录的最大数量, 用于分页.
|
||||
fetch_mode (Literal["one", "first", "all"]):
|
||||
- "one": 获取唯一的一条记录. 如果找不到或找到多条,会引发异常.
|
||||
- "first": 获取查询结果的第一条记录. 如果找不到,返回 `None`.
|
||||
- "all": 获取所有匹配的记录,返回一个列表.
|
||||
默认为 "first".
|
||||
join (type[T] | tuple[type[T], _OnClauseArgument] | None):
|
||||
要 JOIN 的模型类或一个包含模型类和 ON 子句的元组.
|
||||
例如 `User` 或 `(Profile, User.id == Profile.user_id)`.
|
||||
options (list | None): SQLAlchemy 查询选项列表, 通常用于预加载关联数据,
|
||||
例如 `[selectinload(User.posts)]`.
|
||||
load (Relationship | list[Relationship] | None): `selectinload` 的快捷方式,用于预加载关联关系.
|
||||
可以是单个关系或关系列表。例如 `User.profile` 或 `[User.profile, User.posts]`.
|
||||
order_by (list[ClauseElement] | None): 用于排序的排序列或表达式的列表.
|
||||
例如 `[User.name.asc(), User.created_at.desc()]`.
|
||||
filter (BinaryExpression | ClauseElement | None): 附加的过滤条件.
|
||||
|
||||
with_for_update (bool): 如果为 True, 在查询中使用 `FOR UPDATE` 锁定选定的行. 默认为 False.
|
||||
|
||||
table_view (TableViewRequest | None): TableViewRequest对象,如果提供则自动处理分页、排序和时间筛选。
|
||||
会覆盖offset、limit、order_by及时间筛选参数。
|
||||
这是推荐的分页排序方式,统一了所有LIST端点的参数格式。
|
||||
|
||||
created_before_datetime (datetime | None): 筛选 created_at < datetime 的记录
|
||||
created_after_datetime (datetime | None): 筛选 created_at >= datetime 的记录
|
||||
updated_before_datetime (datetime | None): 筛选 updated_at < datetime 的记录
|
||||
updated_after_datetime (datetime | None): 筛选 updated_at >= datetime 的记录
|
||||
|
||||
Returns:
|
||||
T | list[T] | None: 根据 `fetch_mode` 的设置,返回单个实例、实例列表或 `None`.
|
||||
|
||||
Raises:
|
||||
ValueError: 如果提供了无效的 `fetch_mode` 值.
|
||||
|
||||
Examples:
|
||||
# 使用table_view参数(推荐)
|
||||
users = await User.get(session, fetch_mode="all", table_view=table_view_args)
|
||||
|
||||
# 传统方式(向后兼容)
|
||||
users = await User.get(session, fetch_mode="all", offset=0, limit=20, order_by=[desc(User.created_at)])
|
||||
"""
|
||||
# 如果提供table_view,作为默认值使用(单独传入的参数优先级更高)
|
||||
if table_view:
|
||||
# 处理时间筛选(TimeFilterRequest 及其子类)
|
||||
if isinstance(table_view, TimeFilterRequest):
|
||||
if created_after_datetime is None and table_view.created_after_datetime is not None:
|
||||
created_after_datetime = table_view.created_after_datetime
|
||||
if created_before_datetime is None and table_view.created_before_datetime is not None:
|
||||
created_before_datetime = table_view.created_before_datetime
|
||||
if updated_after_datetime is None and table_view.updated_after_datetime is not None:
|
||||
updated_after_datetime = table_view.updated_after_datetime
|
||||
if updated_before_datetime is None and table_view.updated_before_datetime is not None:
|
||||
updated_before_datetime = table_view.updated_before_datetime
|
||||
# 处理分页排序(PaginationRequest 及其子类,包括 TableViewRequest)
|
||||
if isinstance(table_view, PaginationRequest):
|
||||
if offset is None:
|
||||
offset = table_view.offset
|
||||
if limit is None:
|
||||
limit = table_view.limit
|
||||
# 仅在未显式传入order_by时,从table_view构建排序子句
|
||||
if order_by is None:
|
||||
order_column = cls.created_at if table_view.order == "created_at" else cls.updated_at
|
||||
order_by = [desc(order_column) if table_view.desc else asc(order_column)]
|
||||
|
||||
statement = select(cls)
|
||||
|
||||
if condition is not None:
|
||||
statement = statement.where(condition)
|
||||
|
||||
# 应用时间筛选
|
||||
for time_filter in cls._build_time_filters(
|
||||
created_before_datetime, created_after_datetime,
|
||||
updated_before_datetime, updated_after_datetime
|
||||
):
|
||||
statement = statement.where(time_filter)
|
||||
|
||||
if join is not None:
|
||||
# 如果 join 是一个元组,解包它;否则直接使用
|
||||
if isinstance(join, tuple):
|
||||
statement = statement.join(*join)
|
||||
else:
|
||||
statement = statement.join(join)
|
||||
|
||||
if options:
|
||||
statement = statement.options(*options)
|
||||
|
||||
if load:
|
||||
# 标准化为列表
|
||||
load_list = load if isinstance(load, list) else [load]
|
||||
# 为每个关系添加 selectinload
|
||||
for rel in load_list:
|
||||
statement = statement.options(selectinload(rel))
|
||||
|
||||
if order_by is not None:
|
||||
statement = statement.order_by(*order_by)
|
||||
|
||||
if offset:
|
||||
statement = statement.offset(offset)
|
||||
|
||||
if limit:
|
||||
statement = statement.limit(limit)
|
||||
|
||||
if filter:
|
||||
statement = statement.filter(filter)
|
||||
|
||||
if with_for_update:
|
||||
statement = statement.with_for_update()
|
||||
|
||||
result = await session.exec(statement)
|
||||
|
||||
if fetch_mode == "one":
|
||||
return result.one()
|
||||
elif fetch_mode == "first":
|
||||
return result.first()
|
||||
elif fetch_mode == "all":
|
||||
return list(result.all())
|
||||
else:
|
||||
raise ValueError(f"无效的 fetch_mode: {fetch_mode}")
|
||||
|
||||
@classmethod
|
||||
async def count(
|
||||
cls: type[T],
|
||||
session: AsyncSession,
|
||||
condition: BinaryExpression | ClauseElement | None = None,
|
||||
*,
|
||||
time_filter: TimeFilterRequest | None = None,
|
||||
created_before_datetime: datetime | None = None,
|
||||
created_after_datetime: datetime | None = None,
|
||||
updated_before_datetime: datetime | None = None,
|
||||
updated_after_datetime: datetime | None = None,
|
||||
) -> int:
|
||||
"""
|
||||
根据条件统计记录数量(支持时间筛选)
|
||||
|
||||
使用数据库层面的 COUNT() 聚合函数,比 get() + len() 更高效。
|
||||
|
||||
Args:
|
||||
session: 数据库会话
|
||||
condition: 查询条件,例如 `User.is_active == True`
|
||||
time_filter: TimeFilterRequest 对象(优先级更高)
|
||||
created_before_datetime: 筛选 created_at < datetime 的记录
|
||||
created_after_datetime: 筛选 created_at >= datetime 的记录
|
||||
updated_before_datetime: 筛选 updated_at < datetime 的记录
|
||||
updated_after_datetime: 筛选 updated_at >= datetime 的记录
|
||||
|
||||
Returns:
|
||||
符合条件的记录数量
|
||||
|
||||
Examples:
|
||||
# 统计所有用户
|
||||
total = await User.count(session)
|
||||
|
||||
# 统计激活的用户
|
||||
count = await User.count(
|
||||
session,
|
||||
User.is_active == True
|
||||
)
|
||||
|
||||
# 使用 TimeFilterRequest 进行时间筛选
|
||||
count = await User.count(session, time_filter=time_filter_request)
|
||||
|
||||
# 使用独立时间参数
|
||||
count = await User.count(
|
||||
session,
|
||||
created_after_datetime=datetime(2025, 1, 1),
|
||||
created_before_datetime=datetime(2025, 2, 1),
|
||||
)
|
||||
"""
|
||||
# time_filter 的时间筛选优先级更高
|
||||
if isinstance(time_filter, TimeFilterRequest):
|
||||
if time_filter.created_after_datetime is not None:
|
||||
created_after_datetime = time_filter.created_after_datetime
|
||||
if time_filter.created_before_datetime is not None:
|
||||
created_before_datetime = time_filter.created_before_datetime
|
||||
if time_filter.updated_after_datetime is not None:
|
||||
updated_after_datetime = time_filter.updated_after_datetime
|
||||
if time_filter.updated_before_datetime is not None:
|
||||
updated_before_datetime = time_filter.updated_before_datetime
|
||||
|
||||
statement = select(func.count()).select_from(cls)
|
||||
|
||||
# 应用查询条件
|
||||
if condition is not None:
|
||||
statement = statement.where(condition)
|
||||
|
||||
# 应用时间筛选
|
||||
for time_condition in cls._build_time_filters(
|
||||
created_before_datetime, created_after_datetime,
|
||||
updated_before_datetime, updated_after_datetime
|
||||
):
|
||||
statement = statement.where(time_condition)
|
||||
|
||||
result = await session.scalar(statement)
|
||||
return result or 0
|
||||
|
||||
@classmethod
|
||||
async def get_with_count(
|
||||
cls: type[T],
|
||||
session: AsyncSession,
|
||||
condition: BinaryExpression | ClauseElement | None = None,
|
||||
*,
|
||||
join: type[T] | tuple[type[T], _OnClauseArgument] | None = None,
|
||||
options: list | None = None,
|
||||
load: RelationshipInfo | list[RelationshipInfo] | None = None,
|
||||
order_by: list[ClauseElement] | None = None,
|
||||
filter: BinaryExpression | ClauseElement | None = None,
|
||||
table_view: TableViewRequest | None = None,
|
||||
) -> 'ListResponse[T]':
|
||||
"""
|
||||
获取分页列表及总数,直接返回 ListResponse
|
||||
|
||||
同时返回符合条件的记录列表和总数,用于分页场景。
|
||||
与 get() 方法类似,但固定 fetch_mode="all" 并返回 ListResponse。
|
||||
|
||||
注意:如果子类的 get() 方法支持额外参数(如 filter_params),
|
||||
子类应该覆盖此方法以确保 count 和 items 使用相同的过滤条件。
|
||||
|
||||
Args:
|
||||
session: 数据库会话
|
||||
condition: 查询条件
|
||||
join: JOIN 的模型类或元组
|
||||
options: SQLAlchemy 查询选项
|
||||
load: selectinload 预加载关系
|
||||
order_by: 排序子句
|
||||
filter: 附加过滤条件
|
||||
table_view: 分页排序参数(推荐使用)
|
||||
|
||||
Returns:
|
||||
ListResponse[T]: 包含 count 和 items 的分页响应
|
||||
|
||||
Examples:
|
||||
```python
|
||||
@router.get("", response_model=ListResponse[CharacterInfoResponse])
|
||||
async def list_characters(
|
||||
session: SessionDep,
|
||||
table_view: TableViewRequestDep
|
||||
) -> ListResponse[Character]:
|
||||
return await Character.get_with_count(session, table_view=table_view)
|
||||
```
|
||||
"""
|
||||
# 提取时间筛选参数(用于 count)
|
||||
time_filter: TimeFilterRequest | None = None
|
||||
if table_view is not None:
|
||||
time_filter = TimeFilterRequest(
|
||||
created_after_datetime=table_view.created_after_datetime,
|
||||
created_before_datetime=table_view.created_before_datetime,
|
||||
updated_after_datetime=table_view.updated_after_datetime,
|
||||
updated_before_datetime=table_view.updated_before_datetime,
|
||||
)
|
||||
|
||||
# 获取总数(不带分页限制)
|
||||
total_count = await cls.count(session, condition, time_filter=time_filter)
|
||||
|
||||
# 获取分页数据
|
||||
items = await cls.get(
|
||||
session,
|
||||
condition,
|
||||
fetch_mode="all",
|
||||
join=join,
|
||||
options=options,
|
||||
load=load,
|
||||
order_by=order_by,
|
||||
filter=filter,
|
||||
table_view=table_view,
|
||||
)
|
||||
|
||||
return ListResponse(count=total_count, items=items)
|
||||
|
||||
@classmethod
|
||||
async def get_exist_one(cls: type[T], session: AsyncSession, id: int, load: RelationshipInfo | list[RelationshipInfo] | None = None) -> T:
|
||||
"""
|
||||
根据主键 ID 获取一个存在的记录, 如果不存在则抛出 404 异常.
|
||||
|
||||
这个方法是对 `get` 方法的封装,专门用于处理那种"记录必须存在"的业务场景。
|
||||
如果记录未找到,它会直接引发 FastAPI 的 `HTTPException`, 而不是返回 `None`.
|
||||
|
||||
Args:
|
||||
session (AsyncSession): 用于数据库操作的异步会话对象.
|
||||
id (int): 要查找的记录的主键 ID.
|
||||
load (Relationship | None): 可选的,用于预加载的关联属性.
|
||||
|
||||
Returns:
|
||||
T: 找到的模型实例.
|
||||
|
||||
Raises:
|
||||
HTTPException: 如果 ID 对应的记录不存在,则抛出状态码为 404 的异常.
|
||||
"""
|
||||
instance = await cls.get(session, cls.id == id, load=load)
|
||||
if not instance:
|
||||
raise HTTPException(status_code=404, detail="Not found")
|
||||
return instance
|
||||
|
||||
class UUIDTableBaseMixin(TableBaseMixin):
|
||||
"""
|
||||
一个使用 UUID 作为主键的异步 CRUD 操作基础模型类 Mixin.
|
||||
|
||||
此类继承自 `TableBaseMixin`, 将主键 `id` 的类型覆盖为 `uuid.UUID`,
|
||||
并为新记录自动生成 UUID. 它继承了 `TableBaseMixin` 的所有 CRUD 方法.
|
||||
|
||||
Attributes:
|
||||
id (uuid.UUID): UUID 类型的主键, 在创建时自动生成.
|
||||
"""
|
||||
id: uuid.UUID = Field(default_factory=uuid.uuid4, primary_key=True)
|
||||
"""覆盖 `TableBaseMixin` 的 id 字段,使用 UUID 作为主键."""
|
||||
|
||||
@override
|
||||
@classmethod
|
||||
async def get_exist_one(cls: type[T], session: AsyncSession, id: uuid.UUID, load: RelationshipInfo | list[RelationshipInfo] | None = None) -> T:
|
||||
"""
|
||||
根据 UUID 主键获取一个存在的记录, 如果不存在则抛出 404 异常.
|
||||
|
||||
此方法覆盖了父类的同名方法,以确保 `id` 参数的类型注解为 `uuid.UUID`,
|
||||
从而提供更好的类型安全和代码提示.
|
||||
|
||||
Args:
|
||||
session (AsyncSession): 用于数据库操作的异步会话对象.
|
||||
id (uuid.UUID): 要查找的记录的 UUID 主键.
|
||||
load (Relationship | None): 可选的,用于预加载的关联属性.
|
||||
|
||||
Returns:
|
||||
T: 找到的模型实例.
|
||||
|
||||
Raises:
|
||||
HTTPException: 如果 UUID 对应的记录不存在,则抛出状态码为 404 的异常.
|
||||
"""
|
||||
return await super().get_exist_one(session, id, load) # type: ignore
|
||||
0
model/version.py
Normal file
0
model/version.py
Normal file
@@ -9,7 +9,9 @@ dependencies = [
|
||||
"argon2-cffi>=25.1.0",
|
||||
"fastapi[standard]>=0.124.4",
|
||||
"loguru>=0.7.3",
|
||||
"pydantic-extra-types>=2.11.0",
|
||||
"pyjwt>=2.10.1",
|
||||
"semver>=3.0.4",
|
||||
"slowapi>=0.1.9",
|
||||
"sqlmodel>=0.0.27",
|
||||
]
|
||||
|
||||
@@ -4,11 +4,10 @@ from uuid import UUID
|
||||
from fastapi import APIRouter, Depends, Query, Request
|
||||
from slowapi import Limiter
|
||||
from slowapi.util import get_remote_address
|
||||
from sqlalchemy.ext.asyncio import AsyncSession
|
||||
|
||||
from dependencies import SessionDep
|
||||
from middleware.user import get_current_user
|
||||
from model import DefaultResponse, User, database
|
||||
from model import DefaultResponse, User
|
||||
from model.item import ItemDataUpdateRequest
|
||||
from services import object as object_service
|
||||
from starlette.status import HTTP_204_NO_CONTENT
|
||||
@@ -25,7 +24,7 @@ Router = APIRouter(prefix='/api/object', tags=['物品 Object'])
|
||||
response_description='物品信息列表'
|
||||
)
|
||||
async def get_items(
|
||||
session: Annotated[AsyncSession, Depends(database.Database.get_session)],
|
||||
session: SessionDep,
|
||||
token: Annotated[User, Depends(get_current_user)],
|
||||
id: int | None = Query(default=None, ge=1, description='物品ID'),
|
||||
key: str | None = Query(default=None, description='物品序列号')):
|
||||
@@ -50,7 +49,7 @@ async def get_items(
|
||||
response_description='添加物品成功'
|
||||
)
|
||||
async def add_items(
|
||||
session: Annotated[AsyncSession, Depends(database.Database.get_session)],
|
||||
session: SessionDep,
|
||||
user: Annotated[User, Depends(get_current_user)],
|
||||
request: ItemDataUpdateRequest
|
||||
):
|
||||
@@ -71,7 +70,7 @@ async def add_items(
|
||||
response_description='更新物品成功'
|
||||
)
|
||||
async def update_items(
|
||||
session: Annotated[AsyncSession, Depends(database.Database.get_session)],
|
||||
session: SessionDep,
|
||||
user: Annotated[User, Depends(get_current_user)],
|
||||
item_id: UUID,
|
||||
request: ItemDataUpdateRequest,
|
||||
@@ -107,7 +106,7 @@ async def update_items(
|
||||
response_description='删除物品成功'
|
||||
)
|
||||
async def delete_items(
|
||||
session: Annotated[AsyncSession, Depends(database.Database.get_session)],
|
||||
session: SessionDep,
|
||||
user: Annotated[User, Depends(get_current_user)],
|
||||
item_id: UUID
|
||||
):
|
||||
@@ -129,7 +128,7 @@ async def delete_items(
|
||||
response_description="物品信息"
|
||||
)
|
||||
async def get_object(
|
||||
session: Annotated[AsyncSession, Depends(database.Database.get_session)],
|
||||
session: SessionDep,
|
||||
item_id: UUID,
|
||||
request: Request
|
||||
) -> DefaultResponse:
|
||||
@@ -151,10 +150,9 @@ async def get_object(
|
||||
response_description="挪车通知结果"
|
||||
)
|
||||
async def notify_move_car(
|
||||
_request: Request,
|
||||
session: SessionDep,
|
||||
item_id: UUID,
|
||||
phone: str = None,
|
||||
phone: str | None = None,
|
||||
):
|
||||
"""
|
||||
通知车主进行挪车 / Notify car owner to move the car
|
||||
|
||||
Reference in New Issue
Block a user