59 lines
2.0 KiB
Python
59 lines
2.0 KiB
Python
from sqlalchemy import Column, Integer, create_engine, String, ForeignKey,DATETIME,DateTime,func
|
|
from sqlalchemy.ext.asyncio import create_async_engine, async_sessionmaker, AsyncSession
|
|
from sqlalchemy.orm import sessionmaker,declarative_base,DeclarativeBase
|
|
|
|
from fastapi import APIRouter, Depends
|
|
from debug.orm_app.sqlalchemy_full_app import User
|
|
|
|
from datetime import datetime
|
|
|
|
|
|
db_url = "mysql+pymysql://geeker:geeker@localhost:3306/fastapi_tutor?charset=utf8mb4"
|
|
|
|
engine = create_engine(db_url)
|
|
session = sessionmaker(engine, expire_on_commit=False)
|
|
|
|
# 外键引用
|
|
Base = declarative_base()
|
|
class MetaBaseFunc(Base):
|
|
__tablename__ = "meta_base_func"
|
|
id = Column(Integer, primary_key=True)
|
|
pass
|
|
|
|
# Base.metadata.create_all(engine)
|
|
# Base 基类 - 可行，但不建议用多个Base分别创建表
|
|
# class Base(DeclarativeBase):
|
|
# pass
|
|
|
|
class MetaBase(Base):
|
|
__tablename__ = "base_column_test"
|
|
id = Column(Integer, primary_key=True)
|
|
num = Column(String(30),nullable=False,unique=True)
|
|
name = Column(String(30),nullable=False,default="")
|
|
|
|
# null
|
|
education = Column(String(50), nullable=True)
|
|
|
|
# 索引与外键 - 运行时查找
|
|
f_id = Column(Integer,ForeignKey("meta_base_func.id"),nullable=False, index=True)
|
|
fd_id = Column(Integer,ForeignKey("meta_base_func.id"),nullable=True)
|
|
|
|
|
|
# 日期处理
|
|
create_date = Column(DATETIME
|
|
, default=datetime.now # 默认值是当前时间
|
|
)
|
|
create_date1 = Column(DateTime, default=datetime.utcnow())
|
|
|
|
update_date = Column(DATETIME
|
|
, default=datetime.now # 首次创建的时间跟更新时间一致
|
|
, onupdate=datetime.now
|
|
)
|
|
|
|
# 默认值处理
|
|
create_time = Column(DateTime, nullable=False, server_default=func.now())
|
|
update_time = Column(DateTime, nullable=False, server_default=func.now(), onupdate=func.now())
|
|
|
|
Base.metadata.create_all(engine)
|
|
|