from sqlalchemy import Integer, String, Column, DateTime, Enum as SQLEnum,Boolean,create_engine
from sqlalchemy.orm import declarative_base,sessionmaker

from enum import Enum
from datetime import datetime

tea_url ='mysql+pymysql://root:123456@127.0.0.1:3306/ai0824_stu?charset=utf8'

engine = create_engine(tea_url,pool_size=100, echo=False)
Base = declarative_base()
class Sex(Enum):
    w = '女'
    m = '男'

class Teacher(Base):
    __tablename__ = 's_teacher'
    id =Column(Integer, primary_key=True,autoincrement=True)
    t_name = Column(String(100),comment='教师名称')
    t_age = Column(Integer,comment='年龄')
    t_phone = Column(String(20),unique=True,comment='电话')
    t_sex = Column(SQLEnum(Sex,values_callable=lambda x: [e.value for e in x]),comment='性别')
    class_id = Column(String(100),comment='带班编号')
    create_time = Column(DateTime,default=datetime.now,comment='创建时间')
    update_time = Column(DateTime,default=datetime.now,onupdate=datetime.now,comment='更新时间')
    is_delete = Column(Boolean,default=False,comment='判断是否删除')

Base.metadata.create_all(engine)
Session = sessionmaker(bind=engine,autoflush=False,autocommit=False)