from sqlalchemy import Column, Integer, String, Boolean, Date
from sqlalchemy.orm import relationship

from database import Base


class Teacher(Base):
    __tablename__ = 'teacher'
    t_id = Column(Integer, primary_key=True, autoincrement=True) #老师id
    t_name = Column(String(50), nullable=False) #老师姓名
    t_gender = Column(String(50), nullable=False) #性别
    t_phone = Column(String(50), nullable=False)  #手机号
    t_subject = Column(String(50), nullable=False) #教授科目
    t_created=Column(Date,nullable=False) #入职时间
    t_delete = Column(Boolean, default=False)  #逻辑判断


    #关联表
    classes=relationship('Classes',secondary='teacher_classes',back_populates='teachers')

    def __repr__(self):
        return f"<Teacher(t_id={self.t_id}, name='{self.t_name}', subject='{self.t_subject}')>"