from core.database import Base
from sqlalchemy import *
from datetime import datetime

class Student(Base):
    __tablename__ = 'student_info_detail'
    id = Column(Integer
                , primary_key=True
                , autoincrement=True
                , comment = '学生编号，自增主键'
                )
    student_no = Column(VARCHAR(50)
                        , unique = True)
    student_name = Column(VARCHAR(50))
    class_id = Column(Integer
                      ,foreign_key = 'class_info_detail.id'
                      )#外键约束 班级表的主键id，存在这个班级，学生表才可以输入
    consultant_id = Column(Integer
                           ,nullable = True
                           ,foreign_key = 'consultant_info_detail.id'
                           )#外键约束 顾问表的主键id，存在这个顾问，才可以写入，允许为空
    native_place = Column(VARCHAR(100)
                          ,nullable = True)
    graduation_school = Column(VARCHAR(100)
                               ,nullable = True)
    major = Column(VARCHAR(100)
                   ,nullable = True)
    enrollment_date = Column(Date
                             ,nullable = False)#入学时间必填
    graduation_date = Column(Date,
                             nullable = True)#毕业时间可以为空
    education = Column(VARCHAR(50)
                       ,nullable = True)#学历可以为空
    age = Column(Integer
                 ,nullable = False)
    gender = Column(VARCHAR(10)
                    ,nullable = False)
    create_at = Column(DATETIME
                       ,default = datetime.now)
    update_at = Column(DATETIME
                       ,default = datetime.now
                       ,onupdate = datetime.now)
    is_deleted = Column(Integer
                        ,default = 0)#逻辑删除，默认为0，为1则表示已删除