from sqlalchemy import Column,Integer,String,Date,Boolean
from sqlalchemy.dialects.mysql import DATETIME
from datetime import datetime
from database import Base




class ClassInfo(Base):
    __tablename__ = 'class_info'

    class_id = Column(Integer
                      ,primary_key=True
                      ,autoincrement=True
                      ,comment='班级id主键'
                      )
    class_name = Column(String(10)
                        ,nullable=False
                        ,comment='班级名称'
                        )
    class_teacher = Column(String(50)
                           ,nullable=False
                           ,comment='班主任'
                           )
    class_lecturer = Column(String(50)
                            ,nullable=False
                            ,comment='授课老师'
                            )
    class_start_time = Column(Date
                              ,nullable=False
                              ,comment='开班日期'
                              )
    class_end_time = Column(Date
                            ,nullable=False
                            ,comment='结课日期'
                            )
    is_delete = Column(Integer
                       ,default=0
                       ,comment='逻辑删除 0未删除 1已删除'
                       )
    create_time = Column(DATETIME
                         ,default=datetime.now
                         ,comment='记录创建时间'
                         )
    update_time = Column(DATETIME
                         ,default=datetime.now
                         ,onupdate=datetime.now
                         ,comment='记录更新时间'
                         )