73 lines
2.9 KiB
Python
73 lines
2.9 KiB
Python
from database import Base
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from datetime import datetime,date
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from sqlalchemy import *
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from sqlalchemy import Column, Integer, String, Date, JSON
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from sqlalchemy import Column, String, Date, Enum, DateTime, func
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from sqlalchemy.orm import declarative_base
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import enum
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class Class_info(Base): # python里的表名字
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__tablename__ = 'class_info' # 实际数据库的表名字
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class_id = Column(String(20)
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, primary_key=True
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, autoincrement=False
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, comment='班级编号，字符串类型手动维护')
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class_code = Column(String(20) # 对应数据库的varchar类型
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, nullable=False
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,comment='班级业务编码，格式示例：2026-CS-01'# 不允许为null
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)
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class_name = Column(String(50)
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, nullable=False
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,comment='所在班级显示名称，如“2026级计算机科学与技术1班”，直接用于前端展示'
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)
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grade_year = Column(Date
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,default=date.today
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,comment='入学年级，如2026，用数值存储比字符串更便于按年级筛选、排序'
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)
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# teacher_id = Column(Integer
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# , nullable=False
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# ,comment='班主任外键，关联教师表，一个班级对应一名班主任'
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# )
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#
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# student_id = Column(Integer
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# , nullable=False
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# ,comment='学号 用来连接学生表'
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# )
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enrollment_date = Column(Date
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,default=date.today
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,comment='班级正式入学日期'
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)
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status = Column(Integer
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, nullable=False
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,comment='班级正式入学日期'
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)
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tags = Column(JSON
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, nullable=False
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,comment='存储多维标签，例如：["重点班", "科技特长", "2026届"]'
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)
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is_deleted = Column(Boolean, default=0, comment="0=数据存在 1=数据逻辑删除")
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create_time = Column(DATETIME
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, default=datetime.now # 默认值是当前时间
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)
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update_time = Column(DATETIME
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, default=datetime.now # 首次创建的时间跟更新时间一致
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, onupdate=datetime.now
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)
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class StudentClassIntermediate(Base):
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__tablename__ = "student_class_intermediate_table"
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id = Column(String(20), primary_key=True)
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class_id= Column(String(20))
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student_id =Column(String(20))
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is_deleted= Column(Integer)
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create_time= Column(DateTime)
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update_time= Column(DateTime) |