这是我们组的项目
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from .advisor_model import Advisor
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from .class_model import Classes
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# from .demo import Student
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from .employment_model import Employment
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from .score_model import Score
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# from .score_model import Score
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from .student_model import Student
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from .teacher_model import Teacher
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__all__ = [ "Advisor",'Student',"Employment","Classes","Teacher","Score"]
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import enum
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from sqlalchemy import Column, Enum as SQLEnum, Integer, String
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from sqlalchemy.orm import relationship
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from database import Base
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# 性别枚举：只允许 男 / 女
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class GenderEnum(str, enum.Enum):
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MALE = "男"
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FEMALE = "女"
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# 本文件只定义 advisor 表的结构，映射到 MySQL 数据库。
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# 注意：这里只放「表长什么样」，不建表、不插数据、不创建会话。
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class Advisor(Base):
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# 顾问表 表名 advisor
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__tablename__ = 'advisor'
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# 定义字段
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id = Column(Integer, primary_key=True, autoincrement=True)
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advisor_name = Column(String(20), unique=True, nullable=False)
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flag = Column(Integer, nullable=False)
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# 性别：枚举类型（男/女），可空
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gender = Column(SQLEnum(GenderEnum, values_callable=lambda e: [m.value for m in e]), nullable=True)
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# 电话：11位纯数字（校验在 Schema 层做），非必填
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phone = Column(String(11), nullable=True)
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students = relationship("Student", back_populates="advisor")
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# 关联 Student（一对多：一个顾问对应多个学生）
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# 等 student_model.py 里写好 Student 模型、且两边 back_populates 对上后，再取消注释启用。
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# student = relationship("Student", back_populates="advisor")
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#导入需要用的工具
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from sqlalchemy import Column, Integer, String, DateTime
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from sqlalchemy.orm import relationship
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from database import Base
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from model.teacher_model import teacher_class
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#班级表
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class Classes(Base):
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__tablename__ = "classes"
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cid = Column(Integer, primary_key=True, autoincrement=True)
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class_name = Column(String(10), nullable=False)
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start_time = Column(DateTime,nullable=False)
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head_teacher = Column(String(10),nullable=False)
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teacher = Column(String(15),nullable=False)
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is_del = Column(Integer, default=1) # 与现有查询/删除接口一致：1有效，0删除
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#老师表和班级表多对多
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teachers = relationship("Teacher", secondary=teacher_class, back_populates="classes")
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# #班级表和学生表一对多
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students = relationship("Student", back_populates="classes")
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#
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# from sqlalchemy import Column, Integer, String, ForeignKey
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# from sqlalchemy.orm import relationship
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# from sqlalchemy.sql.sqltypes import DateTime
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# from database import Base
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#
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#
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# #学生表
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# class Student(Base):
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# __tablename__ = "student"
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# id = Column(Integer, primary_key=True,autoincrement=True) #学生编号
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# # class_id = Column(Integer,ForeignKey('student_class.id')) #班级ID
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# advisor=relationship("Advisor",back_populates="students")
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# student_no = Column(Integer) #学号
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# name = Column(String(10),nullable=False) #姓名
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# native_places = Column(String(10),nullable=False) #籍贯
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# school = Column(String(10),nullable=False) #学校
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# major = Column(String(10),nullable=False) #专业
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# enrollment_time = Column(DateTime(timezone=True),nullable=False) #入学时间
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# graduation_time = Column(DateTime(timezone=True),nullable=False) #毕业时间
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# education = Column(String(10),nullable=False) #学历
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# advisor_id = Column(Integer,ForeignKey('advisor.id'),nullable=False) #顾问编号
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# age = Column(String(10),nullable=False) #年龄
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# gender = Column(String(10),nullable=False) #性别
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# status = Column(String(10)) #状态(在读、进入就业、已就业)
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# flag = Column(Integer,nullable=False) #逻辑删除标记 0表示已经删除 1表示可以删除
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# scores = relationship("Score",back_populates="student")
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#
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# path: model/employment_model.py
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# time：2026年9月12日10:24
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# title：就业信息 ORM 模型
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# author：周兴
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# info：该文件用于定义就业表在数据库里长什么样，把MySQL的employment表映射成Python里面的Employment ORM类
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from sqlalchemy import Column, Integer, String, DateTime, Float, ForeignKey
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from database import Base
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class Employment(Base):
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__tablename__ = "employment" # Python 类对应 MySQL 里面的 employment 表。
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id = Column(Integer,primary_key=True,autoincrement=True) # 主键
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student_id = Column(Integer,ForeignKey('student.sid'),nullable=False,unique=True) # 学生ID，外键关联 student表的id
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employment_start_time = Column(DateTime,nullable=True)
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# offer下发时间
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offer_time = Column(
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DateTime,
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nullable=True
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)
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# 公司名称
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company_name = Column(
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String(100),
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nullable=True
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)
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# 薪资
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salary = Column(
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Float,
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nullable=True
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)
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# 逻辑删除标记：1表示正常，0表示已删除
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flag = Column(
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Integer,
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default=1,
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nullable=False
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)
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from sqlalchemy import Column, Integer, ForeignKey
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from sqlalchemy.orm import relationship
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from database import Base
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class Score(Base):
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__tablename__ = "score"
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id = Column(Integer, primary_key=True,autoincrement=True)
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student_id = Column(Integer, ForeignKey("student.sid"),nullable=False)
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exam_id = Column(Integer, nullable=False)
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score = Column(Integer, nullable=False)
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flag = Column(Integer,default=1,nullable=False)
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student=relationship("Student",back_populates="scores")
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from sqlalchemy import ForeignKey, Column, Integer, String, Date, Table
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from sqlalchemy.orm import relationship
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from database import Base
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from model.teacher_model import teacher_student
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# 。创建新学生记录(包含字段:学生编号ID、学生班级、学生姓名、籍贯、毕业院校、专业、入学时间、毕
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# 业时间、学历、顾问编号、年龄、性别).可选增加字段:状态(在读、进入就业、已就业)
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# 。查询学生信息(支持按编号、姓名、班级等条件筛选)、
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# 更新学生信息。
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# 逻辑删除学生。
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# 。提示:可设计学号生成规则，而非单一自增，可选扩展:支持上传Excel 文件批量创建学生
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class Student(Base):
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__tablename__ = 'student'
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sid = Column(Integer, primary_key=True, autoincrement=True)
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student_no=Column(String(50), unique=True, nullable=False)
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student_name=Column(String(50), nullable=False)
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native_place=Column(String(200), nullable=True)
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school=Column(String(100), nullable=True)
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major=Column(String(50), nullable=True)
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enrollment_time=Column(Date, nullable=True)
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graduation_time=Column(Date, nullable=True)
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education=Column(String(100), nullable=True)
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age=Column(Integer, nullable=True)
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gender=Column(String(20), nullable=True)
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state=Column(String(20),nullable=True)
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flag=Column(Integer,nullable=False,default=1)
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class_id = Column(Integer, ForeignKey('classes.cid'), nullable=False)
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teachers = relationship("Teacher", secondary=teacher_student, back_populates="students")
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advisor = relationship("Advisor", back_populates="students")
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advisor_id = Column(Integer, ForeignKey('advisor.id'), nullable=False)
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scores=relationship("Score",back_populates="student")
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classes = relationship("Classes", back_populates="students")
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# 从 sqlalchemy 库导入 create_engine，用于创建数据库连接引擎
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from sqlalchemy import Column, Integer, String, ForeignKey, Table,Date
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from sqlalchemy.orm import relationship
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from database import Base
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#=============== 多对多中间表1：老师 ↔ 班级 ===============
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teacher_class = Table(
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"teacher_class", # 中间表名
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Base.metadata, # 绑定到 Base 的元数据
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#两个外键，共同组成联合主键，防止重复绑定同一个老师班级
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Column("tid",Integer,ForeignKey("teacher.tid"),primary_key=True), # 老师ID，外键指向老师表，同时是组合主键的一部分
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Column("cid",Integer,ForeignKey("classes.cid"),primary_key=True), # 班级ID，外键指向班级表，同时是组合主键的一部分
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)
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#=============== 多对多中间表2： 老师 ↔ 学生 ===============
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teacher_student = Table(
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"teacher_student", # 中间表名
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Base.metadata, # 绑定到 Base 的元数据
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#两个外键，共同组成联合主键，防止重复绑定同一个老师学生
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Column("tid",Integer,ForeignKey("teacher.tid"),primary_key=True),# 老师ID，外键指向老师表，同时是组合主键的一部分
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Column("sid",Integer,ForeignKey("student.sid"),primary_key=True),# 学生ID，外键指向学生表，同时是组合主键的一部分
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)
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#=============== 老师主表 ===============
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class Teacher(Base):
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__tablename__ = "teacher" #数据库中对应表名
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tid = Column(Integer, primary_key=True, autoincrement=True) #主键：老师编号，自增。
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t_name = Column(String(20), nullable=False) #老师名字，非空，最大20个字符
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phone = Column(String(11), unique=True) #手机号，唯一
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subject = Column(String(20)) #授课科目，默认值为“班主任”
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entry_time = Column(Date) #入职时间
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is_deleted = Column(Integer, default=1) #逻辑删除，0=已删除，1=未删除
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#=============== 关联关系定义 ==========
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# secondary=中间表：指定通过哪张中间表关联
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# back_populates：反向关联，和Class表中的teachers对应，实现双向查询
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# 多对多：一个老师对应多个班级
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classes = relationship("Classes", secondary=teacher_class, back_populates="teachers")
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# 多对多：一个老师对应多个学生
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students = relationship("Student", secondary=teacher_student, back_populates="teachers")
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