diff --git a/models/employment.py b/models/employment.py index e69de29..086ff92 100644 --- a/models/employment.py +++ b/models/employment.py @@ -0,0 +1,46 @@ +from sqlalchemy import * +from sqlalchemy.orm import declarative_base,sessionmaker +from datetime import datetime +from core.database import Base, engine + +db_url = "mysql+pymysql://root:123456@127.0.0.1:3306/student_manager?charset=utf8mb4" +engine = create_engine(db_url) # 连接地址 +Base = declarative_base() # 执行函数,返回一个基类 + +# 为了符合三范式,就业表只保存 student_id,不保存学生姓名和班级名称。查询返回时通过关联 students 和 classes 带出学生姓名、班级名称。 + +class Employment(Base): + __tablename__ = "employments" # 实际数据库的表名字 + id = Column(BigInteger, primary_key=True # 主键 + , autoincrement=True # 声明是自增主键 + ,comment="就业信息主键id") + student_id = Column(BigInteger, ForeignKey("students.id") # 外键 -> students.id + , nullable=False # 不允许为null + ,comment="关联学生id") + employment_status = Column(String(50) + , default="not_started" + ,comment="就业状态:not_started/job_hunting/offered/employed") + employment_open_date = Column(Date + ,comment="就业开放时间") + offer_date = Column(Date + ,comment="offer下发时间") + company_name = Column(String(100) + , comment="就业公司名称") + salary = Column(DECIMAL(10, 2) # 高精度浮点数薪资,最多 10 位数字,小数占 2 位 + , comment="就业薪资") + remark = Column(String(255) + ,default=None + , comment="备注信息") + created_at = Column(DateTime + , default=datetime.now + , comment="创建时间") + updated_at = Column(DateTime + , default=datetime.now + , onupdate=datetime.now + ,comment="更新时间") + is_deleted = Column(SmallInteger + ,default=0 + ,comment="逻辑删除:0正常,1删除") + +Base.metadata.create_all(engine) +print("建表完成:employments") \ No newline at end of file