25 lines
848 B
Python
25 lines
848 B
Python
#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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