28 lines
1.2 KiB
Python
28 lines
1.2 KiB
Python
from app.models.user import db
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from datetime import datetime
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class BorrowRecord(db.Model):
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__tablename__ = 'borrow_records'
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id = db.Column(db.Integer, primary_key=True)
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user_id = db.Column(db.Integer, db.ForeignKey('users.id'), nullable=False)
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book_id = db.Column(db.Integer, db.ForeignKey('books.id'), nullable=False)
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borrow_date = db.Column(db.DateTime, nullable=False, default=datetime.now)
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due_date = db.Column(db.DateTime, nullable=False)
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return_date = db.Column(db.DateTime, nullable=True)
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renew_count = db.Column(db.Integer, default=0)
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status = db.Column(db.Integer, default=1) # 1: 借出, 0: 已归还
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remark = db.Column(db.String(255), nullable=True)
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created_at = db.Column(db.DateTime, nullable=False, default=datetime.now)
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updated_at = db.Column(db.DateTime, nullable=False, default=datetime.now)
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# 添加反向关系引用
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user = db.relationship('User', backref=db.backref('borrow_records', lazy='dynamic'))
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book = db.relationship('Book', backref=db.backref('borrow_records', lazy='dynamic'))
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# book 关系会在后面步骤添加
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def __repr__(self):
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return f'<BorrowRecord {self.id}>'
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