24 lines
911 B
Python
24 lines
911 B
Python
from app.models.user import db
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from datetime import datetime
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class InventoryLog(db.Model):
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__tablename__ = 'inventory_logs'
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id = db.Column(db.Integer, primary_key=True)
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book_id = db.Column(db.Integer, db.ForeignKey('books.id'), nullable=False)
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change_type = db.Column(db.String(32), nullable=False) # 'in' 入库, 'out' 出库
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change_amount = db.Column(db.Integer, nullable=False)
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after_stock = db.Column(db.Integer, nullable=False)
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operator_id = db.Column(db.Integer, db.ForeignKey('users.id'), nullable=True)
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remark = db.Column(db.String(255), nullable=True)
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changed_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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operator = db.relationship('User', backref=db.backref('inventory_logs', 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'<InventoryLog {self.id}>'
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