44 lines
1.7 KiB
Python
44 lines
1.7 KiB
Python
from app.models.user import db
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from datetime import datetime
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class Category(db.Model):
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__tablename__ = 'categories'
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id = db.Column(db.Integer, primary_key=True)
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name = db.Column(db.String(64), nullable=False)
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parent_id = db.Column(db.Integer, db.ForeignKey('categories.id'), nullable=True)
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sort = db.Column(db.Integer, default=0)
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# 关系 - 只保留与自身的关系
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parent = db.relationship('Category', remote_side=[id], backref='children')
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def __repr__(self):
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return f'<Category {self.name}>'
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class Book(db.Model):
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__tablename__ = 'books'
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id = db.Column(db.Integer, primary_key=True)
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title = db.Column(db.String(255), nullable=False)
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author = db.Column(db.String(128), nullable=False)
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publisher = db.Column(db.String(128), nullable=True)
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category_id = db.Column(db.Integer, db.ForeignKey('categories.id'), nullable=True)
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tags = db.Column(db.String(255), nullable=True)
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isbn = db.Column(db.String(32), unique=True, nullable=True)
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publish_year = db.Column(db.String(16), nullable=True)
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description = db.Column(db.Text, nullable=True)
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cover_url = db.Column(db.String(255), nullable=True)
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stock = db.Column(db.Integer, default=0)
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price = db.Column(db.Numeric(10, 2), nullable=True)
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status = db.Column(db.Integer, default=1) # 1:可用, 0:不可用
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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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# 添加与 InventoryLog 的关系
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inventory_logs = db.relationship('InventoryLog', backref='book', lazy='dynamic')
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def __repr__(self):
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return f'<Book {self.title}>'
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