70 lines
3.1 KiB
Python
70 lines
3.1 KiB
Python
# inventory-backend/app/models/inbound/service.py
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from app.extensions import db
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from datetime import datetime
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class StockService(db.Model):
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"""
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服务权益库存表
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对应数据库表: stock_service
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"""
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__tablename__ = 'stock_service'
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id = db.Column(db.Integer, primary_key=True, autoincrement=True)
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# 关联基础物料信息
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# 注意：这里使用了 db.ForeignKey 指向 material_base 表的 id
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base_id = db.Column(db.Integer, db.ForeignKey('material_base.id'), nullable=False)
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# 系统生成的SKU，格式 SRV-YYYYMMDD-XXXX
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sku = db.Column(db.String(64), unique=True, nullable=False)
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# 售价
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sale_price = db.Column(db.Numeric(10, 2), nullable=False)
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# 服务商名称
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provider_name = db.Column(db.String(255), nullable=False, default='')
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# 服务详情/简介
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description = db.Column(db.Text, default='')
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# ==========================================================================
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# 【新增】库存数量字段
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# 上一轮的 Service 代码中尝试累加这两个字段，如果模型里没有，程序会报错
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# ==========================================================================
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actual_quantity = db.Column(db.Integer, default=0, nullable=False, comment='库存数量')
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available_quantity = db.Column(db.Integer, default=0, nullable=False, comment='可用数量')
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# 创建时间与更新时间
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created_at = db.Column(db.DateTime, default=datetime.now, nullable=False)
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updated_at = db.Column(db.DateTime, default=datetime.now, onupdate=datetime.now, nullable=False)
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# 软删除标志
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is_deleted = db.Column(db.Boolean, default=False, nullable=False)
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# ==========================================================================
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# 【修复】关系映射
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# 1. 属性名必须叫 'base'，因为 MaterialBase 里定义了 back_populates='base'
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# 2. back_populates 指向 MaterialBase 里的属性名 'stock_services'
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# ==========================================================================
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base = db.relationship('MaterialBase', back_populates='stock_services', lazy='joined')
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def to_dict(self):
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"""转为字典，用于 API 响应"""
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return {
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'id': self.id,
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'base_id': self.base_id,
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'sku': self.sku,
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'sale_price': float(self.sale_price) if self.sale_price is not None else 0,
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'provider_name': self.provider_name,
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'description': self.description,
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'actual_quantity': self.actual_quantity, # 返回库存数
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'available_quantity': self.available_quantity, # 返回可用数
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'created_at': self.created_at.strftime('%Y-%m-%d %H:%M:%S') if self.created_at else None,
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'updated_at': self.updated_at.strftime('%Y-%m-%d %H:%M:%S') if self.updated_at else None,
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# 注意：这里通过 self.base 访问关联对象，而不是 self.material_base
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'material_name': self.base.name if self.base else None,
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'spec_model': self.base.spec_model if self.base else None,
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'unit': self.base.unit if self.base else None,
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} |