73 lines
3.2 KiB
Python
73 lines
3.2 KiB
Python
# inventory-backend/app/models/inbound/service.py
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from app.extensions import db, beijing_time
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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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说明：服务权益通常为虚拟资产，不进行具体的库存数量(actual_quantity)管理
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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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# 外键关联基础物料
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base_id = db.Column(db.Integer, db.ForeignKey('material_base.id'), nullable=False)
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# 核心业务字段
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sku = db.Column(db.String(100), unique=True, nullable=False)
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# 扩展字段 (对应您的数据库建表脚本)
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service_category = db.Column(db.String(100), comment='服务类别')
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provider_name = db.Column(db.String(255), nullable=False, default='')
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contract_id = db.Column(db.String(100), comment='合同号')
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contact_person = db.Column(db.String(100), comment='联系人')
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# 价格相关
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cost_price = db.Column(db.Numeric(19, 4), default=0)
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sale_price = db.Column(db.Numeric(19, 4), nullable=False, default=0)
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# 描述与状态
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description = db.Column(db.Text, default='')
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valid_period = db.Column(db.String(100), comment='有效期')
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status = db.Column(db.String(20), default='active')
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# 时间与系统字段
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created_at = db.Column(db.DateTime, default=beijing_time, nullable=False)
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updated_at = db.Column(db.DateTime, default=beijing_time, onupdate=beijing_time)
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is_deleted = db.Column(db.Boolean, default=False)
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# ==========================================================================
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# 关联关系设置
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# MaterialBase 中定义了 back_populates='stock_services'
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# 因此这里必须定义 base 属性指向 'stock_services'
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# ==========================================================================
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base = db.relationship('MaterialBase', back_populates='stock_services')
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def to_dict(self):
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"""序列化为字典"""
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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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'service_category': self.service_category,
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'provider_name': self.provider_name,
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'contract_id': self.contract_id,
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'contact_person': self.contact_person,
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'sale_price': float(self.sale_price) if self.sale_price is not None else 0,
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'cost_price': float(self.cost_price) if self.cost_price is not None else 0,
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'description': self.description,
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'valid_period': self.valid_period,
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'status': self.status,
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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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# 关联的基础信息 (Flattened)
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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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'category': self.base.category if self.base else None,
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'material_type': self.base.material_type if self.base else None,
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} |