物料-采购件入库页面功能实现
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176
inventory-backend/app/services/inbound/buy_service.py
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176
inventory-backend/app/services/inbound/buy_service.py
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from app.extensions import db
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from app.models.material import MaterialBase
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from app.models.stock import StockBuy
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from datetime import datetime
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import traceback
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class BuyInboundService:
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@staticmethod
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def handle_inbound(data):
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"""新增入库：自动关联/创建基础信息 + 创建库存记录"""
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try:
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# 0. 基础校验
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if not data.get('spec_model') or not data.get('material_name'):
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raise ValueError("缺少必要的物料名称或规格型号")
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# 1. 关联逻辑：通过规格型号(spec_model)查找基础库
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material = MaterialBase.query.filter_by(spec_model=data['spec_model']).first()
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# 如果不存在，则新建 MaterialBase
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if not material:
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material = MaterialBase(
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name=data['material_name'],
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spec_model=data['spec_model'],
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category=data.get('category'),
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material_type='采购件',
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unit=data.get('unit'),
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visibility_level=data.get('visibility_level', 0),
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manual_link=data.get('manual_link'),
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product_image=data.get('product_image'),
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is_enabled=True
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)
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db.session.add(material)
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db.session.flush() # 立即执行，拿到 material.id
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# 2. 处理日期 (兼容性处理)
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in_date_val = None
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if data.get('in_date'):
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try:
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in_date_val = datetime.strptime(data['in_date'], '%Y-%m-%d %H:%M:%S').date()
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except ValueError:
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try:
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in_date_val = datetime.strptime(data['in_date'], '%Y-%m-%d').date()
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except ValueError:
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in_date_val = datetime.utcnow().date()
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# 3. 创建 StockBuy
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new_stock = StockBuy(
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base_id=material.id,
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sku=data.get('sku'),
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in_date=in_date_val,
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serial_number=data.get('serial_number'),
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batch_number=data.get('batch_number'),
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status='在库',
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inspection_status=data.get('inspection_status'),
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in_quantity=data.get('in_quantity', 0),
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stock_quantity=data.get('in_quantity', 0),
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available_quantity=data.get('in_quantity', 0),
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warehouse_location=data.get('warehouse_location'),
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unit_price=data.get('unit_price', 0),
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total_price=data.get('total_price', 0),
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currency=data.get('currency', 'CNY'),
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exchange_rate=data.get('exchange_rate', 1.0),
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supplier_name=data.get('supplier_name'),
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buyer_name=data.get('buyer_name'),
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buyer_email=data.get('buyer_email'),
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original_link=data.get('original_link'),
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detail_link=data.get('detail_link'),
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arrival_photo=data.get('arrival_photo')
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)
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db.session.add(new_stock)
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db.session.commit()
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return new_stock
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except Exception as e:
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db.session.rollback()
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raise e
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@staticmethod
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def update_inbound(stock_id, data):
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"""更新入库：支持级联更新基础信息 + 自动重算总价"""
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try:
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stock = StockBuy.query.get(stock_id)
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if not stock:
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raise ValueError("记录不存在")
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# 1. 更新普通字段
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if 'serial_number' in data: stock.serial_number = data['serial_number']
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if 'batch_number' in data: stock.batch_number = data['batch_number']
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if 'warehouse_location' in data: stock.warehouse_location = data['warehouse_location']
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if 'supplier_name' in data: stock.supplier_name = data['supplier_name']
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if 'status' in data: stock.status = data['status']
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if 'inspection_status' in data: stock.inspection_status = data['inspection_status']
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if 'arrival_photo' in data: stock.arrival_photo = data['arrival_photo']
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if 'remark' in data: stock.remark = data['remark']
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# 2. 级联更新基础信息 (MaterialBase)
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if stock.material:
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if 'material_name' in data: stock.material.name = data['material_name']
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if 'category' in data: stock.material.category = data['category']
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if 'unit' in data: stock.material.unit = data['unit']
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# 3. 核心逻辑：数量与价格联动
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qty_changed = False
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price_changed = False
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# (A) 数量变更 -> 更新库存和可用量
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if 'in_quantity' in data:
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new_qty = float(data['in_quantity'])
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old_qty = float(stock.in_quantity)
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diff = new_qty - old_qty
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if diff != 0:
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stock.in_quantity = new_qty
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stock.stock_quantity = float(stock.stock_quantity) + diff
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stock.available_quantity = float(stock.available_quantity) + diff
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qty_changed = True
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# (B) 单价变更
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if 'unit_price' in data:
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new_price = float(data['unit_price'])
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if new_price != float(stock.unit_price):
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stock.unit_price = new_price
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price_changed = True
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# (C) 重算总价
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if qty_changed or price_changed:
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stock.total_price = float(stock.in_quantity) * float(stock.unit_price)
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db.session.commit()
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return stock
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except Exception as e:
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db.session.rollback()
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raise e
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@staticmethod
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def delete_inbound(stock_id):
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"""删除逻辑：孤儿策略（如果MaterialBase无其他引用则一并删除）"""
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try:
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stock = StockBuy.query.get(stock_id)
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if not stock:
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raise ValueError("记录不存在")
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# 1. 记下 base_id
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material_id = stock.base_id
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# 2. 删除库存记录
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db.session.delete(stock)
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db.session.flush()
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# 3. 检查是否还有残留
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remaining_count = StockBuy.query.filter_by(base_id=material_id).count()
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if remaining_count == 0:
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print(f"触发级联删除: MaterialBase ID {material_id} 已无关联，执行清理。")
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material = MaterialBase.query.get(material_id)
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if material:
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db.session.delete(material)
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db.session.commit()
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return True
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except Exception as e:
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db.session.rollback()
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print(f"删除失败: {e}")
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raise e
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@staticmethod
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def get_list(page, limit):
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try:
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pagination = StockBuy.query.order_by(StockBuy.id.desc()).paginate(page=page, per_page=limit)
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items = [item.to_dict() for item in pagination.items]
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return {"total": pagination.total, "items": items}
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except Exception as e:
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print(f"查询列表失败: {e}")
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return {"total": 0, "items": []}
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