连锁药店进存销管理系统进货管理模块crud具体代码

以下是可能的连锁药店进存销管理系统进货管理模块的代码示例：

1. 创建进货单

class PurchaseOrder:
    def __init__(self, supplier, items):
        self.supplier = supplier
        self.items = items
        self.status = 'created'
        self.total_price = sum([item.price * item.quantity for item in self.items])
        self.date_created = datetime.datetime.now()

    def submit(self):
        # 提交进货单
        self.status = 'submitted'
        # 发送通知给仓库管理员等

2. 创建进货单条目

class PurchaseOrderItem:
    def __init__(self, product, quantity):
        self.product = product
        self.quantity = quantity
        self.price = product.purchase_price

3. 实现进货单的CRUD操作

class PurchaseOrderService:
    def create_purchase_order(self, supplier, items):
        po = PurchaseOrder(supplier, items)
        # 保存进货单到数据库
        return po
    
    def get_purchase_order(self, id):
        # 从数据库中获取进货单
        return po
    
    def update_purchase_order(self, id, supplier=None, items=None):
        po = self.get_purchase_order(id)
        if supplier:
            po.supplier = supplier
        if items:
            po.items = items
            po.total_price = sum([item.price * item.quantity for item in items])
        # 保存更新后的进货单到数据库
        return po
    
    def delete_purchase_order(self, id):
        # 从数据库中删除进货单

4. 实现进货单审批流程

class PurchaseOrderWorkflow:
    def __init__(self, purchase_order):
        self.purchase_order = purchase_order

    def approve(self):
        # 审批通过
        self.purchase_order.status = 'approved'

    def reject(self):
        # 审批拒绝
        self.purchase_order.status = 'rejected'

5. 实现进货单的通知功能

class NotificationService:
    def send_purchase_order_notification(self, purchase_order):
        # 发送进货单通知给仓库管理员等

以上代码只是一个简单的示例，实际的进货管理模块可能会更加复杂，需要根据具体业务需求进行设计和开发。