fix: added permission for plate_order and printing_order api

shipment/services.py

@@ -3,9 +3,12 @@ Shipment 模块业务逻辑层
 """
 from __future__ import annotations
 
+from typing import List
+
+from django.db import transaction
 from django.db.models import QuerySet
 
-from shipment.models import SalesItem
+from shipment.models import SalesItem, Shipment
 
 
 def get_sales_items_by_printing_order(
@@ -37,3 +40,66 @@ def get_sales_items_by_printing_order(
         queryset = queryset.filter(shipment__isnull=True)
     
     return queryset.select_related('shipment').order_by('id')
+
+
+@transaction.atomic
+def create_shipment(
+    customer_id: int,
+    shipment_date,
+    sales_item_ids: List[int],
+    created_by,
+    remark: str = '',
+) -> Shipment:
+    """
+    创建出货单并关联销售品
+    
+    Args:
+        customer_id: 客户ID
+        shipment_date: 出货日期
+        sales_item_ids: 要关联的销售品ID列表
+        created_by: 创建人
+        remark: 备注
+        
+    Returns:
+        创建的 Shipment 实例
+        
+    Raises:
+        ValueError: 如果销售品不存在或已被关联到其他出货单
+    """
+    from basic_info.models import Customer
+    
+    # 验证客户存在
+    try:
+        customer = Customer.objects.get(id=customer_id)
+    except Customer.DoesNotExist:
+        raise ValueError(f'客户 {customer_id} 不存在')
+    
+    # 验证销售品
+    if sales_item_ids:
+        # 查询销售品
+        sales_items = SalesItem.objects.filter(id__in=sales_item_ids)
+        found_ids = set(sales_items.values_list('id', flat=True))
+        missing_ids = set(sales_item_ids) - found_ids
+        
+        if missing_ids:
+            raise ValueError(f'以下销售品不存在: {list(missing_ids)}')
+        
+        # 检查是否有已关联出货单的销售品
+        already_shipped = sales_items.filter(shipment__isnull=False)
+        if already_shipped.exists():
+            shipped_ids = list(already_shipped.values_list('id', flat=True))
+            raise ValueError(f'以下销售品已关联到其他出货单: {shipped_ids}')
+    
+    # 创建出货单
+    shipment = Shipment.objects.create(
+        customer=customer,
+        shipment_date=shipment_date,
+        remark=remark,
+        created_by=created_by,
+    )
+    
+    # 关联销售品
+    if sales_item_ids:
+        SalesItem.objects.filter(id__in=sales_item_ids).update(shipment=shipment)
+    
+    return shipment