fix: added merchant_id to printing_order and plate_order

api_v1/views/shipment/views.py

@@ -0,0 +1,78 @@
+"""
+Shipment API ViewSet
+"""
+from rest_framework import status
+from rest_framework.views import APIView
+from rest_framework.response import Response
+from rest_framework.permissions import IsAuthenticated
+
+from .serializers import SalesItemSerializer
+
+
+class SalesItemByPrintingOrderView(APIView):
+    """
+    通过生产订单查询销售品
+    
+    GET /api/v1/shipment/sales-items/by-printing-order/<printing_order_id>/
+    
+    返回与该 PrintingOrder 下所有 PrintingJob 关联的 SalesItem 列表。
+    
+    查询参数:
+    - include_already_has_shipment: 是否包含已关联出货单的销售品（true/false），默认 false
+    
+    返回:
+    {
+        "count": 5,
+        "results": [
+            {
+                "id": 1,
+                "name": "产品A",
+                "quantity": "100.00",
+                "unit": 1,
+                "unit_display": "米",
+                "position": "A1-01",
+                "remark": "",
+                "printing_job_id": 123,
+                "customer_id": null,
+                "shipment_id": null,
+                "shipment_date": null,
+                "created_at": "2026-01-14T10:00:00Z",
+                "created_by_id": 1,
+                "created_by_name": "张三"
+            },
+            ...
+        ]
+    }
+    """
+    permission_classes = [IsAuthenticated]
+    
+    def get(self, request, printing_order_id):
+        # 验证生产订单是否存在
+        from printing.models import PrintingOrder
+        try:
+            printing_order = PrintingOrder.objects.get(id=printing_order_id)
+        except PrintingOrder.DoesNotExist:
+            return Response(
+                {'detail': f'生产订单 {printing_order_id} 不存在'},
+                status=status.HTTP_404_NOT_FOUND
+            )
+        
+        # 获取查询参数
+        include_already_has_shipment = request.query_params.get(
+            'include_already_has_shipment', 'false'
+        ).lower() == 'true'
+        
+        # 调用 shipment 业务逻辑
+        from shipment.services import get_sales_items_by_printing_order
+        sales_items = get_sales_items_by_printing_order(
+            printing_order_id=printing_order.id,
+            include_already_has_shipment=include_already_has_shipment,
+        )
+        
+        # 序列化返回
+        serializer = SalesItemSerializer(sales_items, many=True)
+        
+        return Response({
+            'count': len(serializer.data),
+            'results': serializer.data
+        })