feat: added plate order clone

api_v1/views/printing/views.py

@@ -8,7 +8,7 @@ from rest_framework.permissions import BasePermission
 from rest_framework.pagination import LimitOffsetPagination
 from rest_framework.permissions import DjangoModelPermissions
 from rest_framework.parsers import MultiPartParser, FormParser, JSONParser
-from django.db.models import CharField
+from django.db.models import CharField, Prefetch
 from django.db.models.functions import Cast, Coalesce
 from django_filters.rest_framework import DjangoFilterBackend
 from django_filters import rest_framework as django_filters
@@ -306,6 +306,14 @@ class PrintingJobViewSet(viewsets.ModelViewSet):
         queryset = super().get_queryset()
         if self.action in ['list', 'retrieve']:
             queryset = queryset.select_related('printing_order', 'product')
+            # 预取批量推进记录（避免 serializer 产生 N+1）
+            queryset = queryset.prefetch_related(
+                Prefetch(
+                    'batch_advance_records',
+                    queryset=models.PrintingJobBatchAdvanceRecord.objects.select_related('state', 'created_by')
+                    .order_by('-created_at', '-id'),
+                )
+            )
         return queryset
     
     def destroy(self, request, *args, **kwargs):