fix: printing api problem

api_v1/views/printing/serializers.py

@@ -2,6 +2,7 @@
 Printing API 序列化器
 """
 import json
+from django.core.exceptions import ObjectDoesNotExist
 from rest_framework import serializers
 from rest_framework.fields import empty
 
@@ -149,8 +150,8 @@ class PlateImageInputSerializer(serializers.Serializer):
 
 class PrintingOrderListSerializer(serializers.ModelSerializer):
     """印染订单列表序列化器"""
-    customer_name = serializers.CharField(source='customer.name', read_only=True)
-    customer_phone = serializers.CharField(source='customer.mobile', read_only=True)
+    customer_name = serializers.SerializerMethodField()
+    customer_phone = serializers.SerializerMethodField()
     process_name = serializers.CharField(source='process.name', read_only=True)
     progress = serializers.IntegerField(read_only=True)
     jobs_status_summary = serializers.SerializerMethodField()
@@ -177,6 +178,24 @@ class PrintingOrderListSerializer(serializers.ModelSerializer):
         ]
         read_only_fields = ['id', 'human_id', 'created_at', 'updated_at', 'progress', 'print_count', 'merchant_id']
 
+    def get_customer_name(self, obj):
+        if hasattr(obj, 'customer_name'):
+            return obj.customer_name
+        try:
+            customer = getattr(obj, 'customer', None)
+        except ObjectDoesNotExist:
+            return None
+        return getattr(customer, 'name', None)
+
+    def get_customer_phone(self, obj):
+        if hasattr(obj, 'customer_phone'):
+            return obj.customer_phone
+        try:
+            customer = getattr(obj, 'customer', None)
+        except ObjectDoesNotExist:
+            return None
+        return getattr(customer, 'mobile', None)
+
     def get_jobs_status_summary(self, obj):
         """
         返回订单下所有 PrintingJob 按当前状态分组的数量汇总

api_v1/views/printing/test_api.py

@@ -3,6 +3,7 @@ PrintingOrder API 测试
 """
 from datetime import datetime
 from django.test import TestCase
+from django.db import connection
 from django.conf import settings
 from django.utils import timezone
 from rest_framework.test import APIClient
@@ -170,6 +171,57 @@ class PrintingOrderAPITestCase(TestCase):
         # 分页响应格式
         self.assertEqual(response.data['count'], 2)
 
+    def test_list_pagination_keeps_rows_with_dangling_customer_reference(self):
+        """历史脏数据 customer_id 悬空时，列表分页不应被 INNER JOIN 推空。"""
+        base = timezone.now()
+        dangling = printing_models.PrintingOrder.objects.create(
+            merchant=self.merchant,
+            customer=self.customer,
+            fabric='悬空客户订单',
+            width='150cm',
+        )
+        middle = printing_models.PrintingOrder.objects.create(
+            merchant=self.merchant,
+            customer=self.customer,
+            fabric='中间订单',
+            width='150cm',
+        )
+        oldest = printing_models.PrintingOrder.objects.create(
+            merchant=self.merchant,
+            customer=self.customer,
+            fabric='最旧订单',
+            width='150cm',
+        )
+        printing_models.PrintingOrder.objects.filter(id=dangling.id).update(
+            created_at=base + timezone.timedelta(minutes=2),
+        )
+        printing_models.PrintingOrder.objects.filter(id=middle.id).update(
+            created_at=base + timezone.timedelta(minutes=1),
+        )
+        printing_models.PrintingOrder.objects.filter(id=oldest.id).update(created_at=base)
+
+        missing_customer_id = 99999999
+        with connection.cursor() as cursor:
+            cursor.execute(
+                'UPDATE printing_printingorder SET customer_id = %s WHERE id = %s',
+                [missing_customer_id, dangling.id],
+            )
+
+        try:
+            response = self.client.get(
+                '/api/v1/printing-orders/?limit=1&offset=2&ordering=-created_at',
+            )
+            self.assertEqual(response.status_code, status.HTTP_200_OK)
+            self.assertEqual(response.data['count'], 3)
+            self.assertEqual(len(response.data['results']), 1)
+            self.assertEqual(response.data['results'][0]['id'], oldest.id)
+        finally:
+            with connection.cursor() as cursor:
+                cursor.execute(
+                    'UPDATE printing_printingorder SET customer_id = %s WHERE id = %s',
+                    [self.customer.id, dangling.id],
+                )
+
     def test_list_printing_orders_default_excludes_invalid(self):
         """默认不返回作废订单；显式传 is_invalid=true 时可查询作废订单"""
         printing_models.PrintingOrder.objects.create(
@@ -443,6 +495,68 @@ class PrintingOrderAPITestCase(TestCase):
         self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
         self.assertIn('已经标记', response.data['detail'])
     
+    def _create_product_for_job(self, name='测试产品'):
+        category = basic_models.ProductCategory.objects.create(
+            merchant=self.merchant,
+            name=f'{name}类别',
+            product_prefix='JOB',
+        )
+        return basic_models.Product.objects.create(
+            merchant=self.merchant,
+            category=category,
+            name=name,
+            unit=basic_models.ProductUnitEnum.METER,
+        )
+
+    def test_printing_order_ids_returns_job_ids(self):
+        """测试获取订单下所有 PrintingJob ID。"""
+        order = printing_models.PrintingOrder.objects.create(
+            merchant=self.merchant,
+            customer=self.customer,
+            fabric='测试布料',
+            width='150cm',
+        )
+        product = self._create_product_for_job()
+        job1 = printing_models.PrintingJob.objects.create(
+            merchant=self.merchant,
+            printing_order=order,
+            product=product,
+            quantity=10,
+            unit='米',
+        )
+        job2 = printing_models.PrintingJob.objects.create(
+            merchant=self.merchant,
+            printing_order=order,
+            product=product,
+            quantity=20,
+            unit='米',
+        )
+
+        response = self.client.get(f'/api/v1/printing-orders/{order.id}/ids/')
+
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data, {'ids': [job1.id, job2.id]})
+
+    def test_printing_order_ids_returns_empty_list_when_no_jobs(self):
+        """订单存在但没有任务时返回空数组。"""
+        order = printing_models.PrintingOrder.objects.create(
+            merchant=self.merchant,
+            customer=self.customer,
+            fabric='测试布料',
+            width='150cm',
+        )
+
+        response = self.client.get(f'/api/v1/printing-orders/{order.id}/ids/')
+
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data, {'ids': []})
+
+    def test_printing_order_ids_returns_404_when_order_missing(self):
+        """订单不存在时返回 404。"""
+        response = self.client.get('/api/v1/printing-orders/99999999/ids/')
+
+        self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
+
     def test_filter_by_customer(self):
         """测试按客户过滤"""
         customer2 = basic_models.Customer.objects.create(

api_v1/views/printing/views.py

@@ -24,6 +24,7 @@ from datetime import datetime, time, timedelta
 
 from flower.viewsets import LimitedModelViewSet
 from printing import models
+from basic_info import models as basic_models
 from basic_info.models import MerchantTypeEnum
 
 from .serializers import (
@@ -301,8 +302,16 @@ class PrintingOrderViewSet(CustomerVisibilityFilterMixin, LimitedModelViewSet):
         ):
             queryset = queryset.filter(is_invalid=False)
 
-        if self.action in ["list", "retrieve", "by_external_order_id"]:
+        if self.action == "list":
+            customer_qs = basic_models.Customer.objects.filter(id=OuterRef("customer_id"))
+            queryset = queryset.annotate(
+                customer_name=Subquery(customer_qs.values("name")[:1]),
+                customer_phone=Subquery(customer_qs.values("mobile")[:1]),
+            )
+        elif self.action in ["retrieve", "by_external_order_id"]:
             queryset = queryset.select_related("customer")
+
+        if self.action in ["list", "retrieve", "by_external_order_id"]:
             # 预取 printing_jobs 及其 business_object，用于状态汇总统计
             # 同时预取 state_logs 和 process 相关数据以减少 job.status 属性调用时的 N+1 查询
             queryset = queryset.prefetch_related(
@@ -350,6 +359,15 @@ class PrintingOrderViewSet(CustomerVisibilityFilterMixin, LimitedModelViewSet):
         serializer = self.get_serializer(printing_order)
         return Response(serializer.data)
 
+    @action(detail=True, methods=["get"], url_path="ids")
+    def ids(self, request, pk=None):
+        """返回该印染订单下所有 PrintingJob ID。"""
+        printing_order = self.get_object()
+        ids = list(
+            printing_order.printing_jobs.order_by("id").values_list("id", flat=True)
+        )
+        return Response({"ids": ids})
+
     @action(detail=True, methods=["post"])
     def invalidate(self, request, pk=None):
         """