feat: printing orders and jobs filter with external_order_id

api_v1/views/printing/test_printing_job_api.py

@@ -491,6 +491,45 @@ class PrintingJobAPITestCase(TestCase):
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         self.assertEqual(response.data['count'], 1)
         self.assertEqual(response.data['results'][0]['product'], self.product.id)
+
+    def test_filter_by_external_order_id_and_serializer_field(self):
+        """测试按所属订单 external_order_id 过滤，并返回该字段"""
+        self.printing_order.external_order_id = 'KD20410611'
+        self.printing_order.save(update_fields=['external_order_id'])
+
+        job = printing_models.PrintingJob.objects.create(
+            printing_order=self.printing_order,
+            product=self.product,
+            quantity=100,
+            unit='米',
+            size='50*60',
+            pieces=10
+        )
+
+        other_order = printing_models.PrintingOrder.objects.create(
+            customer=self.customer,
+            fabric='其他布料',
+            width='160cm',
+            external_order_id='KD20419999'
+        )
+        printing_models.PrintingJob.objects.create(
+            printing_order=other_order,
+            product=self.product,
+            quantity=200,
+            unit='米',
+            size='60*70',
+            pieces=20
+        )
+
+        response = self.client.get('/api/v1/printing-jobs/?external_order_id=KD20410611')
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data['count'], 1)
+        self.assertEqual(response.data['results'][0]['id'], job.id)
+        self.assertEqual(response.data['results'][0]['external_order_id'], 'KD20410611')
+
+        detail = self.client.get(f'/api/v1/printing-jobs/{job.id}/')
+        self.assertEqual(detail.status_code, status.HTTP_200_OK)
+        self.assertEqual(detail.data['external_order_id'], 'KD20410611')
     
     def test_filter_by_quantity_range(self):
         """测试按数量范围过滤"""