fix

api_v1/views/printing/test_printing_job_api.py

@@ -1198,3 +1198,32 @@ class PrintingJobAPITestCase(TestCase):
         result = response.data['results'][0]
         self.assertIn('product_image_url', result)
         self.assertIsNone(result['product_image_url'])
+
+    def test_list_printing_jobs_product_image_url_fallback_to_local_image(self):
+        """测试产品图片 URL fallback 到本地 image 字段"""
+        from django.core.files.uploadedfile import SimpleUploadedFile
+        
+        # 确保 mdy_image_url 和 description 都为空
+        self.product.mdy_image_url = None
+        self.product.description = None
+        # 设置本地图片（模拟已上传的文件路径）
+        self.product.image = 'product_images/test_product.jpg'
+        self.product.save()
+        
+        job = printing_models.PrintingJob.objects.create(
+            printing_order=self.printing_order,
+            product=self.product,
+            quantity=100,
+            unit='米',
+            size='50*60',
+            pieces=10
+        )
+        
+        response = self.client.get('/api/v1/printing-jobs/')
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        
+        # 验证 product_image_url 字段存在且包含本地图片路径
+        result = response.data['results'][0]
+        self.assertIn('product_image_url', result)
+        self.assertIsNotNone(result['product_image_url'])
+        self.assertIn('product_images/test_product.jpg', result['product_image_url'])