Bug fix for exporting SalesOrderAllocation data (#12463)

* Bug fix for exporting SalesOrderAllocation data

* Regression test

* Bump API version

* Bug fix for unit test

src/backend/InvenTree/InvenTree/api_version.py

@@ -1,11 +1,14 @@
 """InvenTree API version information."""
 
 # InvenTree API version
-INVENTREE_API_VERSION = 525
+INVENTREE_API_VERSION = 526
 """Increment this API version number whenever there is a significant change to the API that any clients need to know about."""
 
 INVENTREE_API_TEXT = """
 
+v526 -> 2026-07-24 : https://github.com/inventree/InvenTree/pull/12463
+    - Fix for data export on SalesOrderAllocation API endpoint
+
 v525 -> 2026-07-20 : https://github.com/inventree/InvenTree/pull/12409
     - Type clarifications for some fields; no functional changes
 

src/backend/InvenTree/order/api.py

@@ -1362,6 +1362,7 @@ class SalesOrderAllocationList(
     SalesOrderAllocationMixin,
     BulkDeleteMixin,
     BulkUpdateMixin,
+    DataExportViewMixin,
     OutputOptionsMixin,
     ListAPI,
 ):

src/backend/InvenTree/order/serializers.py

@@ -26,6 +26,7 @@ from company.serializers import (
     ContactSerializer,
     SupplierPartSerializer,
 )
+from data_exporter.mixins import DataExportSerializerMixin
 from generic.states.fields import InvenTreeCustomStatusSerializerMixin
 from importer.registry import register_importer
 from InvenTree.helpers import extract_serial_numbers, hash_barcode, normalize, str2bool
@@ -1543,7 +1544,7 @@ class SalesOrderShipmentSerializer(
 
 
 class SalesOrderAllocationSerializer(
-    FilterableSerializerMixin, InvenTreeModelSerializer
+    DataExportSerializerMixin, FilterableSerializerMixin, InvenTreeModelSerializer
 ):
     """Serializer for the SalesOrderAllocation model.
 

src/backend/InvenTree/order/test_api.py

@@ -2841,6 +2841,36 @@ class SalesOrderAllocateTest(OrderTest):
         response = self.post(self.url, data, expected_code=201)
 
 
+class SalesOrderAllocationDownloadTest(OrderTest):
+    """Unit tests for downloading SalesOrderAllocation data via the API endpoint."""
+
+    def test_download_csv(self):
+        """Test that SalesOrderAllocation data can be downloaded as a .csv file.
+
+        Regression test for a bug where the SalesOrderAllocation list endpoint
+        did not support data export.
+        """
+        url = reverse('api-so-allocation-list')
+
+        required_cols = ['ID', 'Item', 'Quantity', 'Shipment', 'Line', 'Part', 'Order']
+
+        with self.export_data(url, export_format='csv', expected_code=200) as file:
+            data = self.process_csv(
+                file,
+                required_cols=required_cols,
+                required_rows=SalesOrderAllocation.objects.count(),
+            )
+
+            for row in data:
+                allocation = SalesOrderAllocation.objects.get(pk=row['ID'])
+
+                self.assertEqual(row['Item'], str(allocation.item.pk))
+                self.assertEqual(float(row['Quantity']), float(allocation.quantity))
+                self.assertEqual(row['Line'], str(allocation.line.pk))
+                self.assertEqual(row['Part'], str(allocation.item.part.pk))
+                self.assertEqual(row['Order'], str(allocation.line.order.pk))
+
+
 class SalesOrderAllocateSerialsTest(OrderTest):
     """Unit tests for allocating stock items against a SalesOrder, by serial number."""