[OSDEV-1563] Fix updating of the moderation decision date after moderation event approval.

doc/release/RELEASE-NOTES.md

@@ -27,6 +27,7 @@ This project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html
 * [OSDEV-1532](https://opensupplyhub.atlassian.net/browse/OSDEV-1532) - Fixed the date range picker on the `Moderation Queue` page. A Data Moderator can change the Before date even if an Error message is displayed.
 * [OSDEV-1533](https://opensupplyhub.atlassian.net/browse/OSDEV-1533) - The presentation of the `Moderation Decision Date` in the `Moderation Queue` table has been corrected. If the "status_change_date" is missing in the object, it now displays as "N/A".
 * [OSDEV-1556](https://opensupplyhub.atlassian.net/browse/OSDEV-1556) - Fixed validation of `os_id` for PATCH `/api/v1/moderation-events/{moderation_id}/production-locations/{os_id}/` endpoint.
+* [OSDEV-1563](https://opensupplyhub.atlassian.net/browse/OSDEV-1563) - Fixed updating of the moderation decision date after moderation event approval.
 
 ### What's new
 * [OSDEV-1376](https://opensupplyhub.atlassian.net/browse/OSDEV-1376) - Updated automated emails for closure reports (report_result) to remove the term "Rejected" for an improved user experience. Added link to Closure Policy and instructions for submitting a Reopening Report to make the process easier to understand for users.

src/django/api/moderation_event_actions/approval/event_approval_template.py

@@ -271,6 +271,7 @@ def __create_facility_match_record(
     @staticmethod
     def _update_event(event: ModerationEvent, item: FacilityListItem) -> None:
         event.status = ModerationEvent.Status.APPROVED
+        event.status_change_date = timezone.now()
         event.os_id = item.facility_id
         event.save()
 

src/django/api/tests/base_moderation_events_production_location_test.py

@@ -153,6 +153,7 @@ def assert_success_response(self, response, status_code):
             uuid=self.moderation_event_id
         )
         self.assertEqual(moderation_event.status, 'APPROVED')
+        self.assertIsNotNone(moderation_event.status_change_date)
         self.assertEqual(moderation_event.os_id, response.data["os_id"])
 
     def assert_source_creation(self, source):