Adding bulk deletion endpoint for notifications (#3154)

* Catch DoesNotExist error

* Move notificationtable function to js file

* Fix for custom metadata class

- Previously only worked if a POST or PUT action was available on the endpoint
- So, a ListAPIView endpoint would not actually work!
- Adding in a BulkDelete mixin to a ListAPIView caused failure

* Add unit test to ensure new OPTIONS metadata updates are checked

* Expand functionality of the existing BulkDelete mixin

- Allow deletion by custom filters
- Allow each implementing class to implement custom filters
- Adds more unit testing for BulkDelete mixin class

* Add bulk delete operation for Notification API

- Ensure users can only delete their *own* notifications

* Improve notification tables / buttons / etc

* Adds unit testing for bulk delete of notifications

- Fixed API permissions for notifications list endpoint

* Update BulkDelete operations for the StockItemTestResult table

* Use filters parameter in attachments table to ensure that only correct attachments are deleted

* JS linting

* Fixes for unit tests

InvenTree/stock/templates/stock/item.html

@@ -280,9 +280,7 @@
 
                     // Ensure that we are only deleting the correct test results
                     response.forEach(function(result) {
-                        if (result.stock_item == {{ item.pk }}) {
-                            items.push(result.pk);
-                        }
+                        items.push(result.pk);
                     });
 
                     var html = `
@@ -293,6 +291,9 @@
                     constructForm(url, {
                         form_data: {
                             items: items,
+                            filters: {
+                                stock_item: {{ item.pk }},
+                            }
                         },
                         method: 'DELETE',
                         title: '{% trans "Delete Test Data" %}',

InvenTree/stock/test_api.py

@@ -968,10 +968,28 @@ class StockTestResultTest(StockAPITestCase):
         )
 
         # Now, let's delete all the newly created items with a single API request
+        # However, we will provide incorrect filters
         response = self.delete(
             url,
             {
                 'items': tests,
+                'filters': {
+                    'stock_item': 10,
+                }
+            },
+            expected_code=204
+        )
+
+        self.assertEqual(StockItemTestResult.objects.count(), n + 50)
+
+        # Try again, but with the correct filters this time
+        response = self.delete(
+            url,
+            {
+                'items': tests,
+                'filters': {
+                    'stock_item': 1,
+                }
             },
             expected_code=204
         )