Ensure confirmation page respects custom get_admin_display_title methods

wagtail/admin/tests/pages/test_bulk_actions/test_bulk_move.py

@@ -71,11 +71,9 @@ class TestBulkMove(TestCase, WagtailTestUtils):
 
         self.assertInHTML('<p>Are you sure you want to move these pages?</p>', html)
 
-        for child_page in self.pages_to_be_moved:
-            self.assertInHTML('<li><a href="{edit_page_url}" target="_blank" rel="noopener noreferrer">{page_title}</a></li>'.format(
-                edit_page_url=reverse('wagtailadmin_pages:edit', args=[child_page.id]),
-                page_title=child_page.title
-            ), html)
+        self.assertInHTML('<li><a href="{edit_page_url}" target="_blank" rel="noopener noreferrer">Hello world! (simple page)</a></li>'.format(
+            edit_page_url=reverse('wagtailadmin_pages:edit', args=[self.test_page_b.id]),
+        ), html)
 
     def test_bulk_move_bad_permissions(self):
         # Remove privileges from user

wagtail/admin/tests/pages/test_bulk_actions/test_bulk_publish.py

@@ -50,6 +50,9 @@ class TestBulkPublish(TestCase, WagtailTestUtils):
         self.assertEqual(response.status_code, 200)
         self.assertTemplateUsed(response, 'wagtailadmin/pages/bulk_actions/confirm_bulk_publish.html')
 
+        # Page titles shown on the confirmation page should use SimplePage's custom get_admin_display_title method
+        self.assertContains(response, "Hello world!-1 (simple page)")
+
     def test_publish_view_invalid_page_id(self):
         """
         This tests that the publish view returns an error if the page id is invalid

wagtail/admin/views/pages/bulk_actions/page_bulk_action.py

@@ -28,6 +28,12 @@ class PageBulkAction(BulkAction):
 
         return listing_objects
 
+    def object_context(self, obj):
+        context = super().object_context(obj)
+        # Make 'item' into the specific instance, so that custom get_admin_display_title methods are respected
+        context['item'] = context['item'].specific_deferred
+        return context
+
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
         context['items_with_no_access'] = [