Exclude `latest_revision` when creating a page alias

- Fix alias of draft page for non-primary locale showing links to the incorrect edit form
- Fixes #13090
- Relates to #13100

CHANGELOG.txt

@@ -65,6 +65,7 @@
  * Fix: Make sure the label of panel collapse buttons is translatable (Thibaud Colas)
  * Fix: Ensure there is suitable padding for large numbers on pagination within universal listings (M. Sumair Khokhar)
  * Fix: Use the correct localized format utils in the `human_readable_date` template tag (Seb Corbin)
+ * Fix: Ensure the editing of translation alias pages correctly shows links to the source page if the alias was created from a draft (Dan Braghis)
  * Docs: Add missing tag library imports to footer template code in tutorial (Dimaco)
  * Docs: Improve documentation around securing user-uploaded files (Jake Howard)
  * Docs: Introduce search_fields in a dedicated tutorial section instead of the introduction (Matt Westcott)

docs/releases/7.1.md

@@ -109,6 +109,7 @@ For more details, see the documentation on [enabling the user bar](headless_user
  * Make sure the label of panel collapse buttons is translatable (Thibaud Colas)
  * Ensure there is suitable padding for large numbers on pagination within universal listings (M. Sumair Khokhar)
  * Use the correct localized format utils in the `human_readable_date` template tag (Seb Corbin)
+ * Ensure the editing of translation alias pages correctly shows links to the source page if the alias was created from a draft (Dan Braghis)
 
 ### Documentation
 

wagtail/actions/create_alias.py

@@ -120,6 +120,7 @@ class CreatePageAliasAction:
             "path",
             "index_entries",
             "postgres_index_entries",
+            "latest_revision",  # for page aliases do not have revisions
         ]
 
         update_attrs = {

wagtail/admin/tests/pages/test_edit_page.py

@@ -2139,6 +2139,31 @@ class TestPageEdit(WagtailTestUtils, TestCase):
             html=True,
         )
 
+    def test_edit_alias_page_from_draft_page(self):
+        # Ensure we have at least one revision. This is what happens when creating
+        # a page via the admin. It is stored as latest_revision
+        self.unpublished_page.save_revision()
+        alias_page = self.unpublished_page.create_alias(update_slug="an-alias-page")
+        response = self.client.get(
+            reverse("wagtailadmin_pages:edit", args=[alias_page.id])
+        )
+
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response["Content-Type"], "text/html; charset=utf-8")
+
+        self.assertNotContains(response, 'id="status-sidebar-live"')
+
+        # Check the edit_alias.html template was used instead
+        self.assertTemplateUsed(response, "wagtailadmin/pages/edit_alias.html")
+        original_page_edit_url = reverse(
+            "wagtailadmin_pages:edit", args=[self.unpublished_page.id]
+        )
+        self.assertContains(
+            response,
+            f'<a class="button button-secondary" href="{original_page_edit_url}">Edit original page</a>',
+            html=True,
+        )
+
     def test_post_edit_alias_page(self):
         alias_page = self.child_page.create_alias(update_slug="new-child-page")