I would like only add my own editor without to redefine a default one. (#6118)

CHANGELOG.txt

@@ -40,6 +40,7 @@ Changelog
  * Apply title length normalisation to improve ranking on PostgreSQL search (Karl Hobley)
  * Add `WAGTAIL_TIME_FORMAT` setting (Jacob Topp-Mugglestone)
  * Add ability to import redirects from an uploaded file (CSV, TSV, XLS, and XLSX) (Martin Sandström)
+ * Allow omitting the default editor from `WAGTAILADMIN_RICH_TEXT_EDITORS` (Gassan Gousseinov)
  * Fix: Support IPv6 domain (Alex Gleason, Coen van der Kamp)
  * Fix: Ensure link to add a new user works when no users are visible in the users list (LB (Ben Johnston))
  * Fix: `AbstractEmailForm` saved submission fields are now aligned with the email content fields, `form.cleaned_data` will be used instead of `form.fields` (Haydn Greatnews)

docs/reference/settings.rst

@@ -520,6 +520,12 @@ Customise the behaviour of rich text fields. By default, ``RichTextField`` and `
 
  * ``OPTIONS``: Configuration options to pass to the widget. Recognised options are widget-specific, but both ``DraftailRichTextArea`` and ``HalloRichTextArea`` accept a ``features`` list indicating the active rich text features (see :ref:`rich_text_features`).
 
+If a ``'default'`` editor is not specified, rich text fields that do not specify an ``editor`` argument will use the Draftail editor with the default feature set enabled.
+
+.. versionchanged:: 2.10
+
+    Omitting the ``'default'`` editor now leaves the original default editor intact, so it is no longer necessary to redefine ``'default'`` when adding alternative editors.
+
 
 .. _WAGTAILADMIN_GLOBAL_PAGE_EDIT_LOCK:
 

docs/releases/2.10.rst

@@ -53,6 +53,7 @@ Other features
  * Add ``WAGTAIL_TIME_FORMAT`` setting (Jacob Topp-Mugglestone)
  * Apply title length normalisation to improve ranking on PostgreSQL search (Karl Hobley)
  * Add ability to import redirects from an uploaded file (CSV, TSV, XLS, and XLSX) (Martin Sandström)
+ * Allow omitting the default editor from ``WAGTAILADMIN_RICH_TEXT_EDITORS`` (Gassan Gousseinov)
 
 
 Bug fixes

wagtail/admin/rich_text/__init__.py

@@ -15,7 +15,8 @@ DEFAULT_RICH_TEXT_EDITORS = {
 
 
 def get_rich_text_editor_widget(name='default', features=None):
-    editor_settings = getattr(settings, 'WAGTAILADMIN_RICH_TEXT_EDITORS', DEFAULT_RICH_TEXT_EDITORS)
+    editor_settings = DEFAULT_RICH_TEXT_EDITORS.copy()
+    editor_settings.update(getattr(settings, 'WAGTAILADMIN_RICH_TEXT_EDITORS', {}))
 
     editor = editor_settings[name]
     options = editor.get('OPTIONS', None)

wagtail/admin/tests/test_rich_text.py

@@ -68,6 +68,7 @@ class TestGetRichTextEditorWidget(TestCase):
         },
     })
     def test_custom_editor_without_default(self):
+        self.assertIsInstance(get_rich_text_editor_widget(), DraftailRichTextArea)
         self.assertIsInstance(get_rich_text_editor_widget('custom'), CustomRichTextArea)
 
     @override_settings(WAGTAILADMIN_RICH_TEXT_EDITORS={