Default Wagtail model registration

wagtail/apps.py

@@ -1,4 +1,4 @@
-from django.apps import AppConfig
+from django.apps import AppConfig, apps
 from django.utils.translation import gettext_lazy as _
 
 
@@ -9,6 +9,13 @@ class WagtailAppConfig(AppConfig):
     default_auto_field = "django.db.models.AutoField"
 
     def ready(self):
+        from wagtail.models import AbstractPage
+        from wagtail.models.reference_index import ReferenceIndex
+
+        for model in apps.get_models():
+            if issubclass(model, AbstractPage):
+                ReferenceIndex.register_model(model)
+
         from wagtail.signal_handlers import register_signal_handlers
 
         register_signal_handlers()

wagtail/contrib/modeladmin/options.py

@@ -12,7 +12,7 @@ from wagtail.admin.admin_url_finder import register_admin_url_finder
 from wagtail.admin.checks import check_panels_in_model
 from wagtail.admin.menu import Menu
 from wagtail.admin.panels import ObjectList, extract_panel_definitions_from_model_class
-from wagtail.models import Page, TranslatableMixin
+from wagtail.models import Page, ReferenceIndex, TranslatableMixin
 
 from .helpers import (
     AdminURLHelper,
@@ -82,9 +82,14 @@ class WagtailRegisterable:
 
         self.register_admin_url_finders()
 
+        self.register_indexing()
+
     def register_admin_url_finders(self):
         pass
 
+    def register_indexing(self):
+        pass
+
     def will_modify_explorer_page_queryset(self):
         return False
 
@@ -669,6 +674,9 @@ class ModelAdmin(WagtailRegisterable):
             )
             register_admin_url_finder(self.model, finder_class)
 
+    def register_indexing(self):
+        ReferenceIndex.register_model(self.model)
+
 
 class ModelAdminGroup(WagtailRegisterable):
     """
@@ -776,6 +784,10 @@ class ModelAdminGroup(WagtailRegisterable):
         for instance in self.modeladmin_instances:
             instance.register_admin_url_finders()
 
+    def register_indexing(self):
+        for instance in self.modeladmin_instances:
+            instance.register_indexing()
+
 
 def modeladmin_register(modeladmin_class):
     """

wagtail/documents/apps.py

@@ -12,3 +12,8 @@ class WagtailDocsAppConfig(AppConfig):
         from wagtail.documents.signal_handlers import register_signal_handlers
 
         register_signal_handlers()
+
+        from wagtail.documents import get_document_model
+        from wagtail.models.reference_index import ReferenceIndex
+
+        ReferenceIndex.register_model(get_document_model())

wagtail/images/apps.py

@@ -35,3 +35,7 @@ class WagtailImagesAppConfig(AppConfig):
         register_comparison_class(
             ForeignKey, to=Image, comparison_class=ImageFieldComparison
         )
+
+        from wagtail.models.reference_index import ReferenceIndex
+
+        ReferenceIndex.register_model(get_image_model())

wagtail/snippets/models.py

@@ -10,7 +10,7 @@ from django.utils.module_loading import import_string
 
 from wagtail.admin.viewsets import viewsets
 from wagtail.hooks import search_for_hooks
-from wagtail.models import DraftStateMixin, LockableMixin, WorkflowMixin
+from wagtail.models import DraftStateMixin, LockableMixin, ReferenceIndex, WorkflowMixin
 
 SNIPPET_MODELS = []
 
@@ -127,6 +127,8 @@ def register_snippet_viewset(viewset):
     SNIPPET_MODELS.append(model)
     SNIPPET_MODELS.sort(key=lambda x: x._meta.verbose_name)
 
+    ReferenceIndex.register_model(model)
+
 
 def register_deferred_snippets():
     """