Pass last updated info from the view to the status side panel via __init__

wagtail/admin/ui/side_panels.py

@@ -72,6 +72,7 @@ class BaseStatusSidePanel(BaseSidePanel):
         translations=None,
         usage_url=None,
         history_url=None,
+        live_last_updated_info=None,
         **kwargs,
     ):
         super().__init__(*args, **kwargs)
@@ -82,6 +83,7 @@ class BaseStatusSidePanel(BaseSidePanel):
         self.translations = translations
         self.usage_url = usage_url
         self.history_url = history_url
+        self.live_last_updated_info = live_last_updated_info
         self.locking_enabled = isinstance(self.object, LockableMixin)
 
     def get_status_templates(self, context):
@@ -222,6 +224,7 @@ class BaseStatusSidePanel(BaseSidePanel):
         context["base_model_name"] = context["model_name"]
         context["history_url"] = self.history_url
         context["status_templates"] = self.get_status_templates(context)
+        context["live_last_updated_info"] = self.live_last_updated_info
         context.update(self.get_scheduled_publishing_context(parent_context))
         context.update(self.get_lock_context(parent_context))
         if self.object.pk:

wagtail/admin/views/generic/mixins.py

@@ -671,7 +671,6 @@ class CreateEditViewOptionalFeaturesMixin:
         context["revision_enabled"] = self.revision_enabled
         context["draftstate_enabled"] = self.draftstate_enabled
         context["workflow_enabled"] = self.workflow_enabled
-        context["live_last_updated_info"] = self.get_live_last_updated_info()
         context["workflow_history_url"] = self.get_workflow_history_url()
         context[
             "confirm_workflow_cancellation_url"

wagtail/snippets/side_panels.py

@@ -10,7 +10,6 @@ class SnippetStatusSidePanel(BaseStatusSidePanel):
             "revisions_compare_url_name",
             "revision_enabled",
             "draftstate_enabled",
-            "live_last_updated_info",
             "lock_url",
             "unlock_url",
             "user_can_lock",

wagtail/snippets/views/snippets.py

@@ -331,6 +331,7 @@ class EditView(generic.CreateEditViewOptionalFeaturesMixin, generic.EditView):
                 translations=self.translations,
                 usage_url=self.get_usage_url(),
                 history_url=self.get_history_url(),
+                live_last_updated_info=self.get_live_last_updated_info(),
             )
         ]
         if self.preview_enabled and self.object.is_previewable():