Merge pull request rails#46120 from rails/rescue-template-paths

Keep rescue template paths in an array

Author: tenderlove

actionpack/lib/action_dispatch/middleware/debug_view.rb

@@ -7,10 +7,10 @@
 
 module ActionDispatch
   class DebugView < ActionView::Base # :nodoc:
-    RESCUES_TEMPLATE_PATH = File.expand_path("templates", __dir__)
+    RESCUES_TEMPLATE_PATHS = [File.expand_path("templates", __dir__)]
 
     def initialize(assigns)
-      paths = [RESCUES_TEMPLATE_PATH]
+      paths = RESCUES_TEMPLATE_PATHS.dup
       lookup_context = ActionView::LookupContext.new(paths)
       super(lookup_context, assigns, nil)
     end

railties/lib/rails/info_controller.rb

@@ -4,7 +4,7 @@
 require "action_dispatch/routing/inspector"
 
 class Rails::InfoController < Rails::ApplicationController # :nodoc:
-  prepend_view_path ActionDispatch::DebugView::RESCUES_TEMPLATE_PATH
+  prepend_view_path ActionDispatch::DebugView::RESCUES_TEMPLATE_PATHS
   layout -> { request.xhr? ? false : "application" }
 
   before_action :require_local!

railties/lib/rails/mailers_controller.rb

@@ -3,7 +3,7 @@
 require "rails/application_controller"
 
 class Rails::MailersController < Rails::ApplicationController # :nodoc:
-  prepend_view_path ActionDispatch::DebugView::RESCUES_TEMPLATE_PATH
+  prepend_view_path ActionDispatch::DebugView::RESCUES_TEMPLATE_PATHS
 
   around_action :set_locale, only: [:preview, :download]
   before_action :find_preview, only: [:preview, :download]