config_generator.rb in mongoid-7.1.0.rc0

- old
+ new

@@ -1,6 +1,8 @@
+# frozen_string_literal: true
 # encoding: utf-8
+
 require 'rails/generators/mongoid_generator'
 
 module Mongoid
   module Generators
     class ConfigGenerator < Rails::Generators::Base
@@ -11,17 +13,10 @@
       def self.source_root
         @_mongoid_source_root ||= File.expand_path("../templates", __FILE__)
       end
 
       def app_name
-        app_cls = Rails.application.class
-        parent = begin
-          # Rails 6.1+
-          app_cls.module_parent_name
-        rescue NoMethodError
-          app_cls.parent.to_s
-        end
-        parent.underscore
+        Rails::Application.subclasses.first.parent.to_s.underscore
       end
 
       def create_config_file
         template 'mongoid.yml', File.join('config', "mongoid.yml")
       end