Controller extension

controller.rb

<% if namespaced? -%>
require_dependency "<%= namespaced_path %>/application_controller"

<% end -%>
<% module_namespacing do -%>
class <%= class_name %>Controller < CustomController
<% actions.each do |action| -%>
def <%= action %>
end
<%= "\n" unless action == actions.last -%>
<% end -%>
end
<% end -%>

custom_controller.rb

require 'rails/generators/rails/controller/controller_generator'

class CustomControllerGenerator < Rails::Generators::ControllerGenerator
  source_root File.expand_path('../templates', __FILE__)
end