Overriding a default template path

gistfile1.rb

class MassEmailsController < InheritedResources::Base
  before_filter :prefix_template

  private

    def prefix_template 
      def self.default_template_name(action_name = self.action_name)
        if action_name
          action_name = action_name.to_s
          if action_name.include?('/') && template_path_includes_controller?(action_name)
            action_name = strip_out_controller(action_name)
          end
        end
        "admin/#{self.controller_path}/#{action_name}"
      end
    end
end