module <%= class_name %>
  module DisplayNameGlipper
    extend ActiveSupport::Concern

    def blank_display_name
      self.blank_display_name_backward
    end

    def blank_display_name_backward
      self.blank_display_name_assumption ? resource.public_send(self.blank_display_name_assumption) : self.blank_display_name_default
    end

    def blank_display_name_assumptions
      %w{full_name name title subject}
    end

    def blank_display_name_assumption
      Array.wrap(self.blank_display_name_assumptions).find do |method_name|
        resource.respond_to?(method_name) && resource.public_send(method_name).presence
      end
    end

    def blank_display_name_default
      o.id ? "#{resource.class.model_name.human} #{resource.id}" : "New #{resource.class.model_name.human}"
    end

    def display_name(options={})
      self.blank_display_name
    end

  end
end