demarches-normaliennes/app/services/render_partial_service.rb

class RenderPartialService
  attr_accessor :controller, :method

  def initialize controller, method
    @controller = controller
    @method = method
  end

  def navbar
    retrieve_navbar
  end

  def left_panel
    retrieve_left_panel
  end

  def self.left_panel_exist? left_panel_url
    file = left_panel_url.split('/').last

    File.exist?(Rails.root.join('app','views', 'layouts', 'left_panels', '_' + file + '.html.haml'))
  end

  private

  def retrieve_navbar
    'layouts/navbars/navbar_' + retrieve_name
  end

  def retrieve_left_panel
    'layouts/left_panels/left_panel_' + retrieve_name
  end

  def retrieve_name
    controller.to_s.parameterize.underscore + '_' + method.to_s
  end
end