Render a complete page in rails 5 without controller

call_template.rb

# create the template
template = PageOfflineTemplate.new
template.quote = quote
template.pages = quote.build_pages
        
# Here I render a template with layout to a string then a PDF
pdf = PDFKit.new template.render_to_string(:template=>"quotes/review.html.haml")
        

offline_template.rb

class OfflineTemplate < AbstractController::Base
  include AbstractController::Logger
  include AbstractController::Rendering
  include ActionView::Layouts
  include AbstractController::Helpers
  include AbstractController::Translation
  include AbstractController::AssetPaths
  include ActionDispatch::Routing::UrlFor
  include Rails.application.routes.url_helpers
  Rails.application.routes.default_url_options = Rails.application.config.action_mailer.default_url_options

  helper ApplicationHelper

  helper_method :protect_against_forgery?

  # configure the different paths correctly
  def initialize(*_args)
    super
    lookup_context.view_paths = Rails.root.join('app', 'views')
    config.javascripts_dir = Rails.root.join('public', 'javascripts')
    config.stylesheets_dir = Rails.root.join('public', 'stylesheets')
    config.assets_dir = Rails.root.join('public')
  end

  # we are not in a browser, no need for this
  def protect_against_forgery?
    false
  end

  # so that your flash calls still work
  def flash
    {}
  end

  def params
    {}
  end

  def controller_name
    'offline'
  end

  # same asset host as the controllers
  self.asset_host = ActionController::Base.asset_host
end

page_offline_template.rb

# subclass to define the @ attributes your tempalte will use
class PageOfflineTemplate < OfflineTemplate
  attr_accessor :pages, :quote, :invoice, :quotes, :mat_pages, :wo_pages, :exp_pages
end