convert_options_to_data_attributes

# File actionpack/lib/action_view/helpers/url_helper.rb, line 616
        def convert_options_to_data_attributes(options, html_options)
          if html_options
            html_options = html_options.stringify_keys
            html_options['data-remote'] = 'true' if link_to_remote_options?(options) || link_to_remote_options?(html_options)

            disable_with = html_options.delete("disable_with")
            confirm = html_options.delete('confirm')
            method  = html_options.delete('method')

            html_options["data-disable-with"] = disable_with if disable_with
            html_options["data-confirm"] = confirm if confirm
            add_method_to_attributes!(html_options, method)   if method

            html_options
          else
            link_to_remote_options?(options) ? {'data-remote' => 'true'} : {}
          end
        end