rails form_for data-update-target ajax

_data-update-target.js

// http://mrdanadams.com/2011/partials-ajax-form-submit-rails/#.UWcy9kDCHsg
// http://stackoverflow.com/questions/18770517/rails-4-how-to-use-document-ready-with-turbo-links

$(document).on ('ajax:success', 'form[data-update-target], a[data-update-target]', function (evt, data) {
  var dom = $(data);
  $('#messages').html(dom.siblings('#messages:first').contents());

  var target = $(this).data('update-target');
  $('#' + target).html(dom.siblings('#body:first').contents());
});

$(document).on ('ajax:error', 'form[data-update-target], a[data-update-target]', function (evt, data) {
  //TODO $('#messages').html(error.responseText);
  $('#messages').text("An error has occurred.");
});

_messages.html.haml

- flash.each do |name, msg|
  - if msg.is_a?(String)
    - msg = [msg]
  - if msg.is_a? Array and not msg.empty?
    %div{:class => "alert alert-#{name == :notice ? "success" : "error"}"}
      %a.close{"data-dismiss" => "alert"} ×
      - msg.each do |msg|
        = content_tag :div, msg, :id => "flash_#{name}"

ajax.html.haml

#messages
  = render partial: 'shared/messages'

#body
  = yield

home_controller.rb

class HomeController < ApplicationController
  layout 'ajax', only: [:search]

  def search
     # ... do work
     render 'home/_search_results'
  end

query_form.html.haml

= form_for @query, url: { action: :search }, remote: true, html: { method: :get }, data: { update_target: 'results' } do |f|