google_analytics_js helper function for Rails

application.html.haml

!!!
%html
  %head
    %title My Website
    
    // METADATA
    %meta{:charset => "utf-8"}
    %meta{:content => "initial-scale=1.0", :name => "viewport"}
    %meta{:content => "yes", :name => "apple-mobile-web-app-capable"}
    = csrf_meta_tags
    
    // FONTS
    %link{href: "//fonts.googleapis.com/css?family=Open+Sans:400,600,300,700", rel: "stylesheet", type: "text/css"}/
    
    // CSS
    = stylesheet_link_tag "application", :media => "all"
    
    // JS
    = javascript_include_tag "application"
    = google_analytics_js

application_helper.rb

  def google_analytics_js
    "<script type='text/javascript'>
    var _gaq = _gaq || [];
    _gaq.push(['_setAccount', 'UA-36991364-1']);
    _gaq.push(['_trackPageview']);

    (function() {
      var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
      ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
      var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
    })();
    </script>".html_safe
  end