getting turbolinks to play nice with FB SDK

turbolinks_fb.js

(function(){
  var fb_root;

  $(document).on('page:fetch', function(){
    // store a ref to the fb-root element before changing the page
    fb_root = $("#fb-root");
  });

  $(document).on('page:change', function(){
    // put back the fb-root element
    if(fb_root) $('#fb-root').replaceWith(fb_root);
  });

})();