Adding book titles to content urls

I've added the book title to the end of the url, after the content id and version, but before the page number. I created a function in node.coffee that splits and joins the words in the title by an underscore and limits the characters to 30. Created a Handlebars.js helper that calls the split and joins function that returns the correctly formatted url in the results page.
CoffeeScript defaults the last line to a return statement if no return is explicitly listed, so this function could be written shorthand as: `getBookTitle: () -> @get('title')`