How to redirect the visitors to another site in Middleman?

Redirecting to another site was very easy in PHP. If they wanted to redirect visitors from "www.yoursite.com/news" to "www.bbc.com"...all I had to do was make the "news" folder and create an index.php file in it and add this line:

<?php
   header("Location: http://www.bbc.com/");
?>

And I was done! But I recently started working on a project written in Ruby, and having trouble to figure out how to achieve this simple task :<

This might be a very silly question, but any help will be greatly appreciated!!

UPDATE:

So found out that this project is using static site generator Middleman to build the site, that's why there is no routes.rb file. It only has config.rb. Can anyone please help me to figure out how to redirect in middleman?

2nd UPDATE:

Looks like because of Middleman, this redirecting isn't possible that simply. So I am asking this (very dumb) question: How to redirect URL in Javascript or jQuery

Solution

So finally found an easy solution to my problem :)

In order to redirect www.yoursite.com/news to www.bbc.com, first I created a news.html.erb file under my source folder (where you have your index.html.erb file). And in that file I added the following lines and wallaaahhhh!

<% content_for :body_content do %>
  <script type="text/javascript">
    // Javascript URL redirection
    window.location.replace("http://www.bbc.com/");
  </script>

  <noscript>
    // Using HTML refresh meta tag as a fail back in case the user has javascript disabled
    <meta http-equiv="refresh" content="0;URL=http://www.bbc.com/">
  </noscript>
<% end %>

One thing I should mention here is that most sites suggested

using window.location.href, because replace() does not put the originating page in the session history, meaning the user won’t get stuck in a never-ending back-button process.

But in my case window.location.href wasn't doing the trick :(