title: Change Express route path on the fly
body: <p>I want to know a way to change a route path on the fly (with the application already running).</p>
  
  <pre><code>var route = express.Route();
  route.get('a/path/:id', callback);
  </code></pre>
  
  <p>I wan't to change the route with path <code>'a/path/:id'</code> to <code>'another/path/:id'</code></p>