s always display the same model. For example, the <code>/photos</code>
route will always display the same list of photos available in the
application. If your user leaves this route and comes back later, the
model does not change.</p>
<p>However, you will often have a route whose model will change depending
on user interaction. For example, imagine a photo viewer app. The
<code>/photos</code> route will render the <code>photos</code> template with the list of
photos as the model, which never changes. But wh