.44 27.29 10.6l37.1-37.1c59.28-59.26 59.28-155.7 0-214.96z"/>
      </svg></a> </h2>
<section aria-labelledby="toc_dynamic-models">
<p>Some routes 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 a