ata-binding between the select element and the <code>orderProp</code> model.
<code>orderProp</code> is then used as the input for the <code>orderBy</code> filter.</p>
<p>As we discussed in the section about data-binding and the repeater in step 3, whenever the model
changes (for example because a user changes the order with the select drop down menu), Angular&#39;s
data-binding will cause the view to automatically update. No bloated DOM manipulation code is
necessary!</p>
<h2 id="controller">Controller</h2>