title: django order_by query set, ascending and descending
body: <p>How can I order by descending my query set in django by date?</p>
  
  <pre><code>Reserved.objects.all().filter(client=client_id).order_by('check_in')
  </code></pre>
  
  <p>I just want to filter from descending all the Reserved by check_in date.</p>