title: How to find the latest record in cakephp?
body: <p>I've got a a table with a column request_time. There will be multiple requests and I want to get the latest request of a particular username:</p>
  
  <pre><code>$this-&gt;Requests-&gt;find('all', 'conditions' =&gt; array (
                                                 'username' =&gt; $username, 
                                                 'MAX'=&gt; 'request_time'));
  </code></pre>
  
  <p>The above doesn't work.  Is there something in Cakephp or do I need to do my own ->query()? </p>