title: cakephp beforesave question
body: <p>I follow in book.cake and I don't know I should send something to the parameters.</p>
  
  <pre><code>function beforeSave() {
  if (!empty($this-&gt;data['Article']['create_dt']) &amp;&amp; !empty($this-&gt;data['Article']['modified_dt'])) {
          $this-&gt;data['Article']['create_dt'] = $this-&gt;dateFormatBeforeSave($this-&gt;data['Article']['create_dt']);
          $this-&gt;data['Article']['modified_dt'] = $this-&gt;dateFormatBeforeSave($this-&gt;data['Article']['modified_dt']);
  }
  return true;
  }
  </code></pre>
  
  <p>I try to search example but don't found. 
  I need many example<br>
  somebody  can help me to find big resource
  thank for suggest</p>