title: CakePHP 4 How to assign date field created_at to created
body: <p>I have a table called products. In product table I have 2 fields <code>created_at</code> and <code>update_at</code>. I don't want to change it to <code>created</code> and <code>modified</code>. </p>
  
  <p>Without change table fields name, how can I assign that created_at field is created to get cakephp time helper auto update date ? </p>
  
  <p>My entity I have tried below </p>
  
  <pre><code>protected $_accessible = [
          'created_at' =&gt; $this-&gt;created,
          'updated_at' =&gt; $this-&gt;modified,
  ];
  </code></pre>
  
  <p>Getting error.</p>