title: Get constants of Model
body: <p><strong>CakePHP:</strong> 2.3.5</p>
  
  <pre><code>class Table extends AppModel {
  
      const STATUS_FREE = 0;
      const STATUS_BUSY = 1;
      const STATUS_INCHECK = 2;
      const STATUS_LINK = 3;
      const STATUS_CLEAN = 4;
      const STATUS_CASHIER = 9;
  </code></pre>
  
  <p>I'm in <strong>TablesController</strong>, and I need access this constants.
  The only way I founded for do that, is:</p>
  
  <pre><code>$this-&gt;loadModel('Table');
  $free = Table::STATUS_FREE;
  </code></pre>
  
  <p>I try too:</p>
  
  <pre><code>self::STATUS_FREE
  </code></pre>
  
  <p>Why I need use <code>$this-&gt;loadModel</code>, if I in TablesController? </p>