title: CakePHP: how to use Controller::referer() in a view
body: <p>I'm getting the following error:</p>
  
  <pre><code>Strict (2048): Non-static method Controller::referer() should not be called statically,
  assuming $this from incompatible context [APP/View/Questions/admin_edit.ctp, line 20]
  </code></pre>
  
  <p>Caused by this: </p>
  
  <pre><code>//in app/View/Questions/admin_edit.ctp
  echo $this-&gt;Html-&gt;link('Cancel', Controller::referer() );
  </code></pre>
  
  <p>Why?</p>