title: Yii::app()->request did not get $_POST values
body: <p>I am new to Yii framework and I am having trouble with retrieving data from my form. In my controller I wrote:</p>
  
  <pre><code>$request = Yii::app()-&gt;request;
  $form = $request-&gt;getPost('createProjectForm');
  var_dump($form);
  </code></pre>
  
  <p>Whenever I submit, the form is null. However, if I var_dump($_POST), I still get the values. Can anyone tell me what is wrong? Thank you very much and sorry for my bad English.</p>