title: Cant get requested GET param in yii
body: <p>im trying create url like this: <code>www.domain.com/auth?join=social</code> in yii.
  This is my config: </p>
  
  <pre><code>'urlManager' =&gt; array(
      'urlFormat' =&gt; 'path',
       'rules' =&gt; array(
          '&lt;action:(auth)&gt;' =&gt; 'site/&lt;action&gt;',
          '&lt;controller:\w+&gt;/&lt;action:\w+&gt;' =&gt; '&lt;controller&gt;/&lt;action&gt;',
       ),
       'showScriptName'=&gt;false,
  ), 
  </code></pre>
  
  <p>when i calling this: <code>www.domain.com/auth?join=social</code> page i cant get param: <code>join</code>. But when i calling <code>www.domain.com/index.php/auth?join=social</code> i can get. 
  im getting param with this code: <code>$social = Yii::app()-&gt;request-&gt;getParam('join');</code>. Where is my error? </p>