title: Implementing backend yii
body: <p>I am trying to implement the directory structure from the yii wiki
  <a href="http://www.yiiframework.com/wiki/33/" rel="nofollow">http://www.yiiframework.com/wiki/33/</a></p>
  
  <p>I have everything setup properly I believe but when I try to use the urlManger within the backend/config/main i recieve this error.</p>
  
  <p>Property "CWebApplication.urlManager" is read only</p>
  
  <p>//backend/config/main.php</p>
  
  <pre><code>&lt;?php
  $backend=dirname(dirname(__FILE__));
  $frontend=dirname($backend);
  Yii::setPathOfAlias('backend', $backend);
  
  return array(
      'basePath' =&gt; $frontend,
  
      'controllerPath' =&gt; $backend.'/controllers',
      'viewPath' =&gt; $backend.'/views',
      'runtimePath' =&gt; $backend.'/runtime',
  
      'import' =&gt; array(
          'backend.models.*',
          'backend.components.*',
          'application.models.*',
          'application.components.*',
      ),
      'urlManager'=&gt;array(
          'urlFormat'=&gt;'path',
          'showScriptName'=&gt;false,
          //'caseSensitive'=&gt;false,
          'rules'=&gt;array(
       //       'admin'=&gt;array('adminUser', 'caseSensitive'=&gt;false),
          )
      )
  );
  </code></pre>