title: Yii don't understand how to log a message
body: <p>I followed this <a href="http://www.yiiframework.com/doc/guide/1.1/en/topics.logging" rel="noreferrer">tutorial</a> but still I go to the webpage refresh, then go to the file and still I can't find the log message I sent
  I wrote the following line in a controller:</p>
  
  <pre><code>Yii::log("Index Checkout",CLogger::LEVEL_ERROR);
  </code></pre>
  
  <p>And My configurations:</p>
  
  <pre><code>'log' =&gt; array(
              'class' =&gt; 'CLogRouter',
              'routes' =&gt; array(
                  array(
                      'logFile'=&gt;'trace.log',
                      'class' =&gt; 'CFileLogRoute',
                      'levels' =&gt; 'error,info, warning',
                  ),
              // uncomment the following to show log messages on web pages
              /*
                array(
                'class'=&gt;'CWebLogRoute',
                ),
               */
              ),
  </code></pre>