yii debug ajax request with CWeblogRoute

Controller.php

<?php
// ...
	public function actionXXX()
		// ...
		$this->beginClip('debug');
		Yii::app()->log->processLogs(null);
		Yii::app()->detachEventHandler('onEndRequest',array(Yii::app()->log,'processLogs'));
		$this->endClip();

		$this->sendJsonResponse(array(
			'html' => $resultingUsersList . $this->getClips()->itemAt('debug'),
		));
	}

main.php

<?php
// config file
return array(
	'components'=>array(
		'db' => array(
			'enableParamLogging' => true,
			'enableProfiling' => true,
		),

		'log' => array(
			'routes' => array(
				array(
					'class' => 'CWebLogRoute',
					'categories' => 'user.*',
					'categories' => 'user.*, system.db.*',
					'showInFireBug'=>true,
					'ignoreAjaxInFireBug'=>false,
				),
			),
		),
	),
);