/components/CmsPageViewFilter.php

<?php

/**

 * CmsNodeFilter class file.

 * @author Christoffer Niska <christoffer.niska@nordsoftware.com>

 * @copyright Copyright &copy; 2011, Nord Software Ltd

 * @license http://www.opensource.org/licenses/bsd-license.php New BSD License

 * @package cms.components

 */



/**

 * Filter that ensures that the page is published and issues a 301 redirect to the correct URL

 * in case an incorrect page URL was requested.

 */

class CmsPageViewFilter extends CFilter

{

	/**

	 * Performs the pre-action filtering.

	 * @param CFilterChain $filterChain the filter chain that the filter is on

	 * @return boolean whether the filtering process should continue and the action should be executed

	 * @throws CHttpException if the page isn't published

	 */

	protected function preFilter($filterChain)

	{

		$controller = $filterChain->controller;



		if (isset($_GET['id']) && method_exists($controller, 'loadModel'))

		{

			$model = $controller->loadModel($_GET['id']);



			// Prevent accessing of unpublished pages.

			if (!$model->published)

				throw new CHttpException(404, Yii::t('CmsModule.core', 'The requested page does not exist.'));



			$url = $model->getUrl();

			if (strpos(Yii::app()->request->getRequestUri(), $url) === false)

				$controller->redirect($url, true, 301);

		}



		return parent::preFilter($filterChain);

	}

}