If you need to retrieve information about the current route--for instance, to prepare a future "back to page xxx" link--you should use the methods of the sfPatternRouting object. The URIs returned by the getCurrentInternalUri() method can be used in a call to a link_to() helper, as shown in Listing 9-25.
Listing 9-25 - Using sfRouting to Get Information About the Current Route
// If you require a URL like http://myapp.example.com/article/21 $routing = sfContext::getInstance()->getRouting(); // Use the following in article/read action $uri = $routing->getCurrentInternalUri(); => article/read?id=21 $uri = $routing->getCurrentInternalUri(true); => @article_by_id?id=21 $rule = $routing->getCurrentRouteName(); => article_by_id // If you just need the current module/action names, // remember that they are actual request parameters $module = $request->getParameter('module'); $action = $request->getParameter('action');
If you need to transform an internal URI into an external URL in an action--just as url_for() does in a template--use the genUrl() method of the sfController object, as shown in Listing 9-26.
Listing 9-26 - Using sfController to Transform an Internal URI
$uri = 'article/read?id=21'; $url = $this->getController()->genUrl($uri); => /article/21 $url = $this->getController()->genUrl($uri, true); => http://myapp.example.com/article/21