This document contains information for an outdated version (2.4) and may not be maintained any more. If some of your projects still use this version, consider upgrading as soon as possible.
Director is the first step in the "execution pipeline". It parses the URL, matching it to one of a number of patterns, and determines the controller, action and any argument to be used. It then runs the controller, which will finally run the viewer and/or perform processing steps.
- Checking for an Ajax-Request: Use Director::is_ajax() instead of checking for $_REQUEST['ajax'].
The Director class has a number of methods to facilitate 301 and 302 HTTP redirection.
- Director::redirect("action-name"): If there's no slash in the URL passed to redirect, then it is assumed that you want to go to a different action on the current controller.
- Director::redirect("relative/url"): If there is a slash in the URL, it's taken to be a normal URL. Relative URLs will are assumed to be relative to the site-root; so Director::redirect("home/") will work no matter what the current URL is.
- Director::redirect("http://www.absoluteurl.com"): Of course, you can pass redirect() absolute URL s too.
- Director::redirectPerm("any-url"): redirectPerm takes the same arguments as redirect, but it will send a 301
(permanent) instead of a 302 (temporary) header. It improves search rankings, so this should be used whenever the
following two conditions are true:
- Nothing happens server-side prior to the redirection
- The redirection will always occur
- Director::redirectBack(): This will return you to the previous page. There's no permanent version of redirectBack().
Custom Rewrite Rules
You can influence the way URLs are resolved one of 2 ways
- Adding rules to Director in
<yourproject>/_config.php(See Default Rewrite Rules below for examples)
- Adding rules in your extended Controller class via the $url_handlers static variable
See controller for examples and explanations on how the rules get processed for both 1 and 2 above.
- Static redirect for specific URL
Director::addRules(100, array( 'myPermanentRedirect' => 'redirect:http://www.mysite.com' ));
Default Rewrite Rules
SilverStripe comes with certain rewrite rules (e.g. for admin/assets).
- See ModelAsController class for details on controller/model-coupling
- See execution-pipeline for custom routing