silverstripe-framework/admin/code/AdminRootController.php

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<?php
class AdminRootController extends Controller {
/**
* @var string
* @config
* The url base that all LeftAndMain derived panels will live under
* Won't automatically update the base route if you change this - that has to be done seperately
*/
static $url_base = 'admin';
/**
* @var string
* @config
* The LeftAndMain child that will be used as the initial panel to display if none is selected (i.e. if you visit /admin)
*/
static $default_panel = 'SecurityAdmin';
/**
* @var array
* Holds an array of url_pattern => controller k/v pairs, the same as Director::rules. However this is built
* dynamically from introspecting on all the classes that derive from LeftAndMain.
*
* Don't access this directly - always access via the rules() accessor below, which will build this array
* the first time it's accessed
*/
private static $_rules = null;
/**
* Gets a list of url_pattern => controller k/v pairs for each LeftAndMain derived controller
*/
public static function rules() {
if (self::$_rules === null) {
self::$_rules = array();
// Build an array of class => url_priority k/v pairs
$classes = array();
foreach (CMSMenu::get_cms_classes() as $class) {
$classes[$class] = Config::inst()->get($class, 'url_priority', Config::FIRST_SET);
}
// Sort them so highest priority item is first
arsort($classes, SORT_NUMERIC);
// Map over the array calling add_rule_for_controller on each
array_map(array(__CLASS__, 'add_rule_for_controller'), array_keys($classes));
}
return self::$_rules;
}
/**
* Add the appropriate k/v pair to self::$rules for the given controller.
*/
protected static function add_rule_for_controller($controllerClass) {
$urlSegment = Config::inst()->get($controllerClass, 'url_segment', Config::FIRST_SET);
$urlRule = Config::inst()->get($controllerClass, 'url_rule', Config::FIRST_SET);
if($urlSegment) {
// Make director rule
if($urlRule[0] == '/') $urlRule = substr($urlRule,1);
$rule = $urlSegment . '//' . $urlRule;
// ensure that the first call to add_rule_for_controller for a rule takes precedence
if(!isset(self::$_rules[$rule])) self::$_rules[$rule] = $controllerClass;
}
}
public function handleRequest(SS_HTTPRequest $request, DataModel $model) {
// If this is the final portion of the request (i.e. the URL is just /admin), direct to the default panel
if ($request->allParsed()) {
$base = $this->config()->url_base;
$segment = Config::inst()->get($this->config()->default_panel, 'url_segment');
$this->response = new SS_HTTPResponse();
$this->redirect(Controller::join_links($base, $segment));
return $this->response;
}
// Otherwise
else {
$rules = self::rules();
foreach($rules as $pattern => $controller) {
if(($arguments = $request->match($pattern, true)) !== false) {
$controllerObj = Injector::inst()->create($controller);
$controllerObj->setSession($this->session);
return $controllerObj->handleRequest($request, $model);
}
}
}
return $this->httpError(404, 'Not found');
}
}