silverstripe-framework/core/control/ModelAsController.php

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<?php
/**
* ModelAsController will hand over all control to the appopriate model object
* It uses URLSegment to determine the right object. Also, if (ModelClass)_Controller exists,
* that controller will be used instead. It should be a subclass of ContentController.
*
* @package sapphire
* @subpackage control
*/
class ModelAsController extends Controller implements NestedController {
/**
* Get the appropriate {@link ContentController} for handling a {@link SiteTree} object, link it to the object and
* return it.
*
* @param SiteTree $siteTree The SiteTree object to find a controller for.
* @param string $action The optional action that was requested, so that action-specific controllers work.
* @return ContentController
*/
public static function controller_for(SiteTree $siteTree, $action = null) {
$controller = "{$siteTree->class}_Controller";
if($action && class_exists($controller . '_' . ucfirst($action))) {
$controller = $controller . '_' . ucfirst($action);
}
return class_exists($controller) ? new $controller($siteTree) : $siteTree;
}
public function handleRequest($request) {
$this->pushCurrent();
$this->request = $request;
$this->urlParams = $request->allParams();
$this->init();
// If the basic database hasn't been created, then build it.
if(!DB::isActive() || !ClassInfo::hasTable('SiteTree')) {
$this->response = new HTTPResponse();
$this->redirect("dev/build?returnURL=" . (isset($_GET['url']) ? urlencode($_GET['url']) : ''));
$this->popCurrent();
return $this->response;
}
$result = $this->getNestedController();
if(is_object($result) && $result instanceOf RequestHandler) {
$result = $result->handleRequest($request);
}
$this->popCurrent();
return $result;
}
public function init() {
singleton('SiteTree')->extend('modelascontrollerInit', $this);
}
public function getNestedController() {
if($this->urlParams['URLSegment']) {
$SQL_URLSegment = Convert::raw2sql($this->urlParams['URLSegment']);
$child = SiteTree::get_by_link($SQL_URLSegment);
if(!$child) {
if($child = $this->findOldPage($SQL_URLSegment)) {
$url = Controller::join_links(
Director::baseURL(),
$child->URLSegment,
isset($this->urlParams['Action']) ? $this->urlParams['Action'] : null,
isset($this->urlParams['ID']) ? $this->urlParams['ID'] : null,
isset($this->urlParams['OtherID']) ? $this->urlParams['OtherID'] : null
);
$response = new HTTPResponse();
$response->redirect($url, 301);
return $response;
}
return ErrorPage::response_for(404, $this->request);
}
if($child) {
if(isset($_REQUEST['debug'])) Debug::message("Using record #$child->ID of type $child->class with URL {$this->urlParams['URLSegment']}");
// set language
if($child->Locale) Translatable::set_current_locale($child->Locale);
$controllerClass = "{$child->class}_Controller";
if($this->urlParams['Action'] && ClassInfo::exists($controllerClass.'_'.$this->urlParams['Action'])) {
$controllerClass = $controllerClass.'_'.$this->urlParams['Action'];
}
if(ClassInfo::exists($controllerClass)) {
$controller = new $controllerClass($child);
} else {
$controller = $child;
}
return $controller;
} else {
return new HTTPResponse("The requested page couldn't be found.",404);
}
} else {
user_error("ModelAsController not geting a URLSegment. It looks like the site isn't redirecting to home", E_USER_ERROR);
}
}
protected function findOldPage($urlSegment) {
// Build the query by replacing "SiteTree" with "SiteTree_versions" in a regular query.
// Note that this should *really* be handled by a more full-featured data mapper; as it stands
// this is a bit of a hack.
$origStage = Versioned::current_stage();
Versioned::reading_stage('Stage');
$versionedQuery = singleton('SiteTree')->extendedSQL('');
Versioned::reading_stage($origStage);
foreach($versionedQuery->from as $k => $v) {
$versionedQuery->renameTable($k, $k . '_versions');
}
$versionedQuery->select = array("\"SiteTree_versions\".\"RecordID\"");
$versionedQuery->where[] = "\"SiteTree_versions\".\"WasPublished\" = 1 AND \"URLSegment\" = '$urlSegment'";
$versionedQuery->orderby = "\"LastEdited\" DESC, \"SiteTree_versions\".\"WasPublished\"";
$versionedQuery->limit = 1;
$result = $versionedQuery->execute();
if($result->numRecords() == 1 && $redirectPage = $result->nextRecord()) {
$redirectObj = DataObject::get_by_id('SiteTree', $redirectPage['RecordID']);
if($redirectObj) {
// Double-check by querying this page in the same way that getNestedController() does. This
// will prevent query muck-ups from modules such as subsites
$doubleCheck = SiteTree::get_by_link($redirectObj->URLSegment);
if($doubleCheck) return $redirectObj;
}
}
return false;
}
}
?>