silverstripe-cms/code/controllers/ModelAsController.php

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<?php
/**
* ModelAsController deals with mapping the initial request to the first {@link SiteTree}/{@link ContentController}
* pair, which are then used to handle the request.
*
* @package cms
* @subpackage control
*/
class ModelAsController extends Controller implements NestedController {
private static $extensions = array('OldPageRedirector');
/**
* Get the appropriate {@link ContentController} for handling a {@link SiteTree} object, link it to the object and
* return it.
*
* @param SiteTree $sitetree
* @param string $action
* @return ContentController
*/
public static function controller_for(SiteTree $sitetree, $action = null) {
if ($sitetree->class == 'SiteTree') {
$controller = "ContentController";
} else {
$ancestry = ClassInfo::ancestry($sitetree->class);
while ($class = array_pop($ancestry)) {
if (class_exists($class . "_Controller")) break;
}
$controller = ($class !== null) ? "{$class}_Controller" : "ContentController";
}
if($action && class_exists($controller . '_' . ucfirst($action))) {
$controller = $controller . '_' . ucfirst($action);
}
return class_exists($controller) ? Injector::inst()->create($controller, $sitetree) : $sitetree;
}
public function init() {
singleton('SiteTree')->extend('modelascontrollerInit', $this);
parent::init();
}
/**
* @uses ModelAsController::getNestedController()
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* @param SS_HTTPRequest $request
* @param DataModel $model
* @return SS_HTTPResponse
*/
public function handleRequest(SS_HTTPRequest $request, DataModel $model) {
$this->setRequest($request);
$this->setDataModel($model);
$this->pushCurrent();
$this->getResponse();
$this->init();
// If we had a redirection or something, halt processing.
if($this->getResponse()->isFinished()) {
$this->popCurrent();
return $this->getResponse();
}
// If the database has not yet been created, redirect to the build page.
if(!DB::is_active() || !ClassInfo::hasTable('SiteTree')) {
$this->getResponse()->redirect(Director::absoluteBaseURL() . 'dev/build?returnURL=' . (isset($_GET['url']) ? urlencode($_GET['url']) : null));
$this->popCurrent();
return $this->getResponse();
}
try {
$result = $this->getNestedController();
if($result instanceof RequestHandler) {
$result = $result->handleRequest($this->getRequest(), $model);
} else if(!($result instanceof SS_HTTPResponse)) {
user_error("ModelAsController::getNestedController() returned bad object type '" .
get_class($result)."'", E_USER_WARNING);
}
} catch(SS_HTTPResponse_Exception $responseException) {
$result = $responseException->getResponse();
}
$this->popCurrent();
return $result;
}
/**
* @return ContentController
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* @throws Exception If URLSegment not passed in as a request parameter.
*/
public function getNestedController() {
$request = $this->getRequest();
if(!$URLSegment = $request->param('URLSegment')) {
throw new Exception('ModelAsController->getNestedController(): was not passed a URLSegment value.');
}
// Find page by link, regardless of current locale settings
if(class_exists('Translatable')) Translatable::disable_locale_filter();
// Select child page
$conditions = array('"SiteTree"."URLSegment"' => rawurlencode($URLSegment));
if(SiteTree::config()->nested_urls) {
$conditions[] = array('"SiteTree"."ParentID"' => 0);
}
$sitetree = DataObject::get_one('SiteTree', $conditions);
// Check translation module
// @todo Refactor out module specific code
if(class_exists('Translatable')) Translatable::enable_locale_filter();
if(!$sitetree) {
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$this->httpError(404, 'The requested page could not be found.');
}
// Enforce current locale setting to the loaded SiteTree object
if(class_exists('Translatable') && $sitetree->Locale) Translatable::set_current_locale($sitetree->Locale);
if(isset($_REQUEST['debug'])) {
Debug::message("Using record #$sitetree->ID of type $sitetree->class with link {$sitetree->Link()}");
}
return self::controller_for($sitetree, $this->getRequest()->param('Action'));
}
/**
* @deprecated 4.0 Use OldPageRedirector::find_old_page instead
*
* @param string $URLSegment A subset of the url. i.e in /home/contact/ home and contact are URLSegment.
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* @param int $parent The ID of the parent of the page the URLSegment belongs to.
* @param bool $ignoreNestedURLs
* @return SiteTree
*/
static public function find_old_page($URLSegment, $parent = null, $ignoreNestedURLs = false) {
Deprecation::notice('4.0', 'Use OldPageRedirector::find_old_page instead');
if ($parent) {
$parent = SiteTree::get()->byId($parent);
}
$url = OldPageRedirector::find_old_page(array($URLSegment), $parent);
return SiteTree::get_by_link($url);
}
}