silverstripe-cms/code/Model/VirtualPage_Controller.php

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<?php
namespace SilverStripe\CMS\Model;
use Exception;
use Page_Controller;
use SilverStripe\CMS\Controllers\ContentController;
use SilverStripe\CMS\Controllers\ModelAsController;
/**
* Controller for the virtual page.
* @package cms
*/
class VirtualPage_Controller extends Page_Controller
{
private static $allowed_actions = array(
'loadcontentall' => 'ADMIN',
);
/**
* Backup of virtualised controller
*
* @var ContentController
*/
protected $virtualController = null;
/**
* Get virtual controller
*
* @return ContentController
*/
protected function getVirtualisedController()
{
if ($this->virtualController) {
return $this->virtualController;
}
// Validate virtualised model
/** @var VirtualPage $page */
$page = $this->data();
$virtualisedPage = $page->CopyContentFrom();
if (!$virtualisedPage || !$virtualisedPage->exists()) {
return null;
}
// Create controller using standard mechanism
$this->virtualController = ModelAsController::controller_for($virtualisedPage);
return $this->virtualController;
}
public function getViewer($action)
{
$controller = $this->getVirtualisedController() ?: $this;
return $controller->getViewer($action);
}
/**
* When the virtualpage is loaded, check to see if the versions are the same
* if not, reload the content.
* NOTE: Virtual page must have a container object of subclass of sitetree.
* We can't load the content without an ID or record to copy it from.
*/
public function init()
{
parent::init();
$this->__call('init', array());
}
/**
* Also check the original object's original controller for the method
*
* @param string $method
* @return bool
*/
public function hasMethod($method)
{
if (parent::hasMethod($method)) {
return true;
};
// Fallback
$controller = $this->getVirtualisedController();
return $controller && $controller->hasMethod($method);
}
/**
* Pass unrecognized method calls on to the original controller
*
* @param string $method
* @param string $args
* @return mixed
*
* @throws Exception Any error other than a 'no method' error.
*/
public function __call($method, $args)
{
// Check if we can safely call this method before passing it back
// to custom methods.
if ($this->getExtraMethodConfig($method)) {
return parent::__call($method, $args);
}
// Pass back to copied page
$controller = $this->getVirtualisedController();
if (!$controller) {
return null;
}
// Ensure request/response data is available on virtual controller
$controller->setRequest($this->getRequest());
$controller->setResponse($this->getResponse());
return call_user_func_array(array($controller, $method), $args);
}
}