silverstripe-framework/Control/VersionedRequestFilter.php

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<?php
namespace SilverStripe\Control;
use SilverStripe\Core\Convert;
use SilverStripe\Dev\SapphireTest;
use SilverStripe\ORM\DataModel;
use SilverStripe\ORM\Versioning\Versioned;
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use SilverStripe\Security\Security;
/**
* Initialises the versioned stage when a request is made.
*/
class VersionedRequestFilter implements RequestFilter {
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public function preRequest(HTTPRequest $request, Session $session, DataModel $model) {
// Bootstrap session so that Session::get() accesses the right instance
$dummyController = new Controller();
$dummyController->setSession($session);
$dummyController->setRequest($request);
$dummyController->pushCurrent();
// Block non-authenticated users from setting the stage mode
if(!Versioned::can_choose_site_stage($request)) {
$permissionMessage = sprintf(
_t(
"ContentController.DRAFT_SITE_ACCESS_RESTRICTION",
'You must log in with your CMS password in order to view the draft or archived content. '.
'<a href="%s">Click here to go back to the published site.</a>'
),
Convert::raw2xml(Controller::join_links(Director::baseURL(), $request->getURL(), "?stage=Live"))
);
// Force output since RequestFilter::preRequest doesn't support response overriding
$response = Security::permissionFailure($dummyController, $permissionMessage);
$session->inst_save();
$dummyController->popCurrent();
// Prevent output in testing
if(class_exists('SilverStripe\\Dev\\SapphireTest', false) && SapphireTest::is_running_test()) {
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throw new HTTPResponse_Exception($response);
}
$response->output();
die;
}
Versioned::choose_site_stage();
$dummyController->popCurrent();
return true;
}
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public function postRequest(HTTPRequest $request, HTTPResponse $response, DataModel $model) {
return true;
}
}