silverstripe-framework/core/model/ErrorPage.php

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<?php
/**
* @package cms
*/
/**
* ErrorPage holds the content for the page of an error response.
* @package cms
*/
class ErrorPage extends Page {
static $db = array(
"ErrorCode" => "Int",
);
static $defaults = array(
"ShowInMenus" => 0,
);
/**
* Ensures that there is always a 404 page.
*/
function requireDefaultRecords() {
parent::requireDefaultRecords();
if(!DataObject::get_one("ErrorPage", "ErrorCode = '404'")) {
$errorpage = new ErrorPage();
$errorpage->ErrorCode = 404;
$errorpage->Title = "Page not found";
$errorpage->URLSegment = "page-not-found";
$errorpage->ShowInMenus = false;
$errorpage->Content = "<p>Sorry, it seems you were trying to access a page that doesn't exist.</p><p>Please check the spelling of the URL you were trying to access and try again.</p>";
$errorpage->Status = "New page";
$errorpage->write();
// Don't publish, as the manifest may not be built yet
// $errorpage->publish("Stage", "Live");
Database::alteration_message("404 page created","created");
}
}
function getCMSFields() {
$fields = parent::getCMSFields();
$fields->addFieldToTab(
"Root.Content.Main",
new DropdownField(
"ErrorCode",
_t('ErrorPage.CODE', "Error code"),
array(
404 => "404 - Page not found",
500 => "500 - Server error"
)
),
"Content"
);
return $fields;
}
/**
* When an error page is published, create a static HTML page with its
* content, so the page can be shown even when SilverStripe is not
* functioning correctly before publishing this page normally.
* @param string|int $fromStage Place to copy from. Can be either a stage name or a version number.
* @param string $toStage Place to copy to. Must be a stage name.
* @param boolean $createNewVersion Set this to true to create a new version number. By default, the existing version number will be copied over.
*/
function publish($fromStage, $toStage, $createNewVersion = false) {
// Temporarily log out when producing this page
$loggedInMember = Member::currentUser();
Session::clear("loggedInAs");
$alc_enc = isset($_COOKIE['alc_enc']) ? $_COOKIE['alc_enc'] : null;
Cookie::set('alc_enc', null);
$oldStage = Versioned::current_stage();
// Run the page
Requirements::clear();
$controller = new ErrorPage_Controller($this);
$errorContent = $controller->run( array() )->getBody();
if(!file_exists("../assets")) {
mkdir("../assets", 02775);
}
if($fh = fopen("../assets/error-$this->ErrorCode.html", "w")) {
fwrite($fh, $errorContent);
fclose($fh);
}
// Restore the version we're currently connected to.
Versioned::reading_stage($oldStage);
// Log back in
if($loggedInMember) Session::set("loggedInAs", $loggedInMember->ID);
if(isset($alc_enc)) Cookie::set('alc_enc', $alc_enc);
return $this->extension_instances['Versioned']->publish($fromStage, $toStage, $createNewVersion);
}
}
/**
* Controller for ErrorPages.
*/
class ErrorPage_Controller extends Page_Controller {
public function init() {
parent::init();
Director::set_status_code($this->failover->ErrorCode ? $this->failover->ErrorCode : 404);
}
}
?>