silverstripe-cms/code/model/SiteTreeFileExtension.php

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<?php
/**
* @package cms
* @subpackage model
*/
class SiteTreeFileExtension extends DataExtension {
function extraStatics($class = null, $extension = null) {
return array(
'belongs_many_many' => array(
"BackLinkTracking" => "SiteTree",
)
);
}
/**
* Extend through {@link updateBackLinkTracking()} in your own {@link Extension}.
*
* @return ComponentSet
*/
function BackLinkTracking($filter = "", $sort = "", $join = "", $limit = "") {
if(class_exists("Subsite")){
$rememberSubsiteFilter = Subsite::$disable_subsite_filter;
Subsite::disable_subsite_filter(true);
}
$links = $this->owner->getManyManyComponents('BackLinkTracking', $filter, $sort, $join, $limit);
$this->owner->extend('updateBackLinkTracking', $links);
if(class_exists("Subsite")){
Subsite::disable_subsite_filter($rememberSubsiteFilter);
}
return $links;
}
/**
* @todo Unnecessary shortcut for AssetTableField, coupled with cms module.
*
* @return Integer
*/
function BackLinkTrackingCount() {
$pages = $this->owner->BackLinkTracking();
if($pages) {
return $pages->Count();
} else {
return 0;
}
}
/**
* Updates link tracking.
*/
function onAfterDelete() {
// We query the explicit ID list, because BackLinkTracking will get modified after the stage
// site does its thing
$brokenPageIDs = $this->owner->BackLinkTracking()->column("ID");
if($brokenPageIDs) {
$origStage = Versioned::current_stage();
// This will syncLinkTracking on draft
Versioned::reading_stage('Stage');
$brokenPages = DataObject::get('SiteTree')->byIDs($brokenPageIDs);
foreach($brokenPages as $brokenPage) $brokenPage->write();
// This will syncLinkTracking on published
Versioned::reading_stage('Live');
$liveBrokenPages = DataObject::get('SiteTree')->byIDs($brokenPageIDs);
foreach($liveBrokenPages as $brokenPage) {
$brokenPage->write();
}
Versioned::reading_stage($origStage);
}
}
/**
* Rewrite links to the $old file to now point to the $new file.
*
* @uses SiteTree->rewriteFileURL()
*
* @param String $old File path relative to the webroot
* @param String $new File path relative to the webroot
*/
function updateLinks($old, $new) {
if(class_exists('Subsite')) Subsite::disable_subsite_filter(true);
$pages = $this->owner->BackLinkTracking();
$summary = "";
if($pages) {
foreach($pages as $page) $page->rewriteFileURL($old,$new);
}
if(class_exists('Subsite')) Subsite::disable_subsite_filter(false);
}
}