silverstripe-framework/core/model/GhostPage.php

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<?php
/**
* Ghost pages are placeholder pages that are used to facilitate the apparent support for
* multiple parents.
*
* @deprecated 2.3 Use VirtualPage
*
* @package cms
*/
class GhostPage extends SiteTree implements HiddenClass {
static $has_one = array(
"LinkedPage" => "SiteTree",
);
static $db = array();
function getCMSFields($val) {
if($this->getField('LinkedPageID')) {
return $this->LinkedPage()->getCMSFields($val);
} else {
return new FieldSet(
new LabelField('GhostPageNoLinkedLabel',_t('GhostPage.NOLINKED', "This ghost page has no linked page."))
);
}
}
function hasField($fieldName) {
return parent::hasField($fieldName) || ($this->getField('LinkedPageID') && $this->LinkedPage()->hasField($fieldName));
}
function __get($fieldName) {
// echo "<li>$fieldName = ";
// echo $this->getComponent('LinkedPage')->__get($fieldName);
switch($fieldName) {
case "ID":
case "ClassName":
case "LinkedPageID":
case "ParentID":
case "URLSegment":
case "Parent":
return parent::__get($fieldName);
default:
if($this->getField('LinkedPageID')) {
return $this->getComponent('LinkedPage')->__get($fieldName);
} else {
return parent::__get($fieldName);
}
}
}
function __call($funcName, $args) {
switch($funcName) {
case "LinkedPage":
return parent::__call($funcName, $args);
default:
if($this->getField('LinkedPageID')) {
return $this->getComponent('LinkedPage')->__call($funcName, $args);
} else {
return parent::__call($funcName, $args);
}
}
}
function __set($fieldName, $fieldVal) {
switch($fieldName) {
case "ClassName":
case "MultipleParents";
break;
case "ID":
case "LinkedPageID":
parent::__set($fieldName, $fieldVal);
break;
default:
if($this->getField("LinkedPageID")) {
$this->LinkedPage()->__set($fieldName, $fieldVal);
}
parent::__set($fieldName, $fieldVal);
}
}
function write() {
if($this->getField("LinkedPageID")) {
$this->LinkedPage()->write();
}
parent::write();
}
function MultipleParents() {
return $this->LinkedPage()->MultipleParents();
}
}
/**
* Controller for GhostPages
* @package cms
*/
class GhostPage_Controller extends Page_Controller {
function getViewer($action) {
return $this->LinkedPage()->getViewer($action);
}
}
/**
* Special type of ComponentSet just for GhostPages
* @package cms
*/
class GhostPage_ComponentSet extends ComponentSet {
function setOwner($ownerObj) {
$this->ownerObj = $ownerObj;
}
function add($item) {
$id = is_object($item) ? $item->ID : $item;
$ghost = new GhostPage();
$ghost->setField('ParentID', $id);
$ghost->setField('LinkedPageID', $this->ownerObj->ID);
$ghost->setField('URLSegment', $this->ownerObj->URLSegment);
$ghost->write();
}
function remove($item) {
$id = is_object($item) ? $item->ID : $item;
$ghosts = DataObject::get("GhostPage","\"ParentID\" = $id AND \"LinkedPageID\" = {$this->ownerObj->ID}");
if($ghosts) {
foreach($ghosts as $ghost) {
$ghost->delete();
}
}
}
function removeMany($itemList) {
if($itemList) {
foreach($itemList as $item) {
$this->remove($item);
}
}
}
}
?>