silverstripe-cms/code/forms/SiteTreeURLSegmentField.php

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<?php
/**
* @package cms
* @subpackage forms
*/
/**
* Used to edit the SiteTree->URLSegment property, and suggest input based on the serverside rules
* defined through {@link SiteTree->generateURLSegment()} and {@link URLSegmentFilter}.
*
* Note: The actual conversion for saving the value takes place in the model layer.
*/
class SiteTreeURLSegmentField extends TextField {
static $allowed_actions = array(
'suggest'
);
function suggest($request) {
if(!$request->getVar('value')) return $this->httpError(405);
$page = $this->getPage();
// Same logic as SiteTree->onBeforeWrite
$page->URLSegment = $page->generateURLSegment($request->getVar('value'));
$count = 2;
while(!$page->validURLSegment()) {
$page->URLSegment = preg_replace('/-[0-9]+$/', null, $page->URLSegment) . '-' . $count;
$count++;
}
Controller::curr()->getResponse()->addHeader('Content-Type', 'application/json');
return Convert::raw2json(array('value' => $page->URLSegment));
}
/**
* @return SiteTree
*/
function getPage() {
$idField = $this->getForm()->dataFieldByName('ID');
return ($idField && $idField->Value()) ? DataObject::get_by_id('SiteTree', $idField->Value()) : singleton('SiteTree');
}
}