Component-Builder/admin/models/rules/guid.php

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<?php
/**
* @package Joomla.Component.Builder
*
* @created 30th April, 2015
2022-07-09 15:45:08 +00:00
* @author Llewellyn van der Merwe <https://dev.vdm.io>
* @git Joomla Component Builder <https://git.vdm.dev/joomla/Component-Builder>
* @copyright Copyright (C) 2015 Vast Development Method. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
// No direct access to this file
defined('JPATH_PLATFORM') or die;
use Joomla\CMS\Factory;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Form\Form;
use Joomla\CMS\Form\FormRule;
use Joomla\Registry\Registry;
use Joomla\CMS\HTML\HTMLHelper as Html;
/**
* Form Rule (Guid) class for the Joomla Platform.
*/
class JFormRuleGuid extends FormRule
{
/**
* Method to test for a Globally Unique Identifier.
*
* @param \SimpleXMLElement $element The SimpleXMLElement object representing the `<field>` tag for the form field object.
* @param mixed $value The form field value to validate.
* @param string $group The field name group control value. This acts as an array container for the field.
* For example if the field has name="foo" and the group value is set to "bar" then the
* full field name would end up being "bar[foo]".
* @param Registry $input An optional Registry object with the entire data set to validate against the entire form.
* @param Form $form The form object for which the field is being tested.
*
* @return boolean True if the value is valid, false otherwise.
*
*/
public function test(\SimpleXMLElement $element, $value, $group = null, Registry $input = null, Form $form = null)
{
$value = trim($value);
// If the field is empty and not required, the field is valid.
$required = ((string) $element['required'] == 'true' || (string) $element['required'] == 'required');
if (!$required && empty($value))
{
return true;
}
// thanks to Lewie https://stackoverflow.com/a/1515456/1429677
return preg_match("/^(\{)?[a-f\d]{8}(-[a-f\d]{4}){4}[a-f\d]{8}(?(1)\})$/i", $value);
}
}