CalendarRule.php
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<?php
/**
* Joomla! Content Management System
*
* @copyright Copyright (C) 2005 - 2019 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
namespace Joomla\CMS\Form\Rule;
defined('JPATH_PLATFORM') or die;
use Joomla\CMS\Date\Date;
use Joomla\CMS\Form\Form;
use Joomla\CMS\Form\FormRule;
use Joomla\Registry\Registry;
/**
* Form Rule class for the Joomla Platform
*
* @since 3.7.0
*/
class CalendarRule extends FormRule
{
/**
* Method to test the calendar value for a valid parts.
*
* @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.
*
* @since 3.7.0
*/
public function test(\SimpleXMLElement $element, $value, $group = null, Registry $input = null, Form $form = null)
{
// If the field is empty and not required, the field is valid.
$required = ((string) $element['required'] == 'true' || (string) $element['required'] == 'required');
if (!$required && empty($value))
{
return true;
}
if (strtolower($value) == 'now')
{
return true;
}
try
{
return \JFactory::getDate($value) instanceof Date;
}
catch (\Exception $e)
{
return false;
}
}
}