NumberRule.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\Form\Form;
use Joomla\CMS\Form\FormRule;
use Joomla\Registry\Registry;
/**
* Form Rule class for the Joomla Platform.
*
* @since 3.5
*/
class NumberRule extends FormRule
{
/**
* Method to test the range for a number value using min and max attributes.
*
* @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 3.5
*/
public function test(\SimpleXMLElement $element, $value, $group = null, Registry $input = null, Form $form = null)
{
// Check if the field is required.
$required = ((string) $element['required'] == 'true' || (string) $element['required'] == 'required');
// If the value is empty and the field is not required return True.
if (($value === '' || $value === null) && ! $required)
{
return true;
}
$float_value = (float) $value;
if (isset($element['min']))
{
$min = (float) $element['min'];
if ($min > $float_value)
{
return false;
}
}
if (isset($element['max']))
{
$max = (float) $element['max'];
if ($max < $float_value)
{
return false;
}
}
return true;
}
}