63 lines
2.0 KiB
PHP
63 lines
2.0 KiB
PHP
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<?php
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/**
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* @package Joomla.Platform
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* @subpackage Form
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*
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* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
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* @license GNU General Public License version 2 or later; see LICENSE
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*/
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defined('JPATH_PLATFORM') or die;
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/**
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* Form Rule class for the Joomla Platform.
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*
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* @package Joomla.Platform
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* @subpackage Form
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* @since 11.1
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*/
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class JFormRuleUsername extends JFormRule
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{
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/**
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* Method to test the username for uniqueness.
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*
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* @param SimpleXMLElement $element The SimpleXMLElement object representing the <field /> tag for the form field object.
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* @param mixed $value The form field value to validate.
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* @param string $group The field name group control value. This acts as as an array container for the field.
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* For example if the field has name="foo" and the group value is set to "bar" then the
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* full field name would end up being "bar[foo]".
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* @param JRegistry $input An optional JRegistry object with the entire data set to validate against the entire form.
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* @param JForm $form The form object for which the field is being tested.
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*
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* @return boolean True if the value is valid, false otherwise.
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*
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* @since 11.1
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*/
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public function test(SimpleXMLElement $element, $value, $group = null, JRegistry $input = null, JForm $form = null)
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{
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// Get the database object and a new query object.
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$db = JFactory::getDbo();
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$query = $db->getQuery(true);
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// Build the query.
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$query->select('COUNT(*)')
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->from('#__users')
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->where('username = ' . $db->quote($value));
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// Get the extra field check attribute.
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$userId = ($form instanceof JForm) ? $form->getValue('id') : '';
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$query->where($db->quoteName('id') . ' <> ' . (int) $userId);
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// Set and query the database.
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$db->setQuery($query);
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$duplicate = (bool) $db->loadResult();
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if ($duplicate)
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{
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return false;
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}
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return true;
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}
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}
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