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<?php
/**
* @package Joomla.Libraries
* @subpackage Form
*
* @copyright Copyright (C) 2005 - 2014 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
defined('JPATH_BASE') or die;
JFormHelper::loadFieldClass('list');
/**
* Field to load a list of available users statuses
*
* @package Joomla.Libraries
* @subpackage Form
* @since 3.2
*/
class JFormFieldUserGroupList extends JFormFieldList
{
/**
* The form field type.
*
* @var string
* @since 3.2
*/
protected $type = 'UserGroupList';
/**
* Cached array of the category items.
*
* @var array
* @since 3.2
*/
protected static $options = array();
/**
* Method to get the options to populate list
*
* @return array The field option objects.
*
* @since 3.2
*/
protected function getOptions()
{
// Hash for caching
$hash = md5($this->element);
if (!isset(static::$options[$hash]))
{
static::$options[$hash] = parent::getOptions();
$options = array();
$db = JFactory::getDbo();
$query = $db->getQuery(true)
->select('a.id AS value')
->select('a.title AS text')
->select('COUNT(DISTINCT b.id) AS level')
->from('#__usergroups as a')
->join('LEFT', '#__usergroups AS b ON a.lft > b.lft AND a.rgt < b.rgt')
->group('a.id, a.title, a.lft, a.rgt')
->order('a.lft ASC');
$db->setQuery($query);
if ($options = $db->loadObjectList())
{
foreach ($options as &$option)
{
$option->text = str_repeat('- ', $option->level) . $option->text;
}
static::$options[$hash] = array_merge(static::$options[$hash], $options);
}
}
return static::$options[$hash];
}
}