UsergrouplistField.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\Field;
defined('JPATH_PLATFORM') or die;
use Joomla\CMS\Access\Access;
use Joomla\CMS\Factory;
use Joomla\CMS\Form\FormHelper;
use Joomla\CMS\Helper\UserGroupsHelper;
FormHelper::loadFieldClass('list');
/**
* Field to load a dropdown list of available user groups
*
* @since 3.2
*/
class UsergrouplistField 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 attach a JForm object to the field.
*
* @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]".
*
* @return boolean True on success.
*
* @since 1.7.0
*/
public function setup(\SimpleXMLElement $element, $value, $group = null)
{
if (is_string($value) && strpos($value, ',') !== false)
{
$value = explode(',', $value);
}
return parent::setup($element, $value, $group);
}
/**
* 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();
$groups = UserGroupsHelper::getInstance()->getAll();
$checkSuperUser = (int) $this->getAttribute('checksuperusergroup', 0);
$isSuperUser = Factory::getUser()->authorise('core.admin');
$options = array();
foreach ($groups as $group)
{
// Don't show super user groups to non super users.
if ($checkSuperUser && !$isSuperUser && Access::checkGroup($group->id, 'core.admin'))
{
continue;
}
$options[] = (object) array(
'text' => str_repeat('- ', $group->level) . $group->title,
'value' => $group->id,
'level' => $group->level
);
}
static::$options[$hash] = array_merge(static::$options[$hash], $options);
}
return static::$options[$hash];
}
}