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<?php
/**
* @package Joomla.Administrator
* @subpackage com_users
*
* @copyright Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
defined('_JEXEC') or die;
/**
* Methods supporting a list of user group records.
*
* @since 1.6
*/
class UsersModelGroups extends JModelList
{
/**
* Constructor.
*
* @param array $config An optional associative array of configuration settings.
*
* @see JController
* @since 1.6
*/
public function __construct($config = array())
{
if (empty($config['filter_fields']))
{
$config['filter_fields'] = array(
'id', 'a.id',
'parent_id', 'a.parent_id',
'title', 'a.title',
'lft', 'a.lft',
'rgt', 'a.rgt',
);
}
parent::__construct($config);
}
/**
* Method to auto-populate the model state.
*
* Note. Calling getState in this method will result in recursion.
*
* @param string $ordering An optional ordering field.
* @param string $direction An optional direction (asc|desc).
*
* @return void
*
* @since 1.6
*/
protected function populateState($ordering = null, $direction = null)
{
// Load the filter state.
$search = $this->getUserStateFromRequest($this->context . '.filter.search', 'filter_search');
$this->setState('filter.search', $search);
// Load the parameters.
$params = JComponentHelper::getParams('com_users');
$this->setState('params', $params);
// List state information.
parent::populateState('a.lft', 'asc');
}
/**
* Method to get a store id based on model configuration state.
*
* This is necessary because the model is used by the component and
* different modules that might need different sets of data or different
* ordering requirements.
*
* @param string $id A prefix for the store id.
*
* @return string A store id.
*/
protected function getStoreId($id = '')
{
// Compile the store id.
$id .= ':' . $this->getState('filter.search');
$id .= ':' . $this->getState('filter.search');
return parent::getStoreId($id);
}
/**
* Gets the list of groups and adds expensive joins to the result set.
*
* @return mixed An array of data items on success, false on failure.
*
* @since 1.6
*/
public function getItems()
{
$db = $this->getDbo();
// Get a storage key.
$store = $this->getStoreId();
// Try to load the data from internal storage.
if (empty($this->cache[$store]))
{
$items = parent::getItems();
// Bail out on an error or empty list.
if (empty($items))
{
$this->cache[$store] = $items;
return $items;
}
// First pass: get list of the group id's and reset the counts.
$groupIds = array();
foreach ($items as $item)
{
$groupIds[] = (int) $item->id;
$item->user_count = 0;
}
// Get the counts from the database only for the users in the list.
$query = $db->getQuery(true);
// Count the objects in the user group.
$query->select('map.group_id, COUNT(DISTINCT map.user_id) AS user_count')
->from($db->quoteName('#__user_usergroup_map') . ' AS map')
->where('map.group_id IN (' . implode(',', $groupIds) . ')')
->group('map.group_id');
$db->setQuery($query);
// Load the counts into an array indexed on the user id field.
try
{
$users = $db->loadObjectList('group_id');
}
catch (RuntimeException $e)
{
$this->setError($e->getMessage());
return false;
}
// Second pass: collect the group counts into the master items array.
foreach ($items as &$item)
{
if (isset($users[$item->id]))
{
$item->user_count = $users[$item->id]->user_count;
}
}
// Add the items to the internal cache.
$this->cache[$store] = $items;
}
return $this->cache[$store];
}
/**
* Build an SQL query to load the list data.
*
* @return JDatabaseQuery
*/
protected function getListQuery()
{
// Create a new query object.
$db = $this->getDbo();
$query = $db->getQuery(true);
// Select the required fields from the table.
$query->select(
$this->getState(
'list.select',
'a.*'
)
);
$query->from($db->quoteName('#__usergroups') . ' AS a');
// Add the level in the tree.
$query->select('COUNT(DISTINCT c2.id) AS level')
->join('LEFT OUTER', $db->quoteName('#__usergroups') . ' AS c2 ON a.lft > c2.lft AND a.rgt < c2.rgt')
->group('a.id, a.lft, a.rgt, a.parent_id, a.title');
// Filter the comments over the search string if set.
$search = $this->getState('filter.search');
if (!empty($search))
{
if (stripos($search, 'id:') === 0)
{
$query->where('a.id = ' . (int) substr($search, 3));
}
else
{
$search = $db->quote('%' . str_replace(' ', '%', $db->escape(trim($search), true) . '%'));
$query->where('a.title LIKE ' . $search);
}
}
// Add the list ordering clause.
$query->order($db->escape($this->getState('list.ordering', 'a.lft')) . ' ' . $db->escape($this->getState('list.direction', 'ASC')));
return $query;
}
}