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<?php
/**
* Kunena Component
* @package Kunena.Framework
* @subpackage Forum.Category.User
*
* @copyright (C) 2008 - 2014 Kunena Team. All rights reserved.
* @license http://www.gnu.org/copyleft/gpl.html GNU/GPL
* @link http://www.kunena.org
**/
defined ( '_JEXEC' ) or die ();
/**
* Class KunenaForumCategoryUserHelper
*/
abstract class KunenaForumCategoryUserHelper {
// Global for every instance
protected static $_instances = array();
/**
* Get an instance of KunenaForumCategoryUser object.
*
* @param null|int $category The category id to load.
* @param mixed $user The user id to load - Can be only an integer.
* @param bool $reload Reload objects from the database.
*
* @return KunenaForumCategoryUser The user category object.
*/
static public function get($category = null, $user = null, $reload = false) {
if ($category instanceof KunenaForumCategory) {
$category = $category->id;
}
$category = intval ( $category );
$user = KunenaUserHelper::get($user);
if ($category === null)
return new KunenaForumCategoryUser (null, $user);
if ($reload || empty ( self::$_instances [$user->userid][$category] )) {
$user_categories = KunenaForumCategoryUserHelper::getCategories ( $category, $user );
self::$_instances [$user->userid][$category] = array_pop( $user_categories );
}
return self::$_instances [$user->userid][$category];
}
/**
* Get categories for a specific user.
*
* @param bool|array|int $ids The category ids to load.
* @param mixed $user The user id to load.
*
* @return KunenaForumCategoryUser[]
*/
static public function getCategories($ids = false, $user=null) {
$user = KunenaUserHelper::get($user);
if ($ids === false) {
// Get categories which are seen by current user
$ids = KunenaForumCategoryHelper::getCategories();
} elseif (!is_array ($ids) ) {
$ids = array($ids);
}
// Convert category objects into ids
foreach ($ids as $i=>$id) {
if ($id instanceof KunenaForumCategory) $ids[$i] = $id->id;
}
$ids = array_unique($ids);
self::loadCategories($ids, $user);
$list = array ();
foreach ( $ids as $id ) {
if (!empty(self::$_instances [$user->userid][$id])) {
$list [$id] = self::$_instances [$user->userid][$id];
}
}
return $list;
}
// Internal functions
/**
* Load categories for a specific user.
*
* @param array $ids The category ids to load.
* @param KunenaUser $user
*/
static protected function loadCategories(array $ids, KunenaUser $user) {
foreach ($ids as $i=>$id) {
$iid = intval($id);
if ($iid != $id || isset(self::$_instances [$user->userid][$id]))
unset($ids[$i]);
}
if (empty($ids))
return;
$idlist = implode(',', $ids);
$db = JFactory::getDBO ();
$query = "SELECT * FROM #__kunena_user_categories WHERE user_id={$db->quote($user->userid)} AND category_id IN ({$idlist})";
$db->setQuery ( $query );
$results = (array) $db->loadAssocList ('category_id');
KunenaError::checkDatabaseError ();
foreach ( $ids as $id ) {
if (isset($results[$id])) {
$instance = new KunenaForumCategoryUser ();
$instance->bind ( $results[$id] );
$instance->exists(true);
self::$_instances [$user->userid][$id] = $instance;
} else {
self::$_instances [$user->userid][$id] = new KunenaForumCategoryUser ($id, $user);
}
}
unset ($results);
}
}