static function exists()
{
if (isset(self::$k2_exists)) {
return self::$k2_exists;
}
//self::$k2_exists = JComponentHelper::isEnabled('com_k2', true); // this generates a warning when K2 is missing
/*if (!self::$k2_exists) {
$lang = JFactory::getLanguage();
$lang->load('lib_syw', JPATH_ADMINISTRATOR);
JFactory::getApplication()->enqueueMessage(JText::_('LIB_SYW_DISCARD_MESSAGE'), 'warning');
}*/
self::$k2_exists = true;
$db = JFactory::getDbo();
$query = $db->getQuery(true);
$query->select('extension_id AS id, element AS "option", params, enabled');
$query->from('#__extensions');
$query->where($query->qn('type') . ' = ' . $db->quote('component'));
$query->where($query->qn('element') . ' = ' . $db->quote('com_k2'));
$db->setQuery($query);
$cache = JFactory::getCache('_system', 'callback');
$k2_component = $cache->get(array($db, 'loadObject'), null, 'com_k2', false);
if ($error = $db->getErrorMsg() || empty($k2_component)) {
self::$k2_exists = false;
}
return self::$k2_exists;
}
