/**
* Load a template helper
*
* This function merges the elements of the attached view model state with the parameters passed to the helper
* so that the values of one are appended to the end of the previous one.
*
* If the view state have the same string keys, then the parameter value for that key will overwrite the state.
*
* @param string Name of the helper, dot separated including the helper function to call
* @param mixed Parameters to be passed to the helper
* @return string Helper output
*/
public function renderHelper($identifier, $params = array())
{
$view = $this->getView();
if (KInflector::isPlural($view->getName())) {
if ($state = $view->getModel()->getState()) {
$params = array_merge($state->getData(), $params);
}
} else {
if ($item = $view->getModel()->getItem()) {
$params = array_merge($item->getData(), $params);
}
}
return parent::renderHelper($identifier, $params);
}
/**
* Returns a directory path for temporary files
*
* Additionally checks for Joomla tmp folder if the system directory is not writable
*
* @throws KTemplateException
* @return string Folder path
*/
protected function _getTemporaryDirectory()
{
if (!self::$_temporary_directory) {
$result = false;
$candidates = array(ini_get('upload_tmp_dir'), JPATH_ROOT . '/tmp');
if (function_exists('sys_get_temp_dir')) {
array_unshift($candidates, sys_get_temp_dir());
}
foreach ($candidates as $folder) {
if ($folder && @is_dir($folder) && is_writable($folder)) {
$result = rtrim($folder, '\\/');
break;
}
}
if ($result === false) {
throw new KTemplateException('Cannot find a writable temporary directory');
}
self::$_temporary_directory = $result;
}
return self::$_temporary_directory;
}
