/**
* Common tasks for all actions.
*/
public function before_filter(&$action, &$args)
{
parent::before_filter($action, $args);
// user must have root permission
$GLOBALS['perm']->check('root');
// set navigation
Navigation::activateItem('/admin/config/datafields');
PageLayout::setTitle(_('Verwaltung von generischen Datenfeldern'));
// Set variables used by (almost) all actions
$this->allclasses = DataField::getDataClass();
$this->class_filter = Request::option('class_filter', null);
$this->createSidebar($action);
}
