public function makeStickyForm($form_name)
{
$this->clearStickyForm($form_name);
$banned_keys = [];
// TODO make $banned_keys an argument
if (in_array($form_name, ['register', 'useradd', 'usersettings'])) {
$banned_keys = ['password', 'password2'];
}
$session = _elgg_services()->session;
$data = $session->get('sticky_forms', array());
$req = _elgg_services()->request;
// will go through XSS filtering in elgg_get_sticky_value()
$vars = array_merge($req->query->all(), $req->request->all());
foreach ($banned_keys as $key) {
unset($vars[$key]);
}
$data[$form_name] = $vars;
$session->set('sticky_forms', $data);
}