Elgg-Lorea-Hydra/mod/file_tools/actions/file/hide.php

<?php

$action = get_input('hide');
$file_guid = get_input('guid');

if (($file = get_entity($file_guid)) && ($file->getSubtype() == 'file')) {
	if ($file->canEdit()) {
		if ($action == 'show') {
			$file->show_in_widget = time();
		} elseif ($action == 'hide') {
			unset($file->show_in_widget);
		}
		
		$file->save();
	}
}

$options = array(
	"type" => "object",
	"subtype" => FILE_TOOLS_SUBTYPE,
	"container_guid" => $file->getOwnerGUID(),
	"limit" => false,
	"relationship" => FILE_TOOLS_RELATIONSHIP,
	"relationship_guid" => $file->getGUID(),
	"inverse_relationship" => true
);

if (stristr($_SERVER["HTTP_REFERER"], "file")) {

	if ($folders = elgg_get_entities_from_relationship($options)) {
		$folder = $folders[0];
		
		forward($folder->getURL());
	}
}

forward(REFERER);