if ($savevisibility) {
require_capability('mod/publication:approve', $context);
$files = optional_param_array('files', array(), PARAM_INT);
$sql = 'UPDATE {publication_file} SET teacherapproval=:approval WHERE publication=:pubid AND fileid IN ';
$params = array();
$params['pubid'] = $publication->get_instance()->id;
foreach ($files as $fileid => $val) {
$val = $val - 1;
if ($val == -1) {
$val = null;
}
$DB->set_field('publication_file', 'teacherapproval', $val, array('fileid' => $fileid));
}
} else {
if ($action == "zip") {
$publication->download_zip(true);
} else {
if ($action == "zipusers") {
$users = optional_param_array('selectedeuser', false, PARAM_INT);
if (!$users) {
// No users selected.
header("Location: view.php?id=" . $id);
die;
}
$users = array_keys($users);
$publication->download_zip($users);
} else {
if ($action == "import") {
require_capability('mod/publication:approve', $context);
require_sesskey();
if (!isset($_POST['confirm'])) {
