if ( $shelf ) {
$op = $referer;
my $sortfield = $query->param('sortfield');
- $sortfield = 'title' unless grep {/^$sortfield$/}qw( title author copyrightdate itemcallnumber );
+ $sortfield = 'title' unless grep {/^$sortfield$/}qw( title author copyrightdate itemcallnumber dateadded );
if ( $shelf->can_be_managed( $loggedinuser ) ) {
$shelf->shelfname( scalar $query->param('shelfname') );
$shelf->sortfield( $sortfield );