-my $from_iso = C4::Dates->new($input->param('from'))->output('iso') if $input->param('from');
-my $to_iso = C4::Dates->new($input->param('to'))->output('iso') if $input->param('iso');
-my ( $order_loop, $total_qty, $total_price, $total_qtyreceived ) =
- &GetHistory( $title, $author, $name, $from_iso, $to_iso );
-
+my ( $from_iso, $to_iso, $d );
+if ( $d = $input->param('from') ) {
+ $from_iso = C4::Dates->new($d)->output('iso');
+}
+if ( $d = $input->param('iso') ) {
+ $to_iso = C4::Dates->new($d)->output('iso');
+}
+
+my ( $order_loop, $total_qty, $total_price, $total_qtyreceived );
+# If we're supplied any value then we do a search. Otherwise we don't.
+if ($do_search) {
+ ( $order_loop, $total_qty, $total_price, $total_qtyreceived ) = GetHistory(
+ title => $title,
+ author => $author,
+ isbn => $isbn,
+ ean => $ean,
+ name => $name,
+ from_placed_on => $from_iso,
+ to_placed_on => $to_iso,
+ basket => $basket,
+ booksellerinvoicenumber => $booksellerinvoicenumber,
+ basketgroupname => $basketgroupname,
+ );
+}
+
+my $from_date = $from_placed_on ? $from_placed_on->output('syspref') : undef;
+my $to_date = $to_placed_on ? $to_placed_on->output('syspref') : undef;
+