+sub get_chart_balances {
+ $main::lxdebug->enter_sub();
+
+ my $self = shift;
+ my %params = @_;
+
+ Common::check_params(\%params, qw(charts));
+
+ my $myconfig = \%main::myconfig;
+ my $form = $main::form;
+
+ my $dbh = $params{dbh} || $form->get_standard_dbh($myconfig);
+
+ my @ids = map { $_->{id} } @{ $params{charts} };
+
+ if (!@ids) {
+ $main::lxdebug->leave_sub();
+ return;
+ }
+
+ my $query = qq|SELECT chart_id, SUM(amount) AS sum
+ FROM acc_trans
+ WHERE chart_id IN (| . join(', ', ('?') x scalar(@ids)) . qq|)
+ GROUP BY chart_id|;
+
+ my %balances = selectall_as_map($form, $dbh, $query, 'chart_id', 'sum', @ids);
+
+ foreach my $chart (@{ $params{charts} }) {
+ $chart->{balance} = $balances{ $chart->{id} } || 0;
+ }
+
+ $main::lxdebug->leave_sub();
+}
+
+