# in the App:
if ($sth->rows == 0) {
    $data->{'people'}=$th->people_none();
    return;
}
my @people;
while (my $r=$sth->fetchrow_hashref) {
    push(@people,$th->person($r);
}
$data->{'people'}=@people;
return;

# template people_none.tpl
<td colspan=3 class="warning">No people found</td>

# template person.tpl
<tr><td>[% last_name %]</td>
<td>[% first_name %]</td>
<td>[% department %]</td></tr>