my %tt_food;

foreach my $key ( sort { $brevet_config{$a}{sort_date} <=> $brevet_config{$b}{sort_date} }  keys %brevet_config ) {
    
    $tt_food{$brevet_config{$key}{sort_date}} = $brevet_config{$key};
}

my $vars = {
    brevets => \%tt_food,
};

$template->process( 'schedule.tt2', $vars ) or die $template->error();