# ritorna un array di prodotti rappresentati
# come hash da attributi del prodotto a valori
sub get_products {
    my $product_list = get_list($products_xml);
    my @products = ();
    foreach my $p ($product_list->findnodes('//ns:product')) {
        my @ingredients = $p->findnodes("ns:ingredient_list//ns:ingredient");
        my %product = {
            'product_id' => $p->findvalue('ns:product_id'),
            'name' => $p->findvalue('ns:name'),
            'description' => $p->findvalue('ns:description'),
            'price' => $p->findvalue('ns:price'),
            'picture' => img_path($p->findvalue('ns:picture')),
            'ingredients' => @ingredients
        };
        push(%product, @products);
    }
}