Showing sale prices in the cart

// Showing sale prices in the cart
add_filter( 'woocommerce_cart_item_price', 'tzn_cart_table_price_sale_display', 30, 3 );
function tzn_cart_table_price_sale_display( $price, $values, $cart_item_key ) {
    $slashed_price = $values['data']->get_price_html();
    $is_on_sale = $values['data']->is_on_sale();
    if ( $is_on_sale ) {
        $price = $slashed_price;
    }
    return $price;
}