Ušetříte do pokladny

gistfile1.txt

add_action('woocommerce_cart_totals_before_order_total', 'wc_discount_total', 99);

add_action('woocommerce_review_order_before_order_total', 'wc_discount_total', 99);

function wc_discount_total()
{
	global $woocommerce;
	$discount_total = 0;

	foreach ($woocommerce->cart->get_cart() as $cart_item_key => $values) {

		$_product = $values['data'];

		if ($_product->is_on_sale()) {
			$regular_price = $_product->get_regular_price();
			$sale_price = $_product->get_sale_price();
			$discount = ($regular_price - $sale_price) * $values['quantity'];
			$discount_total += $discount;
		}
	}
	if ($discount_total > 0) {
		echo '<tr class="cart-discount">
      <th>' . __('Nákupem ušetříte', 'woocommerce') . '</th>
      <td data-title=" ' . __('You Saved', 'woocommerce') . ' ">'
		     . wc_price($discount_total + $woocommerce->cart->discount_cart) . '</td>
      </tr>';


	}
}