Woocommerce How to Display Sale Price of Products in Cart

Question

I have set up my cart to display the product price with a strikethrough next to the sale price of the discounted item (see first product in cart in photo).

checkout screenshot

This was achieved using this code

function my_custom_show_sale_price_at_cart( $old_display, $cart_item, $cart_item_key ) {

$product = $cart_item['data'];

if ( $product ) {
    return $product->get_price_html();
}

return $old_display;

}
add_filter( 'woocommerce_cart_item_price', 'my_custom_show_sale_price_at_cart', 10, 3 );

The issue as you can see in the photo is that this only works for products on sale (the $12.00 product on sale for 0.00). However, a coupon code is applied to the other two items.

I followed this thread to display the total savings as "You Saved" in the checkout summary, including sale and coupon discounts.

How can I display the discounted price of the items in the cart that have the coupon applied to them?

Answer 1

So this will update the cart item totals and the line item totals based on what I interpreted your comments to be.

This would be added to functions.php

function my_custom_show_sale_price_at_cart( $old_display, $cart_item, $cart_item_key ) {
    $product = $cart_item['data'];
    // If you just want this to show in checkout vs cart + checkout - add && is_checkout() below.
    if ( $product ) {
        // This item has a coupon applied.
        if ( floatval( $product->get_price() ) !== number_format( $cart_item['line_total'], 2 ) / $cart_item['quantity'] ) {
            // This updates the line item sub-total.
            add_filter(
                'woocommerce_cart_item_subtotal',
                function() use ( $cart_item ) {
                    return wc_price( $cart_item['line_total'] );
                }
            );
            // This updates the item total.
            return wc_format_sale_price( $product->get_regular_price(), number_format( $cart_item['line_total'], 2 ) ) . $product->get_price_suffix();
        }
        return $product->get_price_html();
    }

    return $old_display;

}
add_filter( 'woocommerce_cart_item_price', 'my_custom_show_sale_price_at_cart', 10, 3 );