Display formated product total and mesurements based on quantity in WooCommerce

Question

I would like some help if possible with some code that i have on my Fabric Store which adds a custom message to help the customer how much fabric they are ordering.

You can see here how the message is presented and changes with the change of quantity: https://thefabricboutique.co.uk/product/pastel-abstract-viscose-linen-blend/

Add 0.5 metre for £6.25

I would like to know how to change this to the following code:

Add 1 unit for 0.5 metre (£6.25 for 0.5 metre)

So just adding 'Add 1 unit' (With the 1 changing as the quantity changes) And the brackets for the price. Which has a duplicated metre change feature from the first part.

add_action( 'woocommerce_before_add_to_cart_quantity', 'display_product_total_amount_html' );
function display_product_total_amount_html() {
    global $product;
    if( ! has_term( array('fabric'), 'product_cat', $product->get_id() ) ) return;
    
    $metres_per_qty  = 0.5;
    $display_price   = wc_get_price_to_display($product);
    $formatted_price = '<span class="price-amount">'. number_format($display_price, 2) . '</span>';

    // Output product total price amount
    $price_string = sprintf( __('Add %s for %s', 'woocommerce'),  
        '<span class="qty-metres">' . $metres_per_qty . ' metre</span>',
        str_replace('0.00', $formatted_price, wc_price(0)) );

    // Output product total price amount
    echo '<div class="total-price_qty" style="margin-bottom:20px;">'.$price_string.'</div>'
    ?>
    <script>
    jQuery(function($){
        $('input[name=quantity]').on( 'input change', function(){
            const qty = $(this).val();
            if ( qty != 0 ) {
                const lengthTxt = qty > 2 ? ' metres' : ' metre';
                $('.total-price_qty .price-amount').html( parseFloat(<?php echo $display_price; ?> * qty).toFixed(2) );
                $('.total-price_qty .qty-metres').html( parseFloat(<?php echo $metres_per_qty; ?> * qty)+lengthTxt );
            }
        });
    });
    </script>
    <?php 
}

I've tried to re-code it myself without success.

Answer 1

Replace your code with the following:

add_action( 'woocommerce_before_add_to_cart_quantity', 'display_product_total_amount_html' );
function display_product_total_amount_html() {
    global $product;
    if( !has_term( array('fabric'), 'product_cat', $product->get_id() ) ) return;
    
    $metres_per_qty  = 0.5;
    $display_price   = wc_get_price_to_display($product);
    $formatted_price = '<span class="price-amount">'. number_format($display_price, 2) . '</span>';

    // Output product total price amount
    $price_string = sprintf( __('Add %s for %s (%s for %s)', 'woocommerce'),
        '<span class="qty-units">1 unit</span>', 
        '<span class="qty-metres">' . $metres_per_qty . ' metre</span>',
        str_replace('0.00', $formatted_price, wc_price(0)), 
        '<span class="qty-metre2">' . $metres_per_qty . ' metre</span>' );

    // Output product total price amount
    echo '<div class="total-price_qty" style="margin-bottom:20px;">'.$price_string.'</div>'
    ?>
    <script>
    jQuery(function($){
        $('input[name=quantity]').on( 'input change', function(){
            const qty = $(this).val();
            if ( qty != 0 ) {
                const qtyTxt    = qty > 2 ? ' units' : ' unit',
                      lengthTxt = qty > 2 ? ' metres' : ' metre';
                $('.total-price_qty .qty-units').html( parseInt(qty)+qtyTxt );
                $('.total-price_qty .price-amount').html( parseFloat(<?php echo $display_price; ?> * qty).toFixed(2) );
                $('.total-price_qty .qty-metres, .total-price_qty .qty-metre2').html( parseFloat(<?php echo $metres_per_qty; ?> * qty)+lengthTxt );
            }
        });
    });
    </script>
    <?php 
}

You will get something like:

Related: Display formated WooCommerce product total based on quantity above add to cart button