How can I display text after the price of products of a certain category in the woocommerce cart without affecting the final price?

Question

PHP

Good day to all. I ran into one issue while studying woocommerce. I'm making a small shop that will have beer and snacks. There are 2 categories of beer & snack products. The question is actually what. How can I display text in the cart after the price of goods of a certain category without affecting the final price. Let's say after the price for beer indicate that this is the price per liter. And in the price for a snack, indicate what it is for 50 grams. A photo is attached to make my question clearer. And another small question: how can I add the unit of measurement in the input in the basket to the quantity of the beer category (l.) and to the quantity of the snack category (gr.)?

Answer 1

I don’t know how you store units, so I’ll assume that the meta field is _product_units , then we do this.

function wpp_add_units_after_price_in_cart( $price, $cart_item, $cart_item_key ) {
        
        // если единицы измерения хранятся не в в мета поле _product_units, тут получаем их
         //   из места их хранения по своему
        $units = get_post_meta( $cart_item['product_id'], '_product_units', true );
        
        if ( ! empty( $units ) ) {
            $price .=  ' ' . $units ;
        }
        return $price;
    }
    add_filter( 'woocommerce_cart_item_price', 'wpp_add_units_after_price_in_cart', 10, 3 );

Answer 2

As far as I remember, in the settings there seem to be units of measurement in the settings of woocommerce itself (I won’t send it in the exact direction, because I haven’t encountered the admin panel for a long time).