How to Customize Sample Product Order Variables: PRODUCT_TYPE and SAMPLE_PRICE

When a customer orders sample products from your store, the PRODUCT_TYPE and SAMPLE_PRICE custom order variables are added to identify and distinguish sample products from regular ones. These variables are displayed on various sections such as the order edit screen, order emails, and the "My Account" page.

This guide explains how to:

1. Modify the text of these custom variables (e.g., changing PRODUCT_TYPE to "Product Type").
2. Hide these variables entirely from the order details, if needed.

1. Modify the Text of Sample Order Variables

To change the text of the PRODUCT_TYPE and SAMPLE_PRICE variables, add the following code to your theme’s functions.php file:

// Update sample order meta keys
if ( ! function_exists( 'dsfps_update_sample_order_item_meta' ) ) {
    function dsfps_update_sample_order_item_meta( $display_key, $meta ) {
        // Modify the display text of sample product meta keys
        if ( $meta->key === 'PRODUCT_TYPE' ) {
            return 'Product Type'; // Change 'Product Type' as needed
        } elseif( $meta->key === 'SAMPLE_PRICE' ) {
            return 'Sample Price'; // Change 'Sample Price' as needed
        }
        return $display_key;
    }

    add_filter( 'woocommerce_order_item_display_meta_key', 'dsfps_update_sample_order_item_meta', 10, 2 );
}

Feel free to adjust the text in the above code according to your requirements.

2. Completely Hide Sample Order Variables

If you prefer to hide the PRODUCT_TYPE and SAMPLE_PRICE variables from displaying in all locations, add the following code to your theme’s functions.php file:

// Hide sample order meta keys
if ( ! function_exists( 'dsfps_hide_samples_custom_order_item_meta' ) ) {
    function dsfps_hide_samples_custom_order_item_meta( $formatted_meta, $item ) {
        if ( ! empty( $formatted_meta ) && is_array( $formatted_meta ) ) {
            foreach ( $formatted_meta as $key => $value ) {
                if ( isset( $value->key ) && ( $value->key === 'PRODUCT_TYPE' || $value->key === 'SAMPLE_PRICE' ) ) {
                    unset( $formatted_meta[ $key ] ); // Remove the meta item
                }
            }
        }
        return $formatted_meta;
    }

    add_filter( 'woocommerce_order_item_get_formatted_meta_data', 'dsfps_hide_samples_custom_order_item_meta', 10, 2 );
}

This code will completely hide the custom sample product variables from all areas of the store.