yith request a quote view to get attribute values into quote table aka woocomerce cart

yith-request-quote-view-attributes.php

<?php 
/**
 * Get product attributes to display on yith-quote table
 * @param string $attribute_name Taxonomy name
 * @param string $product_id     Global value
 * @return array                 Attribute value
 */
function betheme_child_get_product_terms_carton( $attribute_name, $product_id )
{

    $object_id = wc_attribute_taxonomy_id_by_name($attribute_name); 

    $attribute_key = wc_attribute_taxonomy_name($attribute_name);
    $product_terms = wc_get_product_terms($product_id, $attribute_key, array('fields' => 'names'));

     // check if not empty, then display
     if (!empty($product_terms)) {

         $attribute = array_shift($product_terms);
         return $attribute;
     } else {

         // no attribute under this name
         return 'na';
     }
} 
// Validate (optional)
function betheme_child_valid_attribute_name( $attribute_name ) {
    if ( strlen( $attribute_name ) >= 28 ) {
            return new WP_Error( 'error', sprintf( __( 'Slug "%s" is too long (28 characters max). Shorten it, please.', 'woocommerce' ), sanitize_title( $attribute_name ) ) );
    } elseif ( wc_check_if_attribute_name_is_reserved( $attribute_name ) ) {
            return new WP_Error( 'error', sprintf( __( 'Slug "%s" is not allowed because it is a reserved term. Change it, please.', 'woocommerce' ), sanitize_title( $attribute_name ) ) );
    }

    return true;
}
/**
 * Get product attributes to display on yith-quote table
 * ********************************************************************************
 * (These lines go in the "request-quote-view.php" template in a woocommerce folder
 * after td class="product-name" first 'endif'. Approx. line 208.)
 * ********************************************************************************
 */
$first_carton_cnt_label     = wc_attribute_label('pa_carton-count');  
$first_cartons_pallet_label = wc_attribute_label('pa_cartons-per-pallet');  
$first_carton_value         = betheme_child_get_product_terms_carton( 'carton-count', $product_id );
$first_pallet_value     = betheme_child_get_product_terms_carton( 'cartons-per-pallet', $product_id );

if ( $first_carton_value > 0 ) { 
    echo '<p>' . esc_html($first_carton_cnt_label) . ': </span><span>' . absint($first_carton_value) . '</span>
	<span class="delim"> | </span>
	<span>' . esc_html($first_cartons_pallet_label) . ': </span><span>' . esc_html($first_pallet_value) . '</span></p>';
	echo '
	<input type="hidden" name="carton_cnt_label_'. esc_attr($product_id) .'" 
		value="' . intval($first_carton_cnt_label) . '" id="first_carton_cnt_label_'. esc_attr($product_id) .'">
	<input type="hidden" name="cartons_pallet_label_'. esc_attr($product_id) .'" 
		value="' . intval($first_pallet_label) . '" id="first_cartons_pallet_label_'. esc_attr($product_id) .'">
	<input type="hidden" name="carton_cnt_value_'. esc_attr($product_id) .'" 
		value="' . intval($first_carton_val) . '" id="first_carton_cnt_value_'. esc_attr($product_id) .'">
	<input type="hidden" name="cartons_pallet_value_'. esc_attr($product_id) .'" 
		value="' . intval($first_pallet_val) . '" id="first_cartons_pallet_value_'. esc_attr($product_id) .'">';
}else{
    print("");
}