WooCommerce | Display the shipping class of items in the cart, and change shipping methods (and verbiage) based on the shipping classes in the cart

woocommerce-shipping-class-in-shopping-cart.php

<?php

/**
 * Hide a Flat Rate option (instance #7) when the "Call for Quote" shipping class is in the cart
 * from: https://www.bolderelements.net/support/knowledgebase/hide-shipping-method-when-cart-contains-shipping-class/
 */
function fs_hide_shipping_when_class_is_in_cart( $rates, $package ) {
    // shipping class IDs (slugs) that need the method removed
    $shipping_classes = array('call-for-quote');
    $if_exists = false;
 
    foreach( $package['contents'] as $key => $values ) {
        if( in_array( $values[ 'data' ]->get_shipping_class(), $shipping_classes ) )
            $if_exists = true;
    }
 
    if( $if_exists ) unset( $rates['flat_rate:4'] );
 
    return $rates;
}
add_filter( 'woocommerce_package_rates', 'fs_hide_shipping_when_class_is_in_cart', 10, 2 );


/**
 * Change the verbiage if/when there is "No Shipping methods available"
 * from: https://aceplugins.com/doc/advanced-shipping-for-woocommerce/how-to-change-the-no-shipping-methods-available-message/
 */
add_filter( 'woocommerce_no_shipping_available_html', 'fs_custom_no_shipping_message' );
add_filter( 'woocommerce_cart_no_shipping_available_html', 'fs_custom_no_shipping_message' );
function fs_custom_no_shipping_message( $message ) {
	return __( 'Please call 800-634-0344 to request a quote. Otherwise, remove the item from the cart that isn\'t shippable.' );
}


/**
 * Add the shipping class to the bottom of each item in the cart
 * from: https://wordpress.stackexchange.com/questions/291637/woocommerce-add-shipping-class-below-each-product-in-shopping-cart-page
 */
add_filter( 'woocommerce_cart_item_name', 'shipping_class_in_item_name', 20, 3);
function shipping_class_in_item_name( $item_name, $cart_item, $cart_item_key ) {
// Only in cart page (remove the line below to allow the display in checkout too)
if( ! ( is_cart() || is_checkout() ) ) return $item_name;

$product = $cart_item['data']; // Get the WC_Product object instance
$shipping_class_id = $product->get_shipping_class_id(); // Shipping class ID
$shipping_class_term = get_term( $shipping_class_id, 'product_shipping_class' );

if( empty( $shipping_class_id ) )
    return $item_name; // Return default product title (in case of)
  
if ( ( $shipping_class_term->slug == 'flat-1995-per' ) || ( $shipping_class_term->slug == 'flat-4999-per' ) ) {
  	$prefix = '$';
	$suffix = 'each';
}

$label = __( 'Shipping', 'woocommerce' );

return $item_name . '<br>
    <p class="item-shipping_class" style="margin:0.25em 0 0; font-size: 0.875em;">
        <em>' .$label . ': </em>' . $prefix . $shipping_class_term->name . ' ' . $suffix . '</p>';
}