How to get the variation shipping class in Woocommerce - php

Question

I would like to display variable products shipping class set for each variant.
I realize that I may need to have a mix of php and Javascript but I would like to get the PHP side right first.
I am guessing the best way to start is to use:
if( $product->is_type( 'simple' ) ) {
$product = wc_get_product();
$shipping_class = $product->get_shipping_class();
} elseif( $product->is_type( 'variable' ) ) {
$product = wc_get_product();
$shipping_class = $product->get_shipping_class();
}
But I am not sure how to get the product variant shipping class or if I am doing this correctly. Looking into wc_get_product_variation or variation to see if it has the answer.
Any help would be appreciated possibly display all as an array and use javascript to hide the selected.
How do I get the variant shipping class?

Answer 1

To get the variations shipping classes of a defined variable product Id, two ways:
1) Using wp_get_post_terms() function for product_shipping_class taxonomy:
// Get the WC_Product_Variable instance Object (if needed)
$product = wc_get_product( $product_id );
// Initializing
$shipping_classes = array();
// Loop through the visible variations IDs
foreach ( $product->get_visible_children() as $variation_id ) {
// Get the variation shipping class WP_Term object
$term = wp_get_post_terms( $variation_id, 'product_shipping_class' );
if( empty($term) ) {
// Get the parent product shipping class WP_Term object
$term = wp_get_post_terms( $product->get_id(), 'product_shipping_class' );
// Set the shipping class slug in an indexed array
$shipping_classes[$variation_id] = $term->slug;
}
}
// Raw output (for testing)
var_dump($shipping_classes);
This will give you an array of variation Id / shipping class pairs.
2) Using get_shipping_class_id() WC_Product method:
// Get the WC_Product_Variable instance Object (if needed)
$product = wc_get_product( $product_id );
// Initializing
$shipping_classes = array();
// Loop through the visible variations IDs
foreach ( $product->get_visible_children() as $variation_id ) {
// Get the Product Variation instance Object
$variation = wc_get_product($variation_id);
// Get the shipping class ID
$term_id = $variation->get_shipping_class_id();
// The shipping class WP_Term Object
$term = get_term_by('term_id', $term_id, 'product_shipping_class');
// Set the shipping class slug in an indexed array
$shipping_classes[$variation_id] = $term->slug;
}
// Raw output (for testing)
var_dump($shipping_classes);