我使用WooCommerce和捆绑产品插件来显示一个页面，人们可以在其中选择配置产品的选项。每个选项都是一个有变化的产品。为了获得所有4种产品的变体，我使用下面的代码。在我升级到WC3（oops）之前，它一直工作得很好。现在我得到一个错误，sku是空的。我是否需要改变从产品中获取SKU的方式？
do_action( 'woocommerce_before_bundled_items', $product );
foreach ( $bundled_items as $bundled_item ) {
/**
* 'woocommerce_bundled_item_details' hook
*
* @hooked wc_pb_template_bundled_item_details_wrapper_open - 0
* @hooked wc_pb_template_bundled_item_thumbnail - 5
* @hooked wc_pb_template_bundled_item_details_open - 10
* @hooked wc_pb_template_bundled_item_title - 15
* @hooked wc_pb_template_bundled_item_description - 20
* @hooked wc_pb_template_bundled_item_product_details - 25
* @hooked wc_pb_template_bundled_item_details_close - 30
* @hooked wc_pb_template_bundled_item_details_wrapper_close - 100
*/
do_action( 'woocommerce_bundled_item_details', $bundled_item, $product );
$variations = $bundled_item->get_product_variations();
foreach($variations as $variation) {
if($variation['sku'] == 'colors') {
$bi['colors'] = $bundled_item;
continue 2;
}
if($variation['sku'] == 'material') {
$bi['material'] = $bundled_item;
continue 2;
}
if($variation['sku'] == 'corners') {
$bi['corners'] = $bundled_item;
continue 2;
}
if($variation['sku'] == 'text') {
$bi['text'] = $bundled_item;
continue 2;
}
}
do_action( 'woocommerce_after_bundled_items', $product );
}
此代码在3.0中适用于我，用于查找每个捆绑商品的变体的SKU，或没有变体的捆绑商品的SKU：
//Check for Variation ID first & use Variation, if it exists
$product_variation_id = $bundled_item->get_variation_id();
// Check if product has variation.
if ($product_variation_id){
$product = new WC_Product_Variation($product_variation_id);
}else{
$product = $bundled_item->get_product();
}
$sku = $product->get_sku();
