Since we can apply different coupons to each product in an order,
Is there any method to know which coupon is applied to which product?
I've used $order->get_used_coupons() function but it just returns the used coupon codes only.
Please help with a solution. Thanks.
Example made for Woocommerce 2.5.x on June 2016 (Will not work in Woocommerce 3+)
This example is based on compiled searches:
function wc_my_order_coupons( $order_id ) {
$order = new WC_Order( $order_id );
// checking if order has some used coupons
if( sizeof($order->get_used_coupons()) > 0 ) {
foreach( $order->get_used_coupons() as $coupon_code ) {
// Retrieving the coupon ID
$post_obj = get_page_by_title($coupon_code, OBJECT, 'shop_coupon');
$coupon_id = $post_obj->ID;
// here is a list of most all data that you can use for a coupon
$cp_discount_type = get_post_meta( $coupon_id, 'discount_type', true );
$cp_amount = get_post_meta( $coupon_id, 'coupon_amount', true );
$cp_indiv_use = get_post_meta( $coupon_id, 'individual_use', true );
$cp_products = get_post_meta( $coupon_id, 'product_ids' );
$cp_excl_products = get_post_meta( $coupon_id, 'exclude_product_ids' );
$cp_usage_limit = get_post_meta( $coupon_id, 'usage_limit', true );
$cp_expiry_date = get_post_meta( $coupon_id, 'expiry_date', true );
$cp_apply_before_tax = get_post_meta( $coupon_id, 'apply_before_tax', true );
$cp_free_shipping = get_post_meta( $coupon_id, 'free_shipping', true );
// Getting the products in this order_id
$items = $order->get_items();
foreach ($items as $key => $item) {
$product_name = $item['name'];
$product_id = $item['product_id'];
// Example: we use product_ids authorized in the coupon $cp_products
if (in_array($product_id, $cp_products)) {
echo $product_name . 'uses the coupon: ' . $coupon->code . '<br>';
}
}
}
}
}
References :
来源：https://stackoverflow.com/questions/37760588/how-to-check-which-coupon-is-applied-to-which-product-in-woocommerce