Add extra details Woocommerce order edit pages in admin

Question

Hi I am using Woocommerce version 3.2.6. We have some orders.

I want to add one extra details to orders when the product id is 123 in the order edit page in wordpress backend.

I wanto add this:

<a href="http://example.com/new-view/?id=<?php echo $order_id?;>">Click here to view this</a>

ie: We have order[order id =3723] , and the ordered item id is 123.

Then in http://example.com/wp-admin/post.php?post=3723&action=edit, I want to add the following link below the corresponding item details:

"<a href="http://example.com/new-view/?id=<?php echo $order_id?;>">Click here to view this</a>"

How we can do this ?

Which hook is suitable for this. Actually I am searching in https://docs.woocommerce.com/wc-apidocs/hook-docs.html.

And I found Class WC_Meta_Box_Order_Items. But i don't know how to use this.

Answer 1

The correct code for WooCommerce version 3+ to add a custom link just after line items and only on backend is:

add_action( 'woocommerce_after_order_itemmeta', 'custom_link_after_order_itemmeta', 20, 3 );
function custom_link_after_order_itemmeta( $item_id, $item, $product ) {
    // Only for "line item" order items
    if( ! $item->is_type('line_item') ) return;

    // Only for backend and  for product ID 123
    if( $product->get_id() == 123 && is_admin() )
        echo '<a href="http://example.com/new-view/?id='.$item->get_order_id().'">'.__("Click here to view this").'</a>';
}

Tested and works

1) Important: Limit the code to order items "line item" type only, to avoid errors on other order items like "shipping", "fee", "discount"...

2) From the WC_Product object to get the product id you will use WC_Data get_id() method.

3) To get the Order ID from WC_Order_Item_Product object you will use WC_Order_Item method get_order_id().

4) You need to add is_admin() in the if statement to restrict the display in backend.