title: Adding Custom Meta Data from Products to Orders items in Woocommerce
body: <p>I'm trying to get the Custom Meta data of my woocommerce products to my Order Columns in my Woocommerce Admin but this code wont work on my function.php in Wordpress Theme.</p>
  
  <pre>// Order Get Meta for PD Number
  add_action('woocommerce_add_order_item_meta','adding_custom_data_in_order_items_meta', 1, 3 );
  function adding_custom_data_in_order_items_meta( $post_id, $cart_item_key ) {
  
      // The corresponding Product Id for the item:
      $product_id = $post_id[ 'product_id' ];
      //$pd_number = $post_id['_pd_number'];
      //$pd_number = $_POST['_pd_number'];
      $pd_number = get_post_meta( $post_id[ 'product_id' ], '_pd_number', true );
  
      if ( !empty($pd_number) ) 
          wc_add_order_item_meta($post_id, '_pd_number', $pd_number, true);
  }</pre>
  
  <p>Thanks</p>