Issue #22 quick fix.

Author: judgej

readme.txt

@@ -3,8 +3,8 @@ Contributors: judgej
 Tags: woocommerce, api
 Donate link: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=B4STZL8F5WHK6
 Requires at least: 4.0.0
-Tested up to: 4.4.2
-Stable tag: 0.7.0
+Tested up to: 4.7.5
+Stable tag: 0.7.1
 License: GPL2
 License URI: http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html
 
@@ -24,3 +24,8 @@ Standard installation - whatever you normally do.
 Will only work with WooCommerce with the V2 API at his time, which means any version
 from mid-2015, until the V2 API is eventually removed. It may work with the V3
 API, but that has not been tested.
+
+== Changelog ==
+
+= 0.7.1 =
+* Fix for issue https://github.com/judgej/wc-api-custom-meta/issues/22

wc-api-custom-meta.php

@@ -3,7 +3,7 @@
 Plugin Name: WC API Custom Meta
 Plugin URI:  hhttps://github.com/judgej/wc-api-custom-meta
 Description: Allows access to custom meta fields on products through the API.
-Version:     0.7.0
+Version:     0.7.1
 Author:      Jason Judge
 Author URI:  http://academe.co.uk https://github.com/buxit
 */
@@ -106,7 +106,7 @@ public static function fetchCustomMeta($product_data, $product, $fields, $server
         // We only want users with this capability to see additional product meta fields.
 
         if (current_user_can('manage_woocommerce')) {
-            $product_id = $product->id;
+            $product_id = $product->get_id();
 
             $all_meta = get_post_meta($product_id);