Title: WooCommerce API Last modified: October 26, 2018 --- # WooCommerce API * Resolved [slimschip](https://wordpress.org/support/users/slimschip/) * (@slimschip) * [7 years, 6 months ago](https://wordpress.org/support/topic/woocommerce-api-6/) * Hi, * I am in the process of creating a program that talks to the WooCommerce REST API and I am trying to get the EAN data stored by this pluging via the “products” endpoint. * It it possible to get this data using the REST API and can you tell me how? * Kind regrads, * Martijn Viewing 14 replies - 1 through 14 (of 14 total) * Plugin Author [Emanuela Castorina](https://wordpress.org/support/users/kreamweb/) * (@kreamweb) * [7 years, 6 months ago](https://wordpress.org/support/topic/woocommerce-api-6/#post-10818699) * Hello, the EAN code it is a custom field this is the name ‘_wpm_gtin_code’ You should search how get custom fields with WooCommerce Rest API. * Thread Starter [slimschip](https://wordpress.org/support/users/slimschip/) * (@slimschip) * [7 years, 6 months ago](https://wordpress.org/support/topic/woocommerce-api-6/#post-10818933) * Hi Emanuela, * When I search on how to get custom fields I run into circles and php code I do not understand (I’m a pyhon devoloper), but seem related to the way the php api works and how to handle the return data. * when I do a get on “products?filter[meta]=true” I do get the “product_meta” but no _wpm_gtin_code, in some places I see that “protected” values (starting with“_”) are not shown. * I have searched the API docs and tried google before I posted my question to you. * I try to get the value in the response for a get. thats is all. * Any hint beyond “search how to get custom fields” would be highly appreciated. * Kind regards, * Martijn - This reply was modified 7 years, 6 months ago by [slimschip](https://wordpress.org/support/users/slimschip/). * Plugin Author [Emanuela Castorina](https://wordpress.org/support/users/kreamweb/) * (@kreamweb) * [7 years, 6 months ago](https://wordpress.org/support/topic/woocommerce-api-6/#post-10818952) * I’ve never worked with Rest API but I found this that you can try * ``` add_filter( 'woocommerce_rest_prepare_product', 'custom_products_api_data', 90, 2 ); function custom_products_api_data( $response, $post ) { // retrieve a custom field and add it to API response $response->data['ean_code'] = get_post_meta( $post->ID, '_wpm_gtin_code', true ); return $response; } ``` * [https://wordpress.stackexchange.com/questions/308591/woocommerce-product-custom-field](https://wordpress.stackexchange.com/questions/308591/woocommerce-product-custom-field) * Thread Starter [slimschip](https://wordpress.org/support/users/slimschip/) * (@slimschip) * [7 years, 6 months ago](https://wordpress.org/support/topic/woocommerce-api-6/#post-10818968) * I have found that one too, there is no reference on where to add that code …. * As said I am not familiar with php development. * To me the whole issue is with the “_” at the start of “_wpm_gtin_code” as a fieldname in the wp_postmeta as that is a “protected” field. in the first place. * Martijn * Plugin Author [Emanuela Castorina](https://wordpress.org/support/users/kreamweb/) * (@kreamweb) * [7 years, 6 months ago](https://wordpress.org/support/topic/woocommerce-api-6/#post-10818974) * Put the script in the file functions.php of your theme. * Thread Starter [slimschip](https://wordpress.org/support/users/slimschip/) * (@slimschip) * [7 years, 6 months ago](https://wordpress.org/support/topic/woocommerce-api-6/#post-10818982) * a bit off-topic, but wouldn’t that be overwitten by an update of the theme? that seems to be the case every time when there is a WC update. * Plugin Author [Emanuela Castorina](https://wordpress.org/support/users/kreamweb/) * (@kreamweb) * [7 years, 6 months ago](https://wordpress.org/support/topic/woocommerce-api-6/#post-10818984) * for the moment you can try, if this script works I’ll add it to the plugin. * Thread Starter [slimschip](https://wordpress.org/support/users/slimschip/) * (@slimschip) * [7 years, 6 months ago](https://wordpress.org/support/topic/woocommerce-api-6/#post-10818988) * oh cool! * Thread Starter [slimschip](https://wordpress.org/support/users/slimschip/) * (@slimschip) * [7 years, 6 months ago](https://wordpress.org/support/topic/woocommerce-api-6/#post-10819108) * That did not work, as you scroll down on that page the is a reply from someone telling that and a suggested fix. but: * I think this is close to what is needed: * [https://developer.wordpress.org/rest-api/extending-the-rest-api/modifying-responses/](https://developer.wordpress.org/rest-api/extending-the-rest-api/modifying-responses/) * I guess the info on this page is for the correct integration with the REST API for getting and adding changing the value. * It is that I am clueless about WP/WC/php… otherwise I would have hacked the plug- in to see if I could make it work. * I’m happy to test though as I am familiar with the REST API of WC. * Martijn * Plugin Author [Emanuela Castorina](https://wordpress.org/support/users/kreamweb/) * (@kreamweb) * [7 years, 6 months ago](https://wordpress.org/support/topic/woocommerce-api-6/#post-10819345) * I made a test, I changed the file includes/class.product-gtin-wc.php with this code [https://gist.github.com/kreamweb/0452907d3ad0121a6535eedad2f7a85a](https://gist.github.com/kreamweb/0452907d3ad0121a6535eedad2f7a85a) * the ‘ean_code’ is present in the product detail: [http://nimb.ws/df9tRk](http://nimb.ws/df9tRk) * Let me know! * Thread Starter [slimschip](https://wordpress.org/support/users/slimschip/) * (@slimschip) * [7 years, 6 months ago](https://wordpress.org/support/topic/woocommerce-api-6/#post-10819519) * It works ! Thank you, I guess an update will just overwrite my hand made changes. * You are a live saver and deserve a big kiss! * Plugin Author [Emanuela Castorina](https://wordpress.org/support/users/kreamweb/) * (@kreamweb) * [7 years, 6 months ago](https://wordpress.org/support/topic/woocommerce-api-6/#post-10819713) * I’ll commit that file in the new release so you won’t lost these changes. This can be useful to other developer. * If you have two minutes could you leave a review for this plugin? [https://wordpress.org/support/plugin/product-gtin-ean-upc-isbn-for-woocommerce/reviews/](https://wordpress.org/support/plugin/product-gtin-ean-upc-isbn-for-woocommerce/reviews/) * Thank you! * [arnebel](https://wordpress.org/support/users/arnebel/) * (@arnebel) * [7 years, 3 months ago](https://wordpress.org/support/topic/woocommerce-api-6/#post-11170058) * Would it be possible to link it also with: [https://your-site.com/wc-api/v2/products](https://your-site.com/wc-api/v2/products)? Our cash register system works with this. * Thanks in advance! * [paul13234](https://wordpress.org/support/users/pavelreuk/) * (@pavelreuk) * [7 years, 2 months ago](https://wordpress.org/support/topic/woocommerce-api-6/#post-11260290) * Hi, * Do you know if the issue with using API to update the GTIN for the Product GTIN( EAN, UPC, ISBN) for WooCommerce plugin got resolved? * I’m trying to update the GTIN using API Post Calls and can’t seem to figure out why i can’t update using that method, please let me know if it was fixed and how to resolve it on my end? * Thanks. Viewing 14 replies - 1 through 14 (of 14 total) The topic ‘WooCommerce API’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/product-gtin-ean-upc-isbn-for-woocommerce. svg) * [Product GTIN (EAN, UPC, ISBN) for WooCommerce](https://wordpress.org/plugins/product-gtin-ean-upc-isbn-for-woocommerce/) * [Frequently Asked Questions](https://wordpress.org/plugins/product-gtin-ean-upc-isbn-for-woocommerce/#faq) * [Support Threads](https://wordpress.org/support/plugin/product-gtin-ean-upc-isbn-for-woocommerce/) * [Active Topics](https://wordpress.org/support/plugin/product-gtin-ean-upc-isbn-for-woocommerce/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/product-gtin-ean-upc-isbn-for-woocommerce/unresolved/) * [Reviews](https://wordpress.org/support/plugin/product-gtin-ean-upc-isbn-for-woocommerce/reviews/) * 14 replies * 4 participants * Last reply from: [paul13234](https://wordpress.org/support/users/pavelreuk/) * Last activity: [7 years, 2 months ago](https://wordpress.org/support/topic/woocommerce-api-6/#post-11260290) * Status: resolved