WooCommerce API

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.

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 6 years, 1 month ago by slimschip.

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

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

Put the script in the file functions.php of your theme.

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.

for the moment you can try, if this script works I’ll add it to the plugin.

oh cool!

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.www.ads-software.com/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

I made a test,
I changed the file includes/class.product-gtin-wc.php
with this code
https://gist.github.com/kreamweb/0452907d3ad0121a6535eedad2f7a85a

the ‘ean_code’ is present in the product detail:
https://nimb.ws/df9tRk

Let me know!

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!

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://www.ads-software.com/support/plugin/product-gtin-ean-upc-isbn-for-woocommerce/reviews/

Thank you!

Would it be possible to link it also with: https://your-site.com/wc-api/v2/products? Our cash register system works with this.

Thanks in advance!

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.