Modify product the moment it's created by WooCommerce Rest API

Question

I have an ERP system creating products in WooCommerce and I need them to be private instead of published.

I tried the hook woocommerce_rest_insert_product but it's not doing anything. I've tried adding it on a plugin and on a mu-plugin using plugins_loaded action.

I found the hook inside the class WC_REST_Products_V1_Controller, in theory it should work...

/**
 * Fires after a single item is created or updated via the REST API.
 *
 * @param WP_Post         $post      Post data.
 * @param WP_REST_Request $request   Request object.
 * @param boolean         $creating  True when creating item, false when updating.
 */
do_action( 'woocommerce_rest_insert_product', $post, $request, false );

Answer 1

I know this is a late answer but it could make sense for others getting here to read this.

I am pretty sure you are using the latest v3 of the API.

The problem is that the action you mentioned can be found in WC_REST_Products_V1_Controller which has the endpoint namespace set to:

protected $namespace = 'wc/v1';

This means it is not usable on the v3.

If you go through the Woocommerce REST controllers in Version 3 you will reach this file:

includes/rest-api/Controllers/Version3/class-wc-rest-products-controller.php

which has the namespace set to wc/v3;

Here, the class WC_REST_Products_Controller extends WC_REST_Products_V2_Controller.

In the WC_REST_Products_V2_Controller there are the create_item and update_item methods. Both of these methods look very similar to what was in v1 but, the action name you are looking for is changed to:

/**
* Fires after a single object is created or updated via the REST API.
*
* @param WC_Data         $object    Inserted object.
* @param WP_REST_Request $request   Request object.
* @param boolean         $creating  True when creating object, false when updating.
*/
do_action( "woocommerce_rest_insert_{$this->post_type}_object", $object, $request, true );

So, your code should look something like:

add_action( 
    "woocommerce_rest_insert_product_object", 
    function($product, $request, $creating ){
        // do something here
    }, 10, 3
);

The big difference between woocommerce_new_product and woocommerce_rest_insert_{$this->post_type}_object is that woocommerce_new_product is triggered on all create actions, not only on the REST create.