make wc-json api compatible

[rafaelcmrj]

I'd like to make the v2/orders/:id endpoint work with the sequential order number. Now it only accepts the actual order ID, is there a way to make it recognize the order_number as well?

[amirhmoradi]

@rafaelcmrj here is the code snippet i developed to add the order_number filter to Woocommerce API (it is made and tested for latest woocommerce api v3+)
I created a PR to add this feature to the plugin natively, but in the meantime you can use the snippet:

/**
 * Add capability to get orders by 'order_number' in WC API
 * Depends on WooCommerce Sequential Order Numbers (Free or Pro)
 * Credits: Amir Moradi (https://linkedin.com/in/amirhmoradi) for Avnox.com
 * 
 */
function ax_wc_add_custom_order_number_query_arg( $args ) {
    $args['order_number'] = array(
        'description'       => 'Filter by custom order number',
        'type'              => 'string',
        'validate_callback' => 'is_string',
    );
    return $args;
}
add_filter( 'woocommerce_rest_orders_collection_params', 'ax_wc_add_custom_order_number_query_arg', 10, 1 );

function ax_wc_filter_orders_by_custom_order_number_with_plugin( $args, $request ) {
    if ( ! empty( $request['order_number'] ) ) {
		// Check if the Sequential Order Numbers plugin is active and the method exists
		$wc_sec_ordnum_function = function_exists('wc_seq_order_number_pro') ? 'wc_seq_order_number_pro' : (function_exists('wc_sequential_order_numbers') ? 'wc_sequential_order_numbers' : null);
        if ( $wc_sec_ordnum_function ) {
			$order_id = $wc_sec_ordnum_function()->find_order_by_order_number( $request['order_number'] );
            // Additional check to ensure the order number matches exactly
            if ( $order_id ) {
                $order = wc_get_order( $order_id );
                $actual_order_number = method_exists($order, 'get_order_number') ? $order->get_order_number() : '';

                if ( $actual_order_number === $request['order_number'] ) {
                    $args['post__in'] = array( $order_id );
                } else {
					// Set an impossible condition, such as a post status that doesn't exist
					$args['post_status'] = 'no-status';
					$args['post__in'] = array( 0 );
                }
            } else {
                // If no matching order is found
                // Set an impossible condition, such as a post status that doesn't exist
				$args['post_status'] = 'no-status';
				$args['post__in'] = array( 0 );
            }
        } else {
            // Optionally, handle the case where the plugin is not active or the method doesn't exist
            // This could be a simple log, an error message, or a fallback behavior
            // error_log( 'PLUGIN NOT FOUND' );
        }
    }

    return $args;
}
add_filter( 'woocommerce_rest_orders_prepare_object_query', 'ax_wc_filter_orders_by_custom_order_number_with_plugin', 100, 2 );