Өөрөөрөө төрсний дараах бүс 3in1 (Өөрөөрөө) 2018

<?php
// this would go in your theme functions.php file
/**
* Custom product meta field to use as barcode
*
* By default WooCommerce POS will use the SKU field- '_sku'
* You can change the meta key using the following WordPress filter
*
* Below are meta fields from popular barcode plugins
* '_ywbc_barcode_value' – YITH WooCommerce Barcodes Premium
*/
function my_custom_pos_barcode_meta_key(){
return '_barcode'; // change for your custom meta key
}
add_filter('woocommerce_pos_barcode_meta_key', 'my_custom_pos_barcode_meta_key' );