Disable Polylang Variation Sync

gistfile1.txt

<?php
/**
Plugin name: Disable Polylang Variation Sync
Plugin URI: https://designamite.co.uk
Version: 0.2
Author: Steven Brown
Author uri: https://designamite.co.uk
Description: Removes actions that sync product variation data
WC requires at least: 3.0
WC tested up to: 3.7
*/

/**
 * Disable variation sync
 */

add_action( 'pll_init', function() {

  // Disable variaton sync
  remove_action( 'add_meta_boxes', array( PLLWC()->admin_products, 'add_meta_boxes' ), 5, 2 );
  remove_action( 'woocommerce_update_product', array( PLLWC()->admin_products, 'save_product' ) );
  remove_action( 'woocommerce_new_product_variation', array( PLLWC()->admin_products, 'save_variation' ) );
  remove_action( 'woocommerce_update_product_variation', array( PLLWC()->admin_products, 'save_variation' ) );
  remove_action( 'pll_created_sync_post', array( PLLWC()->admin_products, 'copy_variations' ) );

  // Removes global attribute sync / product type
  remove_filter( 'pll_copy_taxonomies', array( PLLWC()->post_types, 'copy_taxonomies' ) );

}, 999 );


// Product taxonomy filter, disable attributes from copying over and keep what we need
add_filter( 'pll_copy_taxonomies', 'rp_pll_copy_taxonomies', 10, 2);

function rp_pll_copy_taxonomies($taxonomies) {

  if (in_array('product_cat', $taxonomies)) {

    $taxonomies = array('product_cat', 'product_tag');

  }

  return $taxonomies;

}

add_filter('pllwc_copy_post_metas', 'pll_mc_remove_metadata_sync', 10, 5);

/**
 * Polylang Syncing
 * Don't sync price / stock-related information in Polylang for WC
 */

function pll_mc_remove_metadata_sync($to_copy, $sync, $from, $to, $lang) {

  $remove_fields = array(
    '_backorders',
    '_featured',
    '_manage_stock',
    '_max_price_variation_id',
    '_max_regular_price_variation_id',
    '_max_sale_price_variation_id',
    '_max_variation_price',
    '_max_variation_regular_price',
    '_max_variation_sale_price',
    '_min_price_variation_id',
    '_min_regular_price_variation_id',
    '_min_sale_price_variation_id',
    '_min_variation_price',
    '_min_variation_regular_price',
    '_min_variation_sale_price',
    '_regular_price',
    '_sale_price',
    '_sale_price_dates_from',
    '_sale_price_dates_to',
    '_sold_individually',
    '_tax_class',
    '_tax_status',
    '_price',
    '_stock',
    '_stock_status',
    '_tax_class',
    '_tax_status',
    '_visibility',
    'total_sales',
    '_default_attributes',
    '_product_attributes'
  );

  foreach($remove_fields as $key_num => $key_to_remove) {
    if(($key = array_search($key_to_remove, $to_copy)) !== false) {
      unset($to_copy[$key]);
    }
  }

  return $to_copy;
  
}