YITH WooCommerce Dynamic Pricing & Discounts Premium – Gifts Not Added and Currency Switch Fails on AJAX Requests

Overview of the Issue

When using YITH WooCommerce Dynamic Pricing & Discounts Premium with WPML and multi-currency enabled, AJAX actions may trigger incorrect behavior: gifts are not added to the cart in secondary currencies, and cart prices revert to the default currency.

Workaround

Please, make sure of having a full site backup of your site before proceeding.

• Add the following code to your theme’s functions.php file.

  // WPML Workaround for compsupp-8147 
  add_filter( 'wcml_load_multi_currency_in_ajax', 'add_action_to_multi_currency_ajax', 10, 1 );
  
  function add_action_to_multi_currency_ajax( $ajax_actions ) {
      $ywdpd_actions = array(
          'ywdpd_add_gift_to_cart',
          'ywdpd_add_bogo_to_cart',
          'ywdpd_add_special_to_cart',
          'ywdpd_add_last_deals',
          'ywdpd_check_variable',
          'ywdpd_valid_rule_in_checkout',
          'ywdpd_update_cart_after_payment_method',
      );
  
      return array_values( array_unique( array_merge( (array) $ajax_actions, $ywdpd_actions ) ) );
  }

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