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FOX - Currency Switcher for WooCommerce

WooCommerce Product Add-Ons (by WooCommerce)

Plugin URL: https://woocommerce.com/products/product-add-ons/
  • Into file wp-content\plugins\woocommerce-product-addons\includes\class-wc-product-addons-cart.php add next code: 
    if ($addon['price'] AND class_exists('WOOCS')) {
    global $WOOCS;
    $currrent = $WOOCS->current_currency;
    if ($currrent != $WOOCS->default_currency AND $WOOCS->is_multiple_allowed) {
        $currencies = $WOOCS->get_currencies();
        $rate = $currencies[$currrent]['rate'];
        $addon['price'] = $addon['price'] * $rate;
    }
}
  • Also in the same file add code: 
    if (class_exists('WOOCS')) {
    global $WOOCS;
    $currrent = $WOOCS->current_currency;
    if ($currrent != $WOOCS->default_currency AND $WOOCS->is_multiple_allowed) {
        $currencies = $WOOCS->get_currencies();
        $rate = $currencies[$currrent]['rate'];
        $addon_price = $addon_price * $rate;
    }
}
  • In file wp-content\plugins\woocommerce-product-addons\includes\class-wc-product-addons-display.php add next code: 
    $suffix = ''; //woocs fix
$woocs_is_multiple = 0;
if (class_exists('WOOCS')) {
    global $WOOCS;
    $woocs_is_multiple = $WOOCS->is_multiple_allowed;
}
  • On the same file add also: 
    'woocs_is_multiple' => $woocs_is_multiple
  • In file wp-content\plugins\woocommerce-product-addons\assets\js\frontend/addons.js add next code: 
    var woocs_exists = true;
try {
    if (woocs_current_currency)
        woocs_exists = true;
} catch (e) {
    woocs_exists = false;
}
if (woocs_exists) {
    if (woocs_current_currency != undefined && woocs_current_currency['rate'] != undefined && woocommerce_addons_params.woocs_is_multiple == 0) {
        self.base_price = self.base_price * woocs_current_currency['rate'];
    }
}
  • Also on the same file add code: 
    var woocs_exists = true;
try {
    if (woocs_current_currency)
        woocs_exists = true;
} catch (e) {
    woocs_exists = false;
}
if (woocs_exists) {
    if (woocs_current_currency != undefined && woocs_current_currency['rate'] != undefined && addon_cost != undefined) {
        addon_data.cost = addon_data.cost * woocs_current_currency['rate'];
        addon_data.cost_raw = addon_data.cost_raw * woocs_current_currency['rate'];
    }
}
  • and into file functions.php of the current WordPress theme add next code: 
    add_filter('woocommerce_product_addons_option_price', function ($price_html, $option, $i, $type) {
    if ($price_html AND class_exists('WOOCS')) {
        global $WOOCS;

        $option_price = !empty($option['price']) ? $option['price'] : '';
        $option_price_type = !empty($option['price_type']) ? $option['price_type'] : '';
        $price_prefix = 0 < $option_price ? '+' : '';
        $price_type = $option_price_type;
        $price_raw = apply_filters('woocommerce_product_addons_option_price_raw', $option_price, $option);
        $price_raw = $WOOCS->woocs_exchange_value($price_raw);
        $price_html = '(' . $price_prefix . wc_price(WC_Product_Addons_Helper::get_product_addon_price_for_display($price_raw)) . ')';
    }

    return $price_html;
}, 20, 4);
     
This edit is inside another plugin's file, so a plugin update will undo it. Write the change down, and re-apply it after every update of that plugin — or ask its authors to include the fix on their side, which is the only version that survives. If the change is inside FOX itself, tell us: a fix that has to be re-applied by hand is a bug on our side, not a solution.