From 8ed7bf5c9b43f7207104ccbca57ccadef705b761 Mon Sep 17 00:00:00 2001
From: Faisal Ahammad <faisalahammad24@gmail.com>
Date: Mon, 16 Feb 2026 21:39:11 +0600
Subject: [PATCH] fix(wpml): correct product permalinks for WPML translated
 products

Add WPML compatibility for ecommerce product permalink generation.
When products are synced to Mailchimp, the product URLs now include
the correct WPML language context, ensuring translated products
link to the correct language version.

- Add wpml-ecommerce.php with permalink correction functions
- Hook into mc4wp_ecommerce_product_data filter for products
- Hook into mc4wp_ecommerce_product_variants_data for variants
- Only applies when WPML (ICL_SITEPRESS_VERSION) is active

Fixes #775
---
 autoload.php                             |  1 +
 includes/default-filters.php             |  4 ++
 includes/integrations/wpml-ecommerce.php | 73 ++++++++++++++++++++++++
 3 files changed, 78 insertions(+)
 create mode 100644 includes/integrations/wpml-ecommerce.php

diff --git a/autoload.php b/autoload.php
index e2751c05..6cc73eb8 100755
--- a/autoload.php
+++ b/autoload.php
@@ -5,6 +5,7 @@
 require __DIR__ . '/includes/forms/functions.php';
 require __DIR__ . '/includes/forms/admin-functions.php';
 require __DIR__ . '/includes/integrations/functions.php';
+require __DIR__ . '/includes/integrations/wpml-ecommerce.php';
 
 spl_autoload_register(function ($class) {
     static $classmap = [
diff --git a/includes/default-filters.php b/includes/default-filters.php
index 860dec02..44663ba7 100755
--- a/includes/default-filters.php
+++ b/includes/default-filters.php
@@ -15,3 +15,7 @@
 mc4wp_apply_deprecated_filters('mc4wp_merge_vars', 'mc4wp_form_data');
 mc4wp_apply_deprecated_filters('mc4wp_form_merge_vars', 'mc4wp_form_data');
 mc4wp_apply_deprecated_filters('mc4wp_integration_merge_vars', 'mc4wp_integration_data');
+
+// WPML: fix product permalinks in ecommerce data synced to Mailchimp
+add_filter('mc4wp_ecommerce_product_data', 'mc4wp_wpml_ecommerce_product_permalink');
+add_filter('mc4wp_ecommerce_product_variants_data', 'mc4wp_wpml_ecommerce_product_variants_permalink');
diff --git a/includes/integrations/wpml-ecommerce.php b/includes/integrations/wpml-ecommerce.php
new file mode 100644
index 00000000..c2c9c63c
--- /dev/null
+++ b/includes/integrations/wpml-ecommerce.php
@@ -0,0 +1,73 @@
+<?php
+
+/**
+ * WPML compatibility for Mailchimp ecommerce product permalinks.
+ *
+ * When WooCommerce products are synced to Mailchimp via the ecommerce module,
+ * the product URLs may not include the correct WPML language context, causing
+ * translated products to link to the default language version.
+ *
+ * These functions hook into the ecommerce product data filters to ensure
+ * product URLs are generated with the correct WPML language.
+ *
+ * @since 4.11.2
+ * @see https://github.com/ibericode/mailchimp-for-wordpress/issues/775
+ */
+
+defined('ABSPATH') or exit;
+
+/**
+ * Fixes the product permalink for WPML translated products.
+ *
+ * Hooks into the ecommerce product data filter to replace the product URL
+ * with the correct WPML-translated permalink.
+ *
+ * @since 4.11.2
+ *
+ * @param array $data Product data array containing 'id' and 'url' keys.
+ * @return array Modified product data with corrected URL.
+ */
+function mc4wp_wpml_ecommerce_product_permalink($data)
+{
+    if (!defined('ICL_SITEPRESS_VERSION')) {
+        return $data;
+    }
+
+    $language = apply_filters('wpml_element_language_code', null, [
+        'element_id'   => $data['id'],
+        'element_type' => 'product',
+    ]);
+
+    $data['url'] = apply_filters('wpml_permalink', $data['url'], $language);
+
+    return $data;
+}
+
+/**
+ * Fixes the product variant permalinks for WPML translated products.
+ *
+ * Hooks into the ecommerce product variants data filter to replace each
+ * variant URL with the correct WPML-translated permalink.
+ *
+ * @since 4.11.2
+ *
+ * @param array $variants Array of variant data arrays, each containing 'id' and 'url' keys.
+ * @return array Modified variants data with corrected URLs.
+ */
+function mc4wp_wpml_ecommerce_product_variants_permalink($variants)
+{
+    if (!defined('ICL_SITEPRESS_VERSION')) {
+        return $variants;
+    }
+
+    foreach ($variants as $key => $variant) {
+        $language = apply_filters('wpml_element_language_code', null, [
+            'element_id'   => $variant['id'],
+            'element_type' => 'product',
+        ]);
+
+        $variants[$key]['url'] = apply_filters('wpml_permalink', $variant['url'], $language);
+    }
+
+    return $variants;
+}