How to sync inputs between different plugins in woocommerce ?

If you are using multiple plugins in WooCommerce that require input synchronization, such as custom product fields, checkout fields, or inventory management, you may need a way to keep them in sync. Here’s how you can do it effectively.

Method 1: Use a Common Data Source (Database or API)

Many WooCommerce plugins store their data in the WordPress database. You can ensure synchronization by:

Identifying where each plugin stores its data (in wp_postmeta, wp_options, or custom tables).
Using hooks to update data consistently across plugins.

Example: Syncing Custom Fields Between Plugins

Add this to your theme’s functions.php file:

add_action('save_post_product', 'sync_custom_plugin_fields', 10, 3);
function sync_custom_plugin_fields($post_id, $post, $update) {
    if (!$update) return;
    
    $custom_value = get_post_meta($post_id, '_custom_plugin_field', true);
    
    if ($custom_value) {
        update_post_meta($post_id, '_another_plugin_field', $custom_value);
    }
}

This ensures that when one plugin updates a custom field, another plugin receives the same value.

Method 2: Use WooCommerce Hooks and Filters

WooCommerce provides various hooks that can be used to sync data dynamically. For example:

woocommerce_after_checkout_form – Modify checkout fields dynamically.
woocommerce_update_product – Sync product details across plugins.

Example: Syncing Checkout Fields Between Plugins

add_filter('woocommerce_checkout_fields', 'sync_checkout_fields');
function sync_checkout_fields($fields) {
    $fields['billing']['billing_phone']['default'] = get_user_meta(get_current_user_id(), 'custom_plugin_phone', true);
    return $fields;
}

This code pulls data from another plugin and applies it to WooCommerce checkout fields.

Method 3: Use a Middleware Plugin for Data Synchronization

If plugins don’t naturally communicate, you can use middleware solutions like:

WP Fusion – Syncs data between WooCommerce and CRM/marketing plugins.
Zapier – Automates actions between different plugins via webhooks.

Method 4: Use Custom API Endpoints for Communication

If plugins provide REST API support, you can sync data by sending updates between them.

Example: Syncing Data via API Call

wp_remote_post('https://yourwebsite.com/wp-json/custom-plugin/update', [
    'body' => json_encode(['product_id' => $product_id, 'new_value' => $custom_value]),
    'headers' => ['Content-Type' => 'application/json']
]);

This ensures that when a change occurs in one plugin, another receives the updated data via API.