A simple plugin to disable certain core actions from being carried out on a subscription with the WooCommerce Subscriptions plugin. For example, prevent a subscription from being changed to a new payment method.

wcs-disallow-subscription-actions.php

<?php
/**
 * Plugin Name: WooCommerce Subscriptions Disallow Subscription Actions
 * Plugin URI: https://docs.woothemes.com/document/subscriptions/faq/#section-63
 * Description: Prevent core actions from being carried out on a subscription with the WooCommerce Subscriptions plugin.
 * Author: Brent Shepherd
 * Author URI:
 * Version: 2.0
 */

/**
 * Do not allow any subscriptions to be changed to a new payment method.
 */
add_filter( 'woocommerce_can_subscription_be_updated_to_new-payment-method', '__return_false', 100 );

/**
 * Do not allow a customer to resubscribe to an expired or cancelled subscription.
 */
//add_filter( 'wcs_can_user_resubscribe_to_subscription', '__return_false', 100 );

/**
 * Do not allow any subscriptions to switched to a different subscription, regardless of settings (more: http://docs.woothemes.com/document/subscriptions/switching-guide/).
 */
//add_filter( 'woocommerce_subscriptions_can_item_be_switched_by_user', '__return_false', 100 );
// OR
//add_filter( 'woocommerce_subscriptions_can_item_be_switched', '__return_false', 100 );


/**
 * Subscriptions Status Changes
 **/

/**
 * Do not allow any subscriptions to be activated or reactivated (not a good idea).
 */
//add_filter( 'woocommerce_can_subscription_be_updated_to_active', '__return_false', 100 );

/**
 * Do not allow any subscription to be cancelled, either by the store manager or customer (not a good idea).
 */
//add_filter( 'woocommerce_can_subscription_be_updated_to_cancelled', '__return_false', 100 );

/**
 * Do not allow any subscription to be suspended, either by the store manager or customer (not a good idea).
 */
//add_filter( 'woocommerce_can_subscription_be_updated_to_on-hold', '__return_false', 100 );

Is it possible to adapt this to disallow variable product subscriptions to be switched to a specific different variation?

Or to disallow variable product subscriptions downgrades only?

Thanks

Pour celles et ceux qui n’auraient pas compris, ce code se place directement dans le fichier "wcs-functions.php" à la racine du fichier de l'extension de Woocommerce Subscriptions.