[wp-trac] [WordPress Trac] #64294: WooCommerce Blocks: Wrong domain in wp_resource_hints on multisite due to network-level cache (woocommerce_block_asset_resource_hints)

[WordPress Trac]

#64294: WooCommerce Blocks: Wrong domain in wp_resource_hints on multisite due to
network-level cache (woocommerce_block_asset_resource_hints)
--------------------------+------------------------------
 Reporter:  margelatu     |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  General       |     Version:  6.8.3
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
--------------------------+------------------------------

Comment (by maulikmakwana2008):

 Create this MU-plugin file:
 {{{#!php
 <?php
 /**
  * Plugin Name: Fix – WooCommerce Blocks Prefetch on Multisite
  * Description: Forces WooCommerce Blocks to use per-site transients
 instead of network-wide transients for resource hints.
  * Author: Core Tickets Patch
  * Version: 1.0
  */

 if ( ! defined( 'ABSPATH' ) ) exit;

 /**
  * WooCommerce Blocks incorrectly uses site transients (network-wide)
  * to cache resource hints. This causes the wrong domain to appear
  * on multisite installs with multiple domains.
  *
  * This patch reroutes the cache reads/writes to per-site transients.
  */

 add_filter( 'pre_site_transient_wc_blocks_resource_hints', function(
 $value ) {
     // Read from per-site transient instead
     return get_transient( 'wc_blocks_resource_hints' );
 });

 add_filter( 'pre_set_site_transient_wc_blocks_resource_hints', function(
 $value ) {
     // Save into per-site transient instead of network transient
     set_transient( 'wc_blocks_resource_hints', $value, DAY_IN_SECONDS );

     // Stop WP from saving it again as a network transient
     return null;
 });

 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/64294#comment:2>
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