By default, the WordPress REST API doesn’t pass along authentication data.

If your FacetWP template or customization code depends on the currently logged-in user, you will run into issues with your code not working after an AJAX refresh is triggered (which happens when using facets).

Examples would be code that depends on:

  • is_user_logged_in()
  • wp_get_current_user()
  • global $current_user and e.g. $current_user->roles

Fortunately, there’s an easy workaround: add the following code to your (child) theme’s functions.php:

How to use custom PHP code?

PHP code can be added to your (child) theme's functions.php file. Alternatively, you can use the Custom Hooks add-on, or a code snippets plugin. More info

/* Please note that caching may interfere with the NONCE, causing AJAX requests to fail. Please DISABLE CACHING for facet pages, or set the cache expiration to < 12 hours! */ add_action( 'wp_footer', function() { ?> <script> document.addEventListener('facetwp-loaded', function() { if (! FWP.loaded) { // initial pageload FWP.hooks.addFilter('facetwp/ajax_settings', function(settings) { settings.headers = { 'X-WP-Nonce': FWP_JSON.nonce }; return settings; }); } }); </script> <?php }, 100 );

See also