[Solved] How to disable notification for certain user roles

The wpDiscuz User Notifications addon allows you to disable notifications for specific user roles using the wpdiscuz_un_add_notification hook.

Below is an example of how the hook can be used:

add_filter('wpdiscuz_un_add_notification', function($should_add, $data) {
      if (!$should_add || empty($data['recipient_id'])) {
          return $should_add;
      }

      $recipient     = get_userdata((int)$data['recipient_id']);

      if (!$recipient || empty($recipient->roles)) {
          return $should_add;
      }

      $blocked_roles = ['subscriber'];

      foreach ($blocked_roles as $role) {
          if (in_array($role, $recipient->roles, true)) {
              return false;
          }
      }

      return $should_add;
  }, 10, 2);

Hook parameters explanation:

• $should_add — determines whether the notification should be added to the database (true/false)

• $data — an array containing notification details, including:

  • recipient_id — ID of the user receiving the notification

  • recipient_email — email of the recipient

  • recipient_name — display name of the recipient

  • user_id — ID of the user who triggered the action

  • user_email — email of the triggering user

  • user_name — name of the triggering user

  • user_ip — IP of the triggering user

  • item_id — post/topic ID (wpDiscuz / wpForo / BuddyPress)

  • secondary_item_id — comment ID (wpDiscuz), post ID (wpForo), or 0 for follows/ratings

  • component_name — source plugin (wpdiscuz, wpforo, bp.friends)

  • component_action — action type

  • action_date — MySQL datetime of the action

  • action_timestamp — Unix timestamp of the action

  • is_new — 1/0 unread status

  • extras — additional data such as vote direction or rating value

For guidance on safely adding custom PHP code to WordPress, you can refer to this article:
How to add custom code in WordPress safely