UserUid.php

<?php

namespace Drupal\tracker\Plugin\views\filter;

use Drupal\user\Plugin\views\filter\Name;

/**
 * UID filter to check for nodes that a user posted or commented on.
 *
 * @ingroup views_filter_handlers
 *
 * @ViewsFilter("tracker_user_uid")
 */
class UserUid extends Name {
    
    /**
     * {@inheritdoc}
     */
    public function query() {
        // Because this handler thinks it's an argument for a field on the {node}
        // table, we need to make sure {tracker_user} is JOINed and use its alias
        // for the WHERE clause.
        $tracker_user_alias = $this->query
            ->ensureTable('tracker_user');
        // Cast scalars to array so we can consistently use an IN condition.
        $this->query
            ->addWhere(0, "{$tracker_user_alias}.uid", (array) $this->value, 'IN');
    }

}