cerebrate/templates/element/genericElements/IndexTable/Fields/role.php

<?php
    $roles = $this->Hash->extract($row, $field['data_path']);
    if (!empty($roles)) {
        if (!isset($roles[0])) {
            $roles = array($roles);
        }
        $count = count($roles);
        $i = 0;
        foreach ($roles as $role) {
            $i++;
            echo sprintf(
                '<a href="%sroles/view/%s">%s</a>',
                $baseurl,
                h($role['id']),
                h($role['name'])
            );
            if ($i < $count) {
                echo '<br />';
            }
        }
    }
?>