aMember (site.php): Affiliate autocomplete without full access to affiliate module

site.php

<?php

Am_Di::getInstance()->router->addRoute('aff-autocomplete', new Am_Mvc_Router_Route('aff/admin/autocomplete', [
    'module' => 'default',
    'controller' => 'admin-aff-autocomplete',
    'action' => 'index',
]));

class AdminAffAutocompleteController extends Am_Mvc_Controller
{
    function checkAdminPermissions(Admin $admin)
    {
        return true;
    }

    function indexAction()
    {
        if (!$term = $this->getParam('term')) {
            return null;
        }

        $term = "%{$term}%";
        $exclude = $this->getInt('exclude');

        $q = new Am_Query($this->getDi()->userTable);
        $q->addWhere(
            '((t.login LIKE ?) OR (t.email LIKE ?) OR (t.name_f LIKE ?) OR (t.name_l LIKE ?))',
            $term, $term, $term, $term);
        if ($exclude) {
            $q->addWhere('user_id<>?', $exclude);
        }
        $q->addWhere('is_affiliate>?', 0);

        $qq = $q->query(0, 10);
        $ret = [];
        while ($r = $this->getDi()->db->fetchRow($qq)) {
            $ret[] = [
                'label' => sprintf('%s / "%s" <%s>', $r['login'], $r['name_f'] . ' ' . $r['name_l'], $r['email']),
                'value' => $r['login']
            ];
        }
        if ($q->getFoundRows() > 10)
            $ret[] = [
                'label' => sprintf("... %d more rows found ...", $q->getFoundRows() - 10),
                'value' => null,
            ];
        $this->ajaxResponse($ret);
    }
}