<?php

function sf_guard_user_admin_select_tag($name, $value, $params = array())
{

    $fc = stFunctionCache::getInstance('sfGuardUser');

    $options = $fc->cacheCall(function() {
        $group = sfGuardGroupPeer::retrieveByName('admin');
        
        $c = new Criteria();
        $c->addJoin(sfGuardUserPeer::ID, sfGuardUserGroupPeer::USER_ID, Criteria::LEFT_JOIN);
        $cc = $c->getNewCriterion(sfGuardUserPeer::IS_SUPER_ADMIN, true);
        $cc->addOr($c->getNewCriterion(sfGuardUserGroupPeer::GROUP_ID, $group->getId()));
        $c->add($cc);
        $c->addAscendingOrderByColumn(sfGuardUserPeer::USERNAME);

        $results = array();
        
        foreach (sfGuardUserPeer::doSelect($c) as $user)
        {
            if ($user->getIsSuperAdmin() || in_array('backend', $user->getAllPermissionNames()) && $user->hasModulePermission('stOrder.access') && $user->hasModulePermission('stOrder.modification'))
            {
                $results[$user->getId()] = $user->getUsername();
            }
        }

        return $results;
    }, array(), array('id' => 'sf_guard_user_admin_select_tag'));

    if (isset($params['include_custom']) && is_array($params['include_custom']))
    {
        $options = array_replace($params['include_custom'], $options);
        unset($params['include_custom']);
    }

    return select_tag($name, options_for_select($options, $value, $params));
}