zend framework 2

<?php
/*
\vedor\module\Application\Controller\LoginController.php
*/
 namespace Application\Controller;
 use Zend\Mvc\Controller\AbstractActionController;
 use Zend\View\Model\ViewModel;
 use Application\Model\SuperuserTable;


 class LoginController extends AbstractActionController
 {
    protected $superuserTable;

     public function indexAction()
     {
        print_r($this->getServiceLocator()->get('Application\Model\SuperuserTable'));
        return new ViewModel([
            'superusers' => $this->superuserTable->fetchAll()
        ]);
     }

     public function getSuperuserTable()
     {
        if(!$this->superuserTable) {
            $sm = $this->getServiceLocator();
            $this->superuserTable = $sm->get('Application\Model\SuperuserTable');
        }

        return $this->superuserTable;
     }
 }
?>


<?php
/*
\vendor\module\Application\src\Application\Model\Superuser.php
*/
namespace Application\Model;

class Superuser
{
    public $id;
    public $name;
    public $department_id;
    public $image_profile;
    public $email;
    public $username;
    public $password;

    public function exchangeArray(array $data)
    {
        $this->id= !empty($data['id']) ? $data['id'] : null;
        $this->name= !empty($data['name']) ? $data['name'] : null;
        $this->department_id= !empty($data['department_id']) ? $data['department_id'] : null;
        $this->image_profile= !empty($data['image_profile']) ? $data['image_profile'] : null;
        $this->email= !empty($data['email']) ? $data['email'] : null;
        $this->username= !empty($data['username']) ? $data['username'] : null;
        $this->password= !empty($data['password']) ? $data['password'] : null;
    }
}
?>

<?php
/*
\vendor\module\Application\src\Application\Model\SuperuserTable.php
*/
namespace Application\Model;

use RuntimeException;
use Zend\Db\TableGateway\TableGateway;

class SuperuserTable
{
    private $tableGateway;

    public function __construct(TableGatewayInterface $tableGateway)
    {
        $this->tableGateway = $tableGateway;
    }

    public function fetchAll()
    {
        return $this->tableGateway->select();
    }

    public function getSuperuser($id)
    {
        $id = (int)$id;
        $rowset = $this->tableGateway->select(['id', $id]);
        $row = $rowset->current();
        if(! $row) {
            throw new RuntimeException(sprintf(
                'Could not find row with identifier $id',
                $id
            ));
        }

        return $row;
    }

    public function saveSuperuser(Superuser $superuser)
    {
        $data = [
            'name'      => $superuser->name,
            'department_id' => $superuser->department_id,
            'image_profile' => $superuser->image_profile,
            'email'     => $superuser->email,
            'username'      => $superuser->username,
            'password'      => $superuser->password,
        ];

        $id = (int) $superuser->id;

        if($id == 0) {
            $this->tableGateway->insert($data);
            return;
        }

        if(! $this->getSuperuser($id)) {
            throw new RuntimeException(sprintf(
                'Cannot update album with identifier %d; does not exist',
                $id
            ));
        }

        $this->tableGateway->update($data, ['id'] => $id);
    }

    public function deleteSuperuser($id)
    {
        $this->tableGateway->delete(['id', (int) $id]);
    }
}
?>

<?php
/*
*\vendor\module\Application\Module.php
*/

namespace Application;

use Zend\Mvc\ModuleRouteListener;
use Zend\Mvc\MvcEvent;
use Application\Model\Superuser;
use Appication\Model\SuperuserTable;
use Zend\Db\ResultSet\ResultSet;
use Zend\Db\TableGateway\TableGateway;

class Module
{
    public function onBootstrap(MvcEvent $e)
    {
        $eventManager        = $e->getApplication()->getEventManager();
        $moduleRouteListener = new ModuleRouteListener();
        $moduleRouteListener->attach($eventManager);
    }

    public function getConfig()
    {
        return include __DIR__ . '/config/module.config.php';
    }

    public function getAutoloaderConfig()
    {
        return array(
            'Zend\Loader\StandardAutoloader' => array(
                'namespaces' => array(
                    __NAMESPACE__ => __DIR__ . '/src/' . __NAMESPACE__,
                ),
            ),
        );
    }

    public function getServiceConfig()
    {
        return [
            'factories' => [
                'Application\Model\SuperuserTable' => function($sm) {
                        $tableGateway = $sm->get('SuperuserTableGateway');
                        $table = new SuperuserTable($tableGateway);
                        return $table;
                },
                'AlbumTableGateway' => function ($sm) {
                    $dbAdapter = $sm->get('Zend\Db\Adapter\Adapter');
                    $resultSetPrototype = new ResultSet();
                    $resultSetPrototype->setArrayObectPrototype(new Superuser());
                    return new TableGateway('superuser', $dbAdapter, null, $resultSetPrototype);
                }
            ],
        ];
    }
}
?>