/**
* User login submit
*
* @param Request $request
* @param Response $response
* @return Response
*/
public function loginSubmit(Request $request = null, Response $response = null)
{
$app = $this->app($request);
$user = new UserSession($app);
$username = $app->http->post('username');
$password = $app->http->post('password');
$result = $user->login($username, $password);
$url = $result ? '/' : 'login';
return $app->http->redirectBase($url);
}
