<form class="form-signin" method="POST" action="/authenticate">
        <h2 class="form-signin-heading">Please sign in</h2>
        <label for="inputEmail" class="sr-only">Username</label>
        <input type="text" id="inputEmail" name="username" class="form-control" placeholder="Username" required="" autofocus="">
        <label for="inputPassword" class="sr-only">Password</label>
        <input type="password" id="inputPassword" name="password" class="form-control" placeholder="Password" required="">
        <button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
     </form>

class LoginController extends Controller
{

function render()
{
    $template=new Template;
    $this->f3->set('page_head','Log In'); //from variable page_head from another template
    $this->f3->set('view','login/login.htm');

}

function beforeroute()
{
}

function authenticate()
{
    $username = $this->f3->get('POST.username');
    $password = $this->f3->get('POST.password');

    $user = new Login($this->db);
    $user->getByName($username);

    if($user->dry()) {
        echo 'No Matched Username';
    }



}
}

public function getByName($name)
{
    $this->load(array('username=?', $name));
}

$f3=require('lib/base.php');
$f3->config('config/config.ini');
$f3->route('GET|POST /login' ,  'LoginController->render');
$f3->route('POST /authenticate' , 'LoginController->authenticate');

$f3->run();