DefaultController.php

<?php

namespace WhiteOctober\FormBuilderBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use WhiteOctober\FormBuilderBundle\Document\FormBuilder;
use WhiteOctober\FormBuilderBundle\Document\Element;
use WhiteOctober\FormBuilderBundle\Form\FormBuilderForm;

use Symfony\Component\Form\Form;
use Symfony\Component\Form\TextField;
use Symfony\Component\Form\IntegerField;
class DefaultController extends Controller
{
    public function indexAction()
    {
		$formBuilder = new FormBuilder();

		$form = FormBuilderForm::create($this->get('form.context'));

		$form->bind($this->get('request'), $formBuilder);

		// If the form has been submitted and validates...
		if ($form->isValid()) {
			exit("hello");
		}

        return $this->render('FormBuilderBundle:Default:index.html.twig',  array(
        'form' => $form
    	));
    }
}