Symfony isValid() always returns true - php

Question

As it stands isValid() returns true on form submission regardless of whether the fields have been filled out or not. The objective is to get isValid() method to actually check the data. Any help would be much appreciated.
Form Entity:
namespace Bookboon\Premium\AppBundle\Entity;
class Form {
protected $email;
protected $id,
$type,
$voucher,
$subscription,
$affiliate;
public function getEmail(){
return $this->email;
}
public function setEmail($email){
$this->email = $email;
}
// The rest of the getters & setters have been omitted for ease of reading, but they look very similar to the above.
}
services.yml:
services:
form.builder:
class: Symfony\Component\Form\FormBuilder
arguments: ['SignUpForm', 'Bookboon\Premium\AppBundle\Entity\Form', #event_dispatcher, #form.factory]
premium.form.entity:
class: Bookboon\Premium\AppBundle\Entity\Form
arguments: [ ]
premium.form.sign_up:
class: Bookboon\Premium\AppBundle\Form\SignUpFormType
tags:
- { name: form.type, alias: SignUpForm }
premium.controller.signup:
class: Bookboon\Premium\AppBundle\Controller\SignUpController
arguments: [#templating, #form.builder, #premium.form.sign_up, #form.factory, #premium.form.entity ]
validation.yml:
Bookboon\Premium\AppBundle\Entity\Form:
properties:
email:
- NotBlank: ~
- NotNull: ~
SignUpController.php:
namespace Bookboon\Premium\AppBundle\Controller;
use Bookboon\Premium\AppBundle\Entity\Form;
use Bookboon\Premium\AppBundle\Form\SignUpFormType;
use Bookboon\Premium\AppBundle\Form\SignUpDetailsForm;
use Symfony\Bundle\FrameworkBundle\Templating\EngineInterface;
use Symfony\Component\Form\FormBuilder;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Form\FormFactory;
class SignUpController implements DetectionController
{
private $_templating;
private $_formBuilder;
private $_form;
private $_formFactory;
private $_formData;
public function __construct(EngineInterface $templating, FormBuilder $formBuilder, SignUpFormType $signUpFormType, FormFactory $formFactory, Form $formData)
{
$this->_templating = $templating;
$this->_formBuilder = $formBuilder;
$this->_form = $signUpFormType;
$this->_formFactory = $formFactory;
$this->_formData = $formData;
}
public function signUpDetailsAction()
{
return $this->renderForm('SignUpDetailsForm', new SignUpDetailsForm(), 'details');
}
public function signUpAction(Request $request)
{
$form = $this->createForm($this->_form, $this->_formData);
$form->handleRequest($request);
if($request->getMethod() == 'POST'){
if($form->isValid()){
dump('Form Is Valid!');
}
return $this->renderForm($form->createView(), 'signup');
}
return $this->renderForm($form->createView(), 'signup');
}
public function renderForm($form, $type)
{
return $this->_templating->renderResponse( 'PremiumBundle:Connect:'.$type.'.html.twig', array('form'=>$form));
}
public function createForm($type, $data = null, array $options = array())
{
return $this->_formFactory->create($type, $data, $options);
}
}
SignUpFormType:
namespace Bookboon\Premium\AppBundle\Form;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Bookboon\Premium\AppBundle\Entity;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
class SignUpFormType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('email', 'text', array('label'=>' ',
'attr' => array('placeholder'=>'Your email', 'class'=>'email')))
->add('save', 'submit', array( 'label'=>'Access Premium',
'attr'=>array('class'=>'btn btnProceed'),
'validation_groups' => true))
->add('facebook', 'submit', array( 'validation_groups' => false,
'attr' =>array('class'=>'btn btnFacebook cancel')))
->add('linkedin', 'submit', array( 'validation_groups' => false,
'attr' =>array('class'=>'btn btnLinkedIn cancel')))
->add('id', 'hidden')
->add('type', 'hidden')
->add('voucher', 'hidden');
}
public function getName()
{
return 'SignUpForm';
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'Bookboon\Premium\AppBundle\Entity\Form',
));
}
}