symfony form

gistfile1.php

class User extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('name', 'text')
            ->add('email', 'email')
            ->add('password', 'password');
    }

    public function getName()
    {
        return 'user';
    }
}

// ...

user = new Entity\User();
$form = $app['form.factory']
    ->createBuilder(new UserType(), $user)
    ->getForm();

$form->handleRequest($req);

if ($form->isValid()) {
    $app['orm.em']->persist($user);
    $app['orm.em']->flush();
}