Symfony3创建类型文件中没有实体的表单

我在控制器中创建了一个这样的表单：

$data = array ();
$formBuilder = $this->createFormBuilder ( $data );
$formBuilder->add( 'Field1', NumberType::class, array(
                    'constraints' => array(
                            new NotBlank(),
                    ),
            ) )
            ->add ( 'Field2', NumberType::class, array(
                    'constraints' => array(
                            new NotBlank(),
                    )
...);
$form = $formBuilder->getForm ();

我试图将创建的表单放入Type文件中。我是这样做的，但是没有创建表单，并且无法在视图中显示表单字段。我不明白为什么。

#in ControlController
$data = array ();
$formBuilder= $this->createFormBuilder(ControlType::class, $data);
$form = $formBuilder->getForm ();

#in ControlType
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add( 'Field1', NumberType::class, array(
                    'constraints' => array(
                            new NotBlank(),
                    ),
            ) )
            ->add ( 'Field2', NumberType::class, array(
                    'constraints' => array(
                            new NotBlank(),
                    )....;
}

编辑1：我已经尝试了所有您告诉我的事情，但是仍然无法正常工作。我的代码现在看起来像这样：

#in ControlController
$data = ['Field1' => null, 'Field2' => null];
$formBuilder= $this->createFormBuilder(ControlType::class, $data);
$form = $formBuilder->getForm ();
return $this->render ( 'MeTestBundle:Control:index.html.twig', array (
            'form' => $form->createView () 
    ) );

#in ControlType
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add( 'Field1', NumberType::class, array(
                            'mapped' => false,
    ) )
    ->add ( 'Field2', NumberType::class, array(
            'constraints' => array(
                    new NotBlank(),
            ),
            'mapped' => false
    ))
    ->add ( 'save', SubmitType::class, array (
            'label' => 'Control'
    ));
}

public function configureOptions(OptionsResolver $resolver)
{
    $resolver->setDefaults(array(
            'data_class' => Control::class,
    ));
}

但是现在我遇到的错误是选项“ Field1”，“ Field2”不存在。定义的选项为：“操作”，“ allow_extra_fields”，“ attr”，“ auto_initialize”，“ block_name”，“ by_reference”，“ compound”，“ constraints”，“ csrf_field_name”，“ csrf_message”，“ csrf_protection”，“ csrf_token_id ”，“ csrf_token_manager”，“数据”，“ data_class”，“已禁用”，“ empty_data”，“ error_bubbling”，“ error_mapping”，“ extra_fields_message”，“ inherit_data”，“ invalid_message”，“ invalid_message_parameters”，“ “ label_attr”，“ label_format”，“映射”，“方法”，“