$form = $this->createForm(new OrganizationType(), $entity, array(
'action' => $this->generateUrl('_control_organization_create'),
'method' => 'POST',
));
$form->add('submit', 'submit', array('label' => 'Create'));
return $form;
定义了动作和方法。如何得到这个?在模板引擎树枝中进入自定义渲染?