code: public function newAction()
      {
          $entity = new CustomFieldsGroup();
          $form   = $this->createCreateForm($entity);
  
          return $this->render('ChillCustomFieldsBundle:CustomFieldsGroup:new.html.twig', array(
              'entity' => $entity,
              'form'   => $form->createView(),
          ));
      }
docs: Displays a form to create a new CustomFieldsGroup entity.