在symfony下拉列表中顯示名稱並保存ID

Question

我想將我的部門的'名稱'顯示爲我的用戶的下拉列表，當他們選擇一個時，將其'id'保存到數據庫中。我怎樣才能做到這一點？以下是我的代碼。 Currentlt顯示ID和保存ID。

public function buildForm(FormBuilderInterface $builder, array $options) 
{ 
    $builder 
     ->add('name') 
     ->add('adress') 
     ->add('city') 
     ->add('area') 
     ->add('departments', 'entity', array(
     'empty_value' => '', 
      'class' => 'YdyaHospitalBundle:Department', 
      'query_builder' => function($repository) { return $repository->createQueryBuilder('t')->orderBy('t.id', 'ASC'); }, 
      'property' => 'id', 
      'multiple' =>false, 
      'expanded' =>true, 
)) 
     ; 
    } 

更新

我的控制器動作：

/** 
* Creates a new Hospitals entity. 
* 
* @Route("/", name="hospitals_create") 
* @Method("POST") 
* @Template("YdyaHospitalBundle:Hospitals:new.html.twig") 
*/ 
public function createAction(Request $request) 
{ 
    $entity = new Hospitals(); 


    $form = $this->createForm(new HospitalsType(), $entity); 
    $form->bind($request); 

    if ($form->isValid()) { 
     $em = $this->getDoctrine()->getManager(); 


     $em->persist($entity); 
     $em->flush(); 

     return $this->redirect($this->generateUrl('hospitals_show', array('id' => $entity->getId()))); 
    } 

    return array(
     'entity' => $entity, 
     'form' => $form->createView(), 
    ); 
} 

/** 
* Displays a form to create a new Hospitals entity. 
* 
* @Route("/new", name="hospitals_new") 
* @Method("GET") 
* @Template() 
*/ 
public function newAction() 
{ 
    $entity = new Hospitals(); 

    $form = $this->createForm(new HospitalsType(), $entity); 

    return array(
     'entity' => $entity, 
     'form' => $form->createView(), 
    ); 
} 

Answer 1

您可以實現一個__toString()對你的實體，或指定的屬性與顯示：

->add('departments', 'entity', array(
    'empty_value' => '', 
    'class' => 'YdyaHospitalBundle:Department', 
    'query_builder' => function($repository) { return $repository->createQueryBuilder('t')->orderBy('t.id', 'ASC'); }, 
    // 'property' => 'id', --> Remove this 
    'multiple' => false, 
    'expanded' => true, 
    'property' => 'name' // Property used to display the entity 
)) 

在你控制器你仍然可以保存你的實體或你的實體的ID到數據庫。

查看文檔：http://symfony.com/doc/current/reference/forms/types/entity.html#property