Symfony2 - ReferencedColumnName id爲null

Question

但是，當我嘗試將此持久化到數據庫時，我得到了關於form collections的食譜文章，但遇到約束違規錯誤，並且引用列名稱id爲null。

SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'client_id' cannot be null 

我相信這些實體安裝正確且相關性正確，有什麼我需要添加到我的表單中，我錯過了嗎？

客戶

/** 
* @ORM\OneToMany(targetEntity="ClientPhone", mappedBy="clients", cascade={"persist"}) 
*/ 
protected $clientphones; 

Clientphone

/** 
* @ORM\ManyToOne(targetEntity="Client", inversedBy="clientphones") 
* @ORM\JoinColumn(name="client_id", referencedColumnName="id", nullable=false) 
*/ 
protected $clients; 

ClientType形式

public function buildForm(FormBuilderInterface $builder, array $options) 
{ 
    $builder 
     ->add('firstName', 'text', array(
      'label' => 'First Name' 
    )) 
     ->add('lastName', 'text', array(
      'label' => 'Last Name' 
    )) 
     ->add('email', 'text', array(
      'label' => 'E-mail Address' 
    )) 
     ->add('clientphones', 'collection', array(
      'type'   => new ClientPhoneType(), 
      'allow_add' => true, 
      'allow_delete' => true, 
      'by_reference' => false, 
    )); 
} 

ClientPhoneType形式

public function buildForm(FormBuilderInterface $builder, array $options) 
{ 
    $builder->add('home', 'text'); 
    $builder->add('office', 'text'); 
    $builder->add('mobile', 'text'); 
} 

ClientController

$client = new Client(); 

    $phone = new ClientPhone(); 
//  $phone->home = '2134959249'; 
//  $phone->office = '2134959249'; 
//  $phone->mobile = '2134959249'; 
    $client->getClientPhones()->add($phone); 

    $form = $this->createForm(new ClientType(), $client, array(
     'action' => $this->generateUrl('client'), 
     'method' => 'POST', 
    )); 
    $form->handleRequest($request); 

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

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

     $session = $request->getSession(); 
     $session->getFlashBag()->add('message', 'Client successfully saved to database'); 

     return $this->redirect($this->generateUrl('client')); 
    } 

Answer 1

找出問題所在。問題出在addClientphone函數中的客戶端實體。我不得不改變預先生成的代碼：

$this->clientphones[] = $clientphones; 

以下幾點：

if (!$this->clientphones->contains($clientphone)) { 
     $clientphone->setClients($this); 
     $this->clientphones->add($clientphone); 
    } 

    return $this->clientphones;