Symfony - 完整性約束違規：1062重複條目

Question

我試圖找到我的問題的答案，但它不成功。我正在使用Symfony（我已經使用它2個月），當我想要創建多對多的關係時遇到問題。

我有房子，我有服務。一個家庭可以有很多服務，一個服務可以有很多家庭。一切都OK，我明白了許多許多作品與學說的路上，我在我的控制器刷新之前，堅持所有的值，但我總是得到這個消息：

An exception occurred while executing 'INSERT INTO homess_services (home_id, service_id) VALUES (?, ?)' with params [25, 7]: 

SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '25' for key 'home_id' 

我的代碼是（家實體）：

<?php 

namespace Filip\SymfonyBundle\Entity; 

use Doctrine\ORM\Mapping as ORM; 
use Doctrine\Common\Collections\ArrayCollection; 
use Filip\SymfonyBundle\FilipSymfonyBundle; 

/** 
* Home 
* 
* @ORM\Table(name="homes") 
* @ORM\Entity 
* 
* 
*/ 
class Home 
{ 
    /** 
    * @var ArrayCollection 
    * 
    * @ORM\ManyToMany(targetEntity="Service", inversedBy="homes") 
    * @ORM\JoinTable(name="homess_services") 
    */ 




     protected $services; 

    public function __construct() { 
      $this->photos = new ArrayCollection(); 
      $this->services = new ArrayCollection(); 
     } 

/** 
    * Renders a publication as a string 
    * 
    * @return string 
    */ 
    public function __toString(){ 
     return $this->getName(); 
    } 

/** 
    * Add services 
    * 
    * @param \Filip\SymfonyBundle\Entity\Service $services 
    * @return Home 
    */ 
    public function addService(\Filip\SymfonyBundle\Entity\Service $services) 
    { 
     $this->services[] = $services; 

     return $this; 
    } 

    /** 
    * Remove services 
    * 
    * @param \Filip\SymfonyBundle\Entity\Service $services 
    */ 
    public function removeService(\Filip\SymfonyBundle\Entity\Service $services) 
    { 
     $this->services->removeElement($services); 
    } 

    /** 
    * Get services 
    * 
    * @return \Doctrine\Common\Collections\Collection 
    */ 
    public function getServices() 
    { 
     return $this->services; 
    } 

服務實體：

<?php 

namespace Filip\SymfonyBundle\Entity; 

use Doctrine\ORM\Mapping as ORM; 
use Filip\SymfonyBundle\FilipSymfonyBundle; 

/** 
* Service 
* 
* @ORM\Table("services") 
* @ORM\Entity 

*/ 
class Service 
{ 


    /** 
    * @var ArrayCollection 
    * 
    * @ORM\ManyToMany(targetEntity="Home", mappedBy="services") 
    */ 
    protected $homes; 

    /** 
    * @var integer 
    * 
    * @ORM\Column(name="id", type="integer") 
    * @ORM 

\Id 
* @ORM\GeneratedValue(strategy="AUTO") 
*/ 
private $id; 

/** 
* @var string 
* 
* @ORM\Column(name="category", type="string", length=45) 
*/ 
private $category; 

/** 
* @var string 
* 
* @ORM\Column(name="name", type="string", length=45) 
*/ 
private $name; 

/** 
* Renders a service as a string 
* 
* @return string 
*/ 




/** 
* Get id 
* 
6 

* @return integer 
*/ 
public function getId() 
{ 
    return $this->id; 
} 

/** 
* Set category 
* 
* @param string $category 
* @return Service 
*/ 
public function setCategory($category) 
{ 
    $this->category = $category; 

    return $this; 
} 

/** 
* Get category 
* 
* @return string 
*/ 
public function getCategory() 
{ 
    return $this->category; 
} 

/** 
* Set name 
* 
* @param string $name 
* @return Service 
*/ 
public function setName($name) 
{ 
    $this->name = $name; 

    return $this; 
} 

/** 
* Get name 
* 
* @return string 
*/ 
public function getName() 
{ 
    return $this->name; 
} 

public function __construct() 
{ 
    $this->homes = new ArrayCollection(); 
} 

/** 
* Add homes 
* 
* @param \Filip\SymfonyBundle\Entity\Home $homes 
* @return Service 
*/ 
public function addHome(\Filip\SymfonyBundle\Entity\Home $homes) 
{ 
    $this->homes[] = $homes; 

    return $this; 
} 

/** 
* Remove homes 
* 
* @param \Filip\SymfonyBundle\Entity\Home $homes 
*/ 
public function removeHome(\Filip\SymfonyBundle\Entity\Home $homes) 
{ 
    $this->homes->removeElement($homes); 
} 

/** 
* Get homes 
* 
* @return \Doctrine\Common\Collections\Collection 
*/ 
public function getHomes() 
{ 
    return $this->homes; 
} 
} 

表格（HomeType）：

<?php 

namespace Filip\SymfonyBundle\Form; 

use Symfony\Component\Form\AbstractType; 
use Symfony\Component\Form\FormBuilderInterface; 
use Symfony\Component\OptionsResolver\OptionsResolverInterface; 


class HomeType extends AbstractType 
{ 
    /** 
    * @param FormBuilderInterface $builder 
    * @param array $options 
    */ 
    public function buildForm(FormBuilderInterface $builder, array $options) 
    { 
     $builder 
      ->add('name') 
      ->add('city') 
      ->add('region') 
      ->add('phone') 
      ->add('address') 
      ->add('email') 
      ->add('website') 
      ->add('content') 
      ->add('youtubeApi') 
      ->add('premium') 

      ->add('services' , 'entity' , array(
       'class' => 'FilipSymfonyBundle:Service' , 
       'property' => 'name' , 
       'expanded' => true , 
       'multiple' => true , 
       )); 
    } 

    /** 
    * @param OptionsResolverInterface $resolver 
    */ 
    public function setDefaultOptions(OptionsResolverInterface $resolver) 
    { 
     $resolver->setDefaults(array(
      'data_class' => 'Filip\SymfonyBundle\Entity\Home' 
     )); 
    } 

    /** 
    * @return string 
    */ 
    public function getName() 
    { 
     return 'filip_symfonybundle_home'; 
    } 
} 

首頁控制器：

/** 
    * Creates a new Home entity. 
    * 
    * @Route("/", name="home_create") 
    * @Method("POST") 
    * @Template("FilipSymfonyBundle:Home:new.html.twig") 
    */ 
    public function createAction(Request $request) 
    { 
     $entity = new Home(); 
     $form = $this->createCreateForm($entity); 
     $form->handleRequest($request); 

     if ($form->isValid()) { 

      $em = $this->getDoctrine()->getManager(); 
      $services = $entity->getServices(); 

      foreach($services as $service) { 
       $entity->addService($service); 
       $em->persist($service); 
      } 
      $em->persist($entity); 
      $em->flush(); 

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

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

    /** 
    * Creates a form to create a Home entity. 
    * 
    * @param Home $entity The entity 
    * 
    * @return \Symfony\Component\Form\Form The form 
    */ 
    private function createCreateForm(Home $entity) 
    { 
     $form = $this->createForm(new HomeType(), $entity, array(
      'action' => $this->generateUrl('home_create'), 
      'method' => 'POST', 
     )); 

     $form->add('submit', 'submit', array('label' => 'Create')); 

     return $form; 
    } 

Answer 1

在 if($form->isValid())部分，你不需要調用 addService()方法在foreach循環中爲symfony會爲你做這個的 handleRequest()呼叫

。 如果Home實體位於ManyToMany關係的擁有一側，則不需要持久保存每個Service對象。所以你可以嘗試去除整個foreach循環。