Symfony2.1實體字段類型多個展開不保存

Question

在Symfony 2.1中使用實體字段類型時，我遇到了雙向關係（一對多）的問題。創建子項（產品）並選擇父項（類別）時，所有內容都是hunky dory，它是按預期創建並保持的。創建父級（Category）並選擇由Symfony2的表單系統生成的多個子級（Product）複選框時會出現問題。 這不會持續。

我要把我下面的示例類，但它可能會更容易克隆我的示例項目回購 - https://github.com/domudall/multiple-expanded-entity-choice-issue

類別

class Category 
{ 
    protected $id; 
    protected $name; 

    /** 
    * @ORM\OneToMany(targetEntity="Product", mappedBy="category") 
    */ 
    protected $products; 

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

    public function addProduct($product) 
    { 
     if (!$this->products->contains($product)) { 
      $this->products->add($product); 
      $product->setCategory($this); 
     } 

     return $this; 
    } 

    public function setProducts($products) 
    { 
     foreach ($products as $product) { 
      $this->addProduct($product); 
     } 

     return $this; 
    } 

    public function removeProducts() 
    { 
     if ($this->products->contains($product)) { 
      $this->products->remove($product); 
     } 

     return $this; 
    } 
} 

產品

class Product 
{ 
    protected $id; 
    protected $name; 

    /** 
    * @ORM\ManyToOne(targetEntity="Category", inversedBy="products") 
    */ 
    protected $category; 

    public function setCategory(Category $category) 
    { 
     $this->category = $category; 
     $category->addProduct($this); 

     return $this; 
    } 

    public function getCategory() 
    { 
     return $this->category; 
    } 
} 

DefaultController

class DefaultController extends Controller 
{ 
    public function categoryCreateAction(Request $request) 
    { 
     $category = new Category(); 

     $form = $this 
      ->createFormBuilder($category) 
      ->add('name', 'text', array()) 
      ->add('products', 'entity', array(
       'class' => 'AcmeShopBundle:Product', 
       'property' => 'name', 
       'required' => false, 
       'expanded' => true, 
       'multiple' => true, 
      )) 
      ->getForm(); 

     if ($request->getMethod() == 'POST') { 
      $this->save($category, $form, $request); 
     } 
    } 

    public function productCreateAction(Request $request) 
    { 
     $product = new Product(); 

     $form = $this 
      ->createFormBuilder($product) 
      ->add('name', 'text') 
      ->add('category', 'entity', array(
       'class' => 'AcmeShopBundle:Category', 
       'property' => 'name', 
       'required' => false, 
      )) 
      ->getForm(); 

     if ($request->getMethod() == 'POST') { 
      $this->save($product, $form, $request); 
     } 
    } 

    protected function save($entity, $form, $request) 
    { 
     $form->bind($request); 

     if ($form->isValid()) { 
      $em = $this->getDoctrine()->getManager(); 
      $em->persist($entity); 
      $em->flush(); 
     } 
    } 
} 

任何指向我要去哪裏錯誤的指針將不勝感激。

注意

我不想使用Doctrine cascade選擇，寧願在實體單元測試的邏輯從數據庫中分離出來。

Answer 1

如果您不想級聯，則必須手動保留這些實體。

我用收集的map()法（下同），但你可以通過收集的toArray()法foreach或array_map做到這一點。

嘗試下面的控制器代碼：

protected function saveCategory($category, $form, $request) 
{ 
    $form->bind($request); 

    if ($form->isValid()) { 
     $em = $this->getDoctrine()->getManager();   
     $entity->getProducts()->map(
      function($product) use ($em) { 
       $em->persist($product); 
      } 
     ); 

     $em->persist($category); 
     $em->flush(); 
    } 
}