Symfony2.1实体字段类型多重展开不保存 - Symfony2.1 entity field type multiple expanded not saving

Symfony2.1 entity field type multiple expanded not saving

在Symfony 2.1中使用实体字段类型时，我遇到了一些双向关系(一对多)的麻烦。当创建子对象(Product)并选择父对象(Category)时，一切都很正常，它按预期的方式创建和保存。当创建父(类别)和选择由Symfony2的表单系统生成的多个子(产品)复选框时，问题就出现了。不保存。

我将把我的示例类放在下面，但是它可能更容易克隆我的示例项目repo - https://github.com/domudall/multiple-expanded-entity-choice-issue

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;
    }
}

产品

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();
        }
    }
}

如果你能指出我的错误，我将不胜感激。

注意

我不想使用原则cascade选项，宁愿在实体中的逻辑单元测试从数据库分开。

如果不想层叠，就必须手动持久化这些实体。

我使用集合的map()方法(如下)，但您可以通过集合的toArray()方法使用foreach或array_map。

试试下面的控制器代码:

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();
    }
}