FormType实体:已使用

时间:2013-06-02 15:05:51

标签: symfony

我有三个实体:PurchaseOrder,Article和ArticleOrderReference。我需要ArticleOrderReference实体为每个Order to Article Relation提供一个整数值的数量。

所以purchaseOrder可以有很多ArticleOrderReferences。一篇文章也可以有很多ArticleOrderReferences。

我的问题是,例如与具有ID:1的PurchaseOrder有关系的每个ArticleOrderReference可能只有一次相同的Article。所以我不能再次选择同一篇文章了。

在我的FormBuilderType中:

$builder->add('article', 'entity', array(
         'class' => 'AcmeAppBundle:Article',
         'property' => 'name',
    ));
$builder->add('amount', 'integer');

我怎么能意识到这一点?

的PurchaseOrder:

class PurchaseOrder{

 /** @ORM\OneToMany(targetEntity="ArticleOrderReference", mappedBy="purchaseOrder") */
protected $purchaseOrders;

ArticleOrderReference:

/** @ORM\ManyToOne(targetEntity="Article", inversedBy="articles") */
protected $article;

/** @ORM\ManyToOne(targetEntity="PurchaseOrder", inversedBy="purchaseOrders") */
protected $purchaseOrder;

/**
 * @var integer
 *
 * @ORM\Column(name="amount", type="integer")
 */
private $amount;

文章:

 /**
 * @var string
 *
 * @ORM\Column(name="name", type="string", length=255)
 */
private $name;

/** @ORM\OneToMany(targetEntity="ArticleOrderReference", mappedBy="article") */
protected $articles;

控制器:

$articleOrder = new ArticleOrderReference();

    $form = $this->createForm(new ArticleOrderType(), $articleOrder);

    // process the form on POST
    if ($request->isMethod('POST')) {
        $form->bind($request);
        if ($form->isValid()) {               

            $purchaseOrder = $this->getDoctrine()
            ->getRepository('AcmeAppBundle:PurchaseOrder')
            ->find($id);

            if (!$purchaseOrder) {
                throw $this->createNotFoundException(
                        'No order found for id '.$id
                );
            }               

            $articleOrder->setPurchaseOrder($purchaseOrder); 

            $em = $this->getDoctrine()->getManager();

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


            return $this->redirect($this->generateUrl('order', array('id' => $id)));

        }
 }

1 个答案:

答案 0 :(得分:0)

您可以使用UniqueEntity constraint确保一个Article仅通过表格PurchaseOrderArticleOrderReference相关联一次。

您需要更改ArticleOrderReference实体,如下所示:

namespace Acme\UserBundle\Entity;
use Doctrine\ORM\Mapping as ORM;

// DON'T forget this use statement!!!
use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;

/**
 * @ORM\Entity
 * @UniqueEntity({"article", "purchaseOrder"})
 */
class ArticleOrderReference
{
    /** @ORM\ManyToOne(targetEntity="Article", inversedBy="articles") */
    protected $article;

    /** @ORM\ManyToOne(targetEntity="PurchaseOrder", inversedBy="purchaseOrders") */
    protected $purchaseOrder;

    /**
     * @var integer
     *
     * @ORM\Column(name="amount", type="integer")
     */
    private $amount;
    // ...
}