forms - Symfony 2 如何使用某些标准嵌入集合表单

Question

我在使用嵌入集合表单时遇到问题，因为我想过滤给定集合中显示的数据。即

<?php
Class Parent
{
    ... some attributes ...

    /**
     * @ORM\OneToMany(targetEntity="Child", mappedBy="parent", cascade={"all"})
     */
     private $children;

    ... some setters & getters ...

}

Class Child
{
    private $attribute1;

    private $attribute2;

    /**
     * @ORM\ManyToOne(targetEntity="Parent", inversedBy="children")
     * @ORM\JoinColumn(name="parent_id", referencedColumnName="id")
     */
     private $parent;

     ... some setters & getters ...
}

然后我使用以下方法构建表单:

class ParentChildType extends AbstractType
{
    public function buildForm(FormBuilder $builder, array $options)
    {
        $builder
        ->add('children', 'collection', array(
            'type' => ChildrenType(),
            'allow_add' => true,
        ));
    }
}
...
On controller:

    $parent = $this->getDoctrine()->getEntityManager()->getRepository('AcmeBundle:Parent')->find( $id );
    $forms = $this->createForm( new ParentChildType(), $parent)->createView();

    and then..

    return array('forms' => $forms->crateView());

我的问题是，当我想通过 Child 模型类的 $attribute1 和/或 $attribute2 过滤集合时。

有一种方法可以按此收集表单的条件进行过滤吗？

Answer 1

看来我必须在使用 CreateQuery 之前过滤对象，然后使用这个过滤后的对象创建表单。 像这样:

$parent = $this->getDoctrine()->getEntityManager()->createQuery("
            SELECT p, c 
            FROM AcmeBundle:Parent p
            JOIN p.children c
            WHERE c.attribute1 = :attr1
              AND c.attribute2 = :attr2
           ")
           ->setParameter('attr1', <some_value>)
           ->setParameter('attr2', <some_value>)
           ->getOneOrNullResult();
$forms = $this->createForm( new ParentChildType(), $parent)->createView();
....
return array('forms' => $form->createView());