Symfony - 如何将相关实体数据传递给实体字段的选择

Question

大家好日子

我有与具有多对一关系的ProductType实体相关的Product实体

我有基于'entity'字段类型的自定义ProductsType字段：

class ProductsType extends AbstractType
{

    /**
     * @param OptionsResolverInterface $resolver
     */
    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {

        $resolver->setDefaults(
            [
                'label' => 'oq.company.interest.label',
                'class' => 'OQReferenceBundle:Product',
                'required' => false,
                'expanded' => true,
                'multiple' => true,
                'choice_label' => 'name',
                'empty_value' => 'oq.reference.interest.choose',
                'query_builder' => function ($repository) {
                    $qb = $repository->createQueryBuilder('p');

                    $qb->leftJoin('OQReferenceBundle:ProductType', 'pt', 'WITH', 'p.productType = pt.id')
                        ->addOrderBy('pt.name', 'ASC')
                        ->addOrderBy('p.name', 'ASC');

                    return $qb;
                },
            ]
        );
    }

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

    /**
     * @return string
     */
    public function getParent()
    {
        return 'entity';
    }
}

'oq_products_selector_widget'代码：

{% block oq_products_selector_widget %}

    <div {{ block('widget_container_attributes') }}>

        {% for id, child in form %}
            <div class="oro-clearfix">
                {{ form_widget(child) }}
                <label for="{{ child.vars.id }}">
                    {{ choices[id].data.name }} ({{ choices[id].data.productType.name }})
                </label>
            </div>
        {% endfor %}

    </div>

{% endblock %}

但是当我尝试渲染表单时，有一个例外：

  

无法访问空变量

上的属性（“id”）

据我了解，相关实体数据未传递到选择数据数组，无法通过choices[id].data.productType.name

显示

如何将此数据传递给选择？

Answer 1

嗯，我解决了那个麻烦。

我认为实体字段类型为没有相关实体的选择数组水合对象。所以我将自定义字段类型父级切换为＆＃39; choice＆＃39;，然后我收到了所有实体，用于选择EntityManager和标准存储库的findAll方法，并从所有链接实体获取数据（ProductType ）没有任何问题

代码

class ProductsType extends AbstractType
{

    /** @var EntityManager */
    protected $em;

    public function __construct(EntityManager $em)
    {
        $this->em = $em;
    }

    /**
     * {@inheritdoc}
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->addModelTransformer(new ProductsTransformer($this->em));
    }

    /**
     * @param OptionsResolverInterface $resolver
     */
    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {

        $choices = array();
        $choicesAttrs = array();

        /** @var ProductRepository $repo */
        $repo = $this->em->getRepository("OQReferenceBundle:Product");
        if ($products = $repo->getProductsSortedByProductType()) {
            /** @var Product $product */
            foreach ($products as $product) {
                $choices[$product->getId()] = $product->getName();
                $choicesAttrs[$product->getName()] = array('data-product-type' => $product->getProductType()->getName());
            }
        }

        $resolver->setDefaults(
            [
                'label' => 'oq.company.interest.label',
                'required' => false,
                'expanded' => true,
                'multiple' => true,
                'empty_value' => 'oq.reference.interest.choose',
                'choices' => $choices,
                'choice_attr' => $choicesAttrs,
            ]
        );
    }

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

    /**
     * @return string
     */
    public function getParent()
    {
        return 'choice';
    }
}

正如您所看到的，我可以选择所有实体并将其放置在数组中。然后我得到所有相关的实体名称并将它们放入另一个数组中。并将此数组传递给'choice_attr' => $choicesAttrs参数的选项。

之后我可以访问这些附加数据

{% block oq_products_selector_widget %}

    <div {{ block('widget_container_attributes') }}>
        <div class="horizontal">

            {% set productType = '' %}

            {% for id, child in form %}
                <div class="oro-clearfix">

                    {% if productType != child.vars.attr['data-product-type'] %}
                        {% set productType = child.vars.attr['data-product-type'] %}
                        <div style="margin-bottom: 6px;">
                            <strong>{{ productType }}</strong>
                        </div>
                    {% endif %}

                    {{ form_widget(child) }}
                    <label for="{{ child.vars.id }}">
                        {{ child.vars.label }}
                    </label>
                </div>
            {% endfor %}

        </div>
    </div>

{% endblock %}