Question

我在管理类中遇到表单事件问题。我已经在自定义实体类型中动态添加了选项。通过javascript通过控制器将数据库添加到数据库中。为了能够验证这些动态选择（在表单渲染后添加），我在字段中添加了一个PRE_SUBMIT表单事件。在提交表单之前，我将从db加载新的选项列表并删除并将该字段添加回表单以更新其选项，如下所示https://gist.github.com/webdevilopers/fef9e296e77bb879d138

在表单类型的twig模板中，我使用sonata_admin.admin变量来获取所需的数据。问题是当表单中存在错误时（在表单中的任何其他字段上），sonata_admin.admin变量形式为twig模板为null。

感谢您的帮助

管理员:: configureFormFields（）

$class = 'LibrinfoVarietiesBundle:SelectChoice';
    $repo = $this->getConfigurationPool()->getContainer()->get('doctrine.orm.entity_manager')->getRepository($class);
    $admin = $this;
    $formBuilder = $formMapper->getFormBuilder();

    $formBuilder->addEventListener(FormEvents::SUBMIT, function ($event) use ($formBuilder, $admin, $repo, $class) {
        $form = $event->getForm();
        $subject = $admin->getSubject($event->getData());
        $label = 'librinfo_varieties_admin_variety_regulatory_status_librinfo_core_customchoice';
        $choices = $repo->findBy(array(
            'label' => $label
        ));

        $choiceViews = array();
        foreach ($choices as $choice)
        {
            $choiceViews[$choice->getvalue()] = $choice;
        }
        if ($form->has('regulatory_status'))
        {
            $form->remove('regulatory_status');
        }

        $customChoice = $formBuilder->getFormFactory()->createNamed('regulatory_status', 'librinfo_customchoice', null, array(
            'choices' => $choices,
            'class' => $class,
            'auto_initialize' => false,
        ));
        $form->add($customChoice);
    });

表单类型ConfigureOptions（）

$label = 'librinfo_varieties_admin_variety_regulatory_status_librinfo_core_customchoice';
     $choices = $this->repo->findBy(array(
                'label' => $label
            ));
     $choiceViews = array();
     foreach ($choices as $choice)
     {
         $choiceViews[$choice->getvalue()] = $choice;
     }

    $resolver->setDefaults(array(
        'choice_label' => 'value',
        'class'        => 'LibrinfoVarietiesBundle:SelectChoice',
        'placeholder'  => '', 
        'choices'      => $choiceViews,
    ));

树枝块

{% block librinfo_customchoice_widget %}
{% set subject = sonata_admin.admin.subject %}
{% spaceless %}
    {{ block('choice_widget') }}
    {% if subject.fieldset is defined %}
        <a id="{{ subject.fieldset }}_{{ subject.field }}" class="add-choice editable editable-click inline-input" href="#"><i class="fa fa-plus-circle"></i></a>
    {% else %}
        <a id="{{ block_prefixes.4 }}" class="add-choice editable editable-click inline-input" href="#"><i class="fa fa-plus-circle"></i></a>
    {% endif %}
{% endspaceless %}
{% endblock %}

Answer 1

这是因为当您通过事件直接向表单对象添加字段时，不会调用Sonata FormTypeFieldExtension。

但是我发现了一种解决方法，你必须首先使用FormMapper添加该字段。这将设置奏鸣曲管理员选项。

然后，在您的事件回调中，获取该字段的当前选项并将其与您自己的选项合并：

protected function configureFormFields(FormMapper $formMapper)
{
    $formMapper
        ->add('date', null, [
            'widget' => 'single_text',
        ])
        ->add('method', EnumType::class, [
            'class' => PaymentMethod::class,
            'translation_domain' => 'global',
            'prefix_label_with_class' => true,
            'attr' => [
                'class' => 'payment-method',
            ],
        ])
        ->add('reference', TextType::class, [
            'required' => false,
            'attr' => [
                'class' => 'payment-reference',
            ]
        ])
        ->add('amount')
    ;

    $builder = $formMapper->getFormBuilder();
    $factory = $builder->getFormFactory();

    $referenceTypeMaker = function (FormEvent $event) use ($factory) {
        $form = $event->getForm();
        $data = $event->getData();

        $paymentMethod = $data instanceof Payment ? $data->getMethod() : $data['method'];

        if (PaymentMethod::CREDIT_NOTE === $paymentMethod) {
            $form->add($factory->createNamed('reference', CreditNoteRefType::class, null, array_merge(
                $form->get('reference')->getConfig()->getOptions(), // Put back original options here.
                [
                    'auto_initialize' => false
                ]
            )));
        }
    };

    $builder->addEventListener(FormEvents::PRE_SET_DATA, $referenceTypeMaker);
    $builder->addEventListener(FormEvents::PRE_SUBMIT, $referenceTypeMaker);
}

正如您在我的代码示例中看到的那样，reference字段是TextType，但可以是CreditNoteRefType，具体取决于付款方式的选择。

将已定义的字段选项放回新的字段选项可以解决问题。

Sonata admin PRE_SUBMIT表单事件使admin twig变量为null

管理员:: configureFormFields（）

表单类型ConfigureOptions（）

树枝块

1 个答案: