为什么symfony notnull containt为false抛出错误?

我面临着一个问题 NotNull symfony表单验证中的约束。

使用以下表格:

class SchedulableType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->addEventListener(FormEvents::PRE_SUBMIT, function (FormEvent $event) use ($options) {
            $form = $event->getForm();
                $form
                    ->add('dateFrom', DateTimeType::class, array(
                        'constraints' => array(
                            new NotNull()
                        ),
                        'widget' => 'single_text', // In order to manage format
                        'format' => 'y-MM-dd HH:mm:ss'
                    ))
                    ->add('dateTo', DateTimeType::class, array(
                        'constraints' => array(
                            new NotNull()
                        ),
                        'widget' => 'single_text', // In order to manage format
                        'format' => 'y-MM-dd HH:mm:ss'
                    ))
                    ->add('value', $options['valueType'], $options['valueOptions']);
        });
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(array(
            'valueType' => null,
            'valueOptions' => array(),
        ));
    }
}

我的事件中的数据如下:

array (size=3)
  'dateFrom' => boolean false
  'dateTo' => boolean false
  'value' => string 'value' (length=5)

但我收到了以下错误消息:

{
    "status": "400",
    "title": "This value should not be null.",
    "source": {
        "source": {
            "pointer": "/SCHEDULABLE/dateFrom/0"
        }
    }
},
{
    "status": "400",
    "title": "This value should not be null.",
    "source": {
        "source": {
            "pointer": "/SCHEDULABLE/dateTo/0"
        }
    }
}

为什么是 非零 如果我的值是 false ?

您可以查看约束类: symfony/src/Symfony/Component/Validator/Constraints/NotNullValidator.php

聚苯乙烯 :表单验证用于API,这就是错误是JSON格式的原因。