Question

我有选择字段customer类型entity的表单，我希望在另一个地方选择一些客户（输入或标签，无论如何）更改数据，我使用烹饪书中的示例但不工作< / p>

我的表格

    /**
 * @param FormBuilderInterface $builder
 * @param array $options
 */
public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder
        ->add('customer', 'entity', array(
            'class' => Customer::class,
            'property' => 'name',
            'empty_value' => 'Choice Customer',
            'query_builder' => function ($repository) {
                /** @var CustomerRepository  $repository */
                return $repository->getAllQuery();
            },
            'required' => true
        ));

    $builder->addEventListener(
        FormEvents::PRE_SET_DATA,
        function (FormEvent $event) {
            $form = $event->getForm();
            $data = $event->getData();

            /** @var Customer $customer */
            $customer = $data->getCustomer(); //always have null, why ?
            $positions = null === $customer ? '-' : 'its_work';

            $form
                ->add('invoicing_address', 'text', [
                    'mapped' => false,
                    'data' => $positions
                ]);
        }
    );


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

我的js？

var $sport = $('#out_bound_invoice_customer');
// When sport gets selected ...
$sport.change(function() {
// ... retrieve the corresponding form.
var $form = $(this).closest('form');
// Simulate form data, but only include the selected sport value.
var data = {};
data[$sport.attr('name')] = $sport.val();
// Submit data via AJAX to the form's action path.
$.ajax({
    url : $form.attr('action'),
    type: $form.attr('method'),
    data : data,
    success: function(html) { // in html always have empty, like ''
        // Replace current position field ...
        $('#out_bound_invoice_address').replaceWith(
            // ... with the returned one from the AJAX response.
            $(html).find('#out_bound_invoice_address')
        );
        // Position field now displays the appropriate positions.
    }
});
});

当我在数据中的js中更改客户时，有姓名表和客户名称密钥和数据ID，然后在请求中执行我看到此数据

在FormEvents::POST_SUBMIT中使用事件表单$customer时，我有客户实体

        $builder->get('customer')->addEventListener(
        FormEvents::POST_SUBMIT,
        function (FormEvent $event) use ($formModifier) {
            $customer = $event->getForm()->getData();
            $formModifier($event->getForm()->getParent(), $customer);
        }
    );

我希望了解为什么我需要PRE_SET_DATA, POST_SET_DATA这个事件null

我的树枝

{{ form_start(form) }}
{{ form_errors(form) }}
    {{ form_label(form.customer, 'customer')}}
    {{ form_widget(form.customer, {'attr': {'class': 'select2'}}) }}

    {{ form_label(form.invoicing_address)}}
    {{ form_widget(form.invoicing_address) }}
{{ form_end(form) }}

为什么我在表单侦听器中的$customer中都有null，以及如何更改另一个字段（标签或默认数据，无论在另一个字段中是什么）？

Symfony表单监听器

0 个答案: