/
FileType.php
118 lines (100 loc) · 3.36 KB
/
FileType.php
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Form\Extension\Core\Type;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\Form\FormView;
use Symfony\Component\OptionsResolver\Options;
use Symfony\Component\OptionsResolver\OptionsResolver;
class FileType extends AbstractType
{
/**
* {@inheritdoc}
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->addEventListener(FormEvents::PRE_SUBMIT, function (FormEvent $event) use ($options) {
$form = $event->getForm();
$requestHandler = $form->getConfig()->getRequestHandler();
$data = null;
if ($options['multiple']) {
$data = array();
$files = $event->getData();
if (!is_array($files)) {
$files = array();
}
foreach ($files as $file) {
if ($requestHandler->isFileUpload($file)) {
$data[] = $file;
}
}
// submitted data for an input file (not required) without choosing any file
if (array(null) === $data || array() === $data) {
$emptyData = $form->getConfig()->getEmptyData();
$data = is_callable($emptyData) ? call_user_func($emptyData, $form, $data) : $emptyData;
}
$event->setData($data);
} elseif (!$requestHandler->isFileUpload($event->getData())) {
$emptyData = $form->getConfig()->getEmptyData();
$data = is_callable($emptyData) ? call_user_func($emptyData, $form, $data) : $emptyData;
$event->setData($data);
}
});
}
/**
* {@inheritdoc}
*/
public function buildView(FormView $view, FormInterface $form, array $options)
{
if ($options['multiple']) {
$view->vars['full_name'] .= '[]';
$view->vars['attr']['multiple'] = 'multiple';
}
$view->vars = array_replace($view->vars, array(
'type' => 'file',
'value' => '',
));
}
/**
* {@inheritdoc}
*/
public function finishView(FormView $view, FormInterface $form, array $options)
{
$view->vars['multipart'] = true;
}
/**
* {@inheritdoc}
*/
public function configureOptions(OptionsResolver $resolver)
{
$dataClass = function (Options $options) {
return $options['multiple'] ? null : 'Symfony\Component\HttpFoundation\File\File';
};
$emptyData = function (Options $options) {
return $options['multiple'] ? array() : null;
};
$resolver->setDefaults(array(
'compound' => false,
'data_class' => $dataClass,
'empty_data' => $emptyData,
'multiple' => false,
));
}
/**
* {@inheritdoc}
*/
public function getName()
{
return 'file';
}
}