/
ResizeFormListener.php
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/
ResizeFormListener.php
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<?php
declare(strict_types=1);
/*
* This file is part of the Sonata Project package.
*
* (c) Thomas Rabaix <thomas.rabaix@sonata-project.org>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Sonata\Form\EventListener;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\Form\Exception\UnexpectedTypeException;
use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\FormEvents;
/**
* Resize a collection form element based on the data sent from the client.
*
* @author Bernhard Schussek <bernhard.schussek@symfony-project.com>
*/
final class ResizeFormListener implements EventSubscriberInterface
{
private string $type;
private bool $resizeOnSubmit;
/**
* @var array<string, mixed>
*/
private array $typeOptions;
/**
* @var string[]
*/
private array $removed = [];
/**
* @var \Closure|null
*/
private $preSubmitDataCallback;
/**
* @param string $type
* @param array<string, mixed> $typeOptions
* @param bool $resizeOnSubmit
* @param \Closure|null $preSubmitDataCallback
*/
public function __construct(
$type,
array $typeOptions = [],
$resizeOnSubmit = false,
$preSubmitDataCallback = null
) {
$this->type = $type;
$this->resizeOnSubmit = $resizeOnSubmit;
$this->typeOptions = $typeOptions;
$this->preSubmitDataCallback = $preSubmitDataCallback;
}
public static function getSubscribedEvents(): array
{
return [
FormEvents::PRE_SET_DATA => 'preSetData',
FormEvents::PRE_SUBMIT => 'preSubmit',
FormEvents::SUBMIT => 'onSubmit',
];
}
/**
* @throws UnexpectedTypeException
*/
public function preSetData(FormEvent $event): void
{
$form = $event->getForm();
$data = $event->getData();
if (null === $data) {
$data = [];
}
if (!\is_array($data) && !$data instanceof \Traversable) {
throw new UnexpectedTypeException($data, 'array or \Traversable');
}
// First remove all rows except for the prototype row
foreach ($form as $name => $child) {
$form->remove((string) $name);
}
// Then add all rows again in the correct order
foreach ($data as $name => $value) {
$options = array_merge($this->typeOptions, [
'property_path' => '['.$name.']',
'data' => $value,
]);
$name = \is_int($name) ? (string) $name : $name;
$form->add($name, $this->type, $options);
}
}
/**
* @throws UnexpectedTypeException
*/
public function preSubmit(FormEvent $event): void
{
if (!$this->resizeOnSubmit) {
return;
}
$form = $event->getForm();
$data = $event->getData();
if (null === $data || '' === $data) {
$data = [];
}
if (!\is_array($data) && !$data instanceof \Traversable) {
throw new UnexpectedTypeException($data, 'array or \Traversable');
}
// Remove all empty rows except for the prototype row
foreach ($form as $name => $child) {
$form->remove((string) $name);
}
// Add all additional rows
foreach ($data as $name => $value) {
if (!$form->has((string) $name)) {
$buildOptions = [
'property_path' => '['.$name.']',
];
if (null !== $this->preSubmitDataCallback) {
$buildOptions['data'] = \call_user_func($this->preSubmitDataCallback, $value);
}
$options = array_merge($this->typeOptions, $buildOptions);
$name = \is_int($name) ? (string) $name : $name;
$form->add($name, $this->type, $options);
}
if (isset($value['_delete'])) {
$this->removed[] = $name;
}
}
}
/**
* @throws UnexpectedTypeException
*/
public function onSubmit(FormEvent $event): void
{
if (!$this->resizeOnSubmit) {
return;
}
$form = $event->getForm();
$data = $event->getData();
if (null === $data) {
$data = [];
}
if (
!\is_array($data)
&& (!$data instanceof \Traversable || !$data instanceof \ArrayAccess)
) {
throw new UnexpectedTypeException($data, 'array or \Traversable&\ArrayAccess');
}
foreach ($data as $name => $child) {
if (!$form->has((string) $name)) {
unset($data[$name]);
}
}
// remove selected elements
foreach ($this->removed as $pos) {
unset($data[$pos]);
}
$event->setData($data);
}
}