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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\EventListener;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\Exception\UnexpectedTypeException;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
/**
* Resize a collection form element based on the data sent from the client.
*
* @author Bernhard Schussek <bschussek@gmail.com>
*/
class ResizeFormListener implements EventSubscriberInterface
{
/**
* @var string
*/
protected $type;
/**
* @var array
*/
protected $options;
/**
* Whether children could be added to the group
* @var Boolean
*/
protected $allowAdd;
/**
* Whether children could be removed from the group
* @var Boolean
*/
protected $allowDelete;
public function __construct($type, array $options = array(), $allowAdd = false, $allowDelete = false)
{
$this->type = $type;
$this->allowAdd = $allowAdd;
$this->allowDelete = $allowDelete;
$this->options = $options;
}
public static function getSubscribedEvents()
{
return array(
FormEvents::PRE_SET_DATA => 'preSetData',
FormEvents::PRE_SUBMIT => 'preSubmit',
// (MergeCollectionListener, MergeDoctrineCollectionListener)
FormEvents::SUBMIT => array('onSubmit', 50),
);
}
public function preSetData(FormEvent $event)
{
$form = $event->getForm();
$data = $event->getData();
if (null === $data) {
$data = array();
}
if (!is_array($data) && !($data instanceof \Traversable && $data instanceof \ArrayAccess)) {
throw new UnexpectedTypeException($data, 'array or (\Traversable and \ArrayAccess)');
}
// First remove all rows
foreach ($form as $name => $child) {
$form->remove($name);
}
// Then add all rows again in the correct order
foreach ($data as $name => $value) {
$form->add($name, $this->type, array_replace(array(
'property_path' => '['.$name.']',
), $this->options));
}
}
public function preSubmit(FormEvent $event)
{
$form = $event->getForm();
$data = $event->getData();
if (null === $data || '' === $data) {
$data = array();
}
if (!is_array($data) && !($data instanceof \Traversable && $data instanceof \ArrayAccess)) {
throw new UnexpectedTypeException($data, 'array or (\Traversable and \ArrayAccess)');
}
// Remove all empty rows
if ($this->allowDelete) {
foreach ($form as $name => $child) {
if (!isset($data[$name])) {
$form->remove($name);
}
}
}
// Add all additional rows
if ($this->allowAdd) {
foreach ($data as $name => $value) {
if (!$form->has($name)) {
$form->add($name, $this->type, array_replace(array(
'property_path' => '['.$name.']',
), $this->options));
}
}
}
}
public function onSubmit(FormEvent $event)
{
$form = $event->getForm();
$data = $event->getData();
if (null === $data) {
$data = array();
}
if (!is_array($data) && !($data instanceof \Traversable && $data instanceof \ArrayAccess)) {
throw new UnexpectedTypeException($data, 'array or (\Traversable and \ArrayAccess)');
}
// The data mapper only adds, but does not remove items, so do this
// here
if ($this->allowDelete) {
foreach ($data as $name => $child) {
if (!$form->has($name)) {
unset($data[$name]);
}
}
}
$event->setData($data);
}
/**
* Alias of {@link preSubmit()}.
*
* @deprecated Deprecated since version 2.3, to be removed in 3.0. Use
* {@link preSubmit()} instead.
*/
public function preBind(FormEvent $event)
{
$this->preSubmit($event);
}
/**
* Alias of {@link onSubmit()}.
*
* @deprecated Deprecated since version 2.3, to be removed in 3.0. Use
* {@link onSubmit()} instead.
*/
public function onBind(FormEvent $event)
{
$this->onSubmit($event);
}
}
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