/
ResizeFormListener.php
165 lines (139 loc) · 5.05 KB
/
ResizeFormListener.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
<?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\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\Form\Exception\UnexpectedTypeException;
use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\Form\FormInterface;
/**
* Resize a collection form element based on the data sent from the client.
*
* @author Bernhard Schussek <bschussek@gmail.com>
*/
class ResizeFormListener implements EventSubscriberInterface
{
protected $type;
protected $options;
protected $allowAdd;
protected $allowDelete;
private $deleteEmpty;
/**
* @param bool $allowAdd Whether children could be added to the group
* @param bool $allowDelete Whether children could be removed from the group
* @param bool|callable $deleteEmpty
*/
public function __construct(string $type, array $options = [], bool $allowAdd = false, bool $allowDelete = false, $deleteEmpty = false)
{
$this->type = $type;
$this->allowAdd = $allowAdd;
$this->allowDelete = $allowDelete;
$this->options = $options;
$this->deleteEmpty = $deleteEmpty;
}
public static function getSubscribedEvents()
{
return [
FormEvents::PRE_SET_DATA => 'preSetData',
FormEvents::PRE_SUBMIT => 'preSubmit',
// (MergeCollectionListener, MergeDoctrineCollectionListener)
FormEvents::SUBMIT => ['onSubmit', 50],
];
}
public function preSetData(FormEvent $event)
{
$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 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, $this->type, array_replace([
'property_path' => '['.$name.']',
], $this->options));
}
}
public function preSubmit(FormEvent $event)
{
$form = $event->getForm();
$data = $event->getData();
if (!\is_array($data)) {
$data = [];
}
// Remove all empty rows
if ($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, $this->type, array_replace([
'property_path' => '['.$name.']',
], $this->options));
}
}
}
}
public function onSubmit(FormEvent $event)
{
$form = $event->getForm();
$data = $event->getData();
// At this point, $data is an array or an array-like object that already contains the
// new entries, which were added by the data mapper. The data mapper ignores existing
// entries, so we need to manually unset removed entries in the collection.
if (null === $data) {
$data = [];
}
if (!\is_array($data) && !($data instanceof \Traversable && $data instanceof \ArrayAccess)) {
throw new UnexpectedTypeException($data, 'array or (\Traversable and \ArrayAccess)');
}
if ($this->deleteEmpty) {
$previousData = $form->getData();
/** @var FormInterface $child */
foreach ($form as $name => $child) {
$isNew = !isset($previousData[$name]);
$isEmpty = \is_callable($this->deleteEmpty) ? ($this->deleteEmpty)($child->getData()) : $child->isEmpty();
// $isNew can only be true if allowAdd is true, so we don't
// need to check allowAdd again
if ($isEmpty && ($isNew || $this->allowDelete)) {
unset($data[$name]);
$form->remove($name);
}
}
}
// The data mapper only adds, but does not remove items, so do this
// here
if ($this->allowDelete) {
$toDelete = [];
foreach ($data as $name => $child) {
if (!$form->has($name)) {
$toDelete[] = $name;
}
}
foreach ($toDelete as $name) {
unset($data[$name]);
}
}
$event->setData($data);
}
}