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[Form] Add "is empty callback" to form config
1 parent dab6732 commit 7c430bd

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‎UPGRADE-5.1.md

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UPGRADE FROM 5.0 to 5.1
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=======================
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Form
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----
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* Implementing the `FormConfigInterface` without implementing the `getIsEmptyCallback()` method
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is deprecated. The method will be added to the interface in 6.0.
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* Implementing the `FormConfigBuilderInterface` without implementing the `setIsEmptyCallback()` method
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is deprecated. The method will be added to the interface in 6.0.

‎UPGRADE-6.0.md

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UPGRADE FROM 5.x to 6.0
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=======================
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Form
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----
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* Added the `getIsEmptyCallback()` method to the `FormConfigInterface`.
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* Added the `setIsEmptyCallback()` method to the `FormConfigBuilderInterface`.

‎src/Symfony/Component/Form/ButtonBuilder.php

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@@ -466,6 +466,16 @@ public function getFormConfig()
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return $config;
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}
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/**
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* Unsupported method.
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*
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* @throws BadMethodCallException
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*/
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public function setIsEmptyCallback(?callable $isEmptyCallback)
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{
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throw new BadMethodCallException('Buttons do not support "is empty" callback.');
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}
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/**
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* Unsupported method.
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*/
@@ -738,6 +748,16 @@ public function getOption(string $name, $default = null)
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return \array_key_exists($name, $this->options) ? $this->options[$name] : $default;
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}
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/**
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* Unsupported method.
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*
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* @throws BadMethodCallException
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*/
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public function getIsEmptyCallback(): ?callable
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{
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throw new BadMethodCallException('Buttons do not support "is empty" callback.');
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}
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/**
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* Unsupported method.
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*

‎src/Symfony/Component/Form/CHANGELOG.md

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@@ -1,6 +1,14 @@
11
CHANGELOG
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=========
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5.1.0
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-----
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* Implementing the `FormConfigInterface` without implementing the `getIsEmptyCallback()` method
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is deprecated. The method will be added to the interface in 6.0.
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* Implementing the `FormConfigBuilderInterface` without implementing the `setIsEmptyCallback()` method
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is deprecated. The method will be added to the interface in 6.0.
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5.0.0
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-----
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‎src/Symfony/Component/Form/Extension/Core/Type/CheckboxType.php

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@@ -60,6 +60,9 @@ public function configureOptions(OptionsResolver $resolver)
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'empty_data' => $emptyData,
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'compound' => false,
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'false_values' => [null],
63+
'is_empty_callback' => static function ($modelData): bool {
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return false === $modelData;
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},
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]);
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$resolver->setAllowedTypes('false_values', 'array');

‎src/Symfony/Component/Form/Extension/Core/Type/FormType.php

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@@ -15,6 +15,7 @@
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use Symfony\Component\Form\Extension\Core\DataMapper\PropertyPathMapper;
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use Symfony\Component\Form\Extension\Core\EventListener\TrimListener;
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use Symfony\Component\Form\FormBuilderInterface;
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use Symfony\Component\Form\FormConfigBuilderInterface;
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use Symfony\Component\Form\FormInterface;
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use Symfony\Component\Form\FormView;
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use Symfony\Component\OptionsResolver\Options;
@@ -58,6 +59,14 @@ public function buildForm(FormBuilderInterface $builder, array $options)
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if ($options['trim']) {
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$builder->addEventSubscriber(new TrimListener());
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}
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if (!method_exists($builder, 'setIsEmptyCallback')) {
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@trigger_error(sprintf('Not implementing the "%s::setIsEmptyCallback()" method in "%s" is deprecated since Symfony 5.1.', FormConfigBuilderInterface::class, \get_class($builder)), E_USER_DEPRECATED);
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return;
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}
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$builder->setIsEmptyCallback($options['is_empty_callback']);
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}
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/**
@@ -190,13 +199,15 @@ public function configureOptions(OptionsResolver $resolver)
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'help_attr' => [],
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'help_html' => false,
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'help_translation_parameters' => [],
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'is_empty_callback' => null,
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]);
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$resolver->setAllowedTypes('label_attr', 'array');
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$resolver->setAllowedTypes('upload_max_size_message', ['callable']);
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$resolver->setAllowedTypes('help', ['string', 'null']);
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$resolver->setAllowedTypes('help_attr', 'array');
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$resolver->setAllowedTypes('help_html', 'bool');
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$resolver->setAllowedTypes('is_empty_callback', ['null', 'callable']);
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}
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/**

‎src/Symfony/Component/Form/Form.php

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@@ -726,6 +726,18 @@ public function isEmpty()
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}
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}
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729+
if (!method_exists($this->config, 'getIsEmptyCallback')) {
730+
@trigger_error(sprintf('Not implementing the "%s::getIsEmptyCallback()" method in "%s" is deprecated since Symfony 5.1.', FormConfigInterface::class, \get_class($this->config)), E_USER_DEPRECATED);
731+
732+
$isEmptyCallback = null;
733+
} else {
734+
$isEmptyCallback = $this->config->getIsEmptyCallback();
735+
}
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737+
if (null !== $isEmptyCallback) {
738+
return $isEmptyCallback($this->modelData);
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}
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729741
return FormUtil::isEmpty($this->modelData) ||
730742
// arrays, countables
731743
((\is_array($this->modelData) || $this->modelData instanceof \Countable) && 0 === \count($this->modelData)) ||

‎src/Symfony/Component/Form/FormConfigBuilder.php

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@@ -16,6 +16,7 @@
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use Symfony\Component\EventDispatcher\ImmutableEventDispatcher;
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use Symfony\Component\Form\Exception\BadMethodCallException;
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use Symfony\Component\Form\Exception\InvalidArgumentException;
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use Symfony\Component\Form\Util\FormUtil;
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use Symfony\Component\PropertyAccess\PropertyPath;
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use Symfony\Component\PropertyAccess\PropertyPathInterface;
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@@ -102,6 +103,7 @@ class FormConfigBuilder implements FormConfigBuilderInterface
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103104
private $autoInitialize = false;
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private $options;
106+
private $isEmptyCallback;
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106108
/**
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* Creates an empty form configuration.
@@ -461,6 +463,11 @@ public function getOption(string $name, $default = null)
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return \array_key_exists($name, $this->options) ? $this->options[$name] : $default;
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}
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466+
public function getIsEmptyCallback(): ?callable
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{
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return $this->isEmptyCallback;
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}
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/**
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* {@inheritdoc}
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*/
@@ -761,6 +768,16 @@ public function getFormConfig()
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return $config;
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}
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/**
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* {@inheritdoc}
773+
*/
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public function setIsEmptyCallback(?callable $isEmptyCallback)
775+
{
776+
$this->isEmptyCallback = $isEmptyCallback;
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return $this;
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}
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/**
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* Validates whether the given variable is a valid form name.
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*

‎src/Symfony/Component/Form/FormConfigBuilderInterface.php

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/**
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* @author Bernhard Schussek <[email protected]>
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*
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* @method $this setIsEmptyCallback(callable|null $isEmptyCallback) Sets the callback that will be called to determine if the model data of the form is empty or not - not implementing it is deprecated since Symfony 5.1
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*/
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interface FormConfigBuilderInterface extends FormConfigInterface
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{

‎src/Symfony/Component/Form/FormConfigInterface.php

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* The configuration of a {@link Form} object.
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*
2020
* @author Bernhard Schussek <[email protected]>
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*
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* @method callable|null getIsEmptyCallback() Returns a callable that takes the model data as argument and that returns if it is empty or not - not implementing it is deprecated since Symfony 5.1
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*/
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interface FormConfigInterface
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{

‎src/Symfony/Component/Form/Tests/Extension/Core/Type/ChoiceTypeTest.php

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'Multiple expanded' => [true, true],
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];
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}
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/**
2054+
* @dataProvider expandedIsEmptyWhenNoRealChoiceIsSelectedProvider
2055+
*/
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public function testExpandedIsEmptyWhenNoRealChoiceIsSelected(bool $expected, $submittedData, bool $multiple, bool $required, $placeholder)
2057+
{
2058+
$options = [
2059+
'expanded' => true,
2060+
'choices' => [
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'foo' => 'bar',
2062+
],
2063+
'multiple' => $multiple,
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'required' => $required,
2065+
];
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if (!$multiple) {
2068+
$options['placeholder'] = $placeholder;
2069+
}
2070+
2071+
$form = $this->factory->create(static::TESTED_TYPE, null, $options);
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2073+
$form->submit($submittedData);
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2075+
$this->assertSame($expected, $form->isEmpty());
2076+
}
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2078+
public function expandedIsEmptyWhenNoRealChoiceIsSelectedProvider()
2079+
{
2080+
// Some invalid cases are voluntarily not tested:
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// - multiple with placeholder
2082+
// - required with placeholder
2083+
return [
2084+
'Nothing submitted / single / not required / without a placeholder -> should be empty' => [true, null, false, false, null],
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'Nothing submitted / single / not required / with a placeholder -> should not be empty' => [false, null, false, false, 'ccc'], // It falls back on the placeholder
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'Nothing submitted / single / required / without a placeholder -> should be empty' => [true, null, false, true, null],
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'Nothing submitted / single / required / with a placeholder -> should be empty' => [true, null, false, true, 'ccc'],
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'Nothing submitted / multiple / not required / without a placeholder -> should be empty' => [true, null, true, false, null],
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'Nothing submitted / multiple / required / without a placeholder -> should be empty' => [true, null, true, true, null],
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'Placeholder submitted / single / not required / with a placeholder -> should not be empty' => [false, '', false, false, 'ccc'], // The placeholder is a selected value
2091+
];
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}
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}

‎src/Symfony/Component/Form/Tests/Fixtures/Descriptor/resolved_form_type_1.json

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"help_html",
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"help_translation_parameters",
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"inherit_data",
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"is_empty_callback",
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"label",
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"label_attr",
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"label_format",

‎src/Symfony/Component/Form/Tests/Fixtures/Descriptor/resolved_form_type_1.txt

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help_html
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help_translation_parameters
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inherit_data
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is_empty_callback
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label
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label_attr
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label_format

‎src/Symfony/Component/Form/Tests/Fixtures/Descriptor/resolved_form_type_2.json

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"help_html",
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"help_translation_parameters",
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"inherit_data",
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"is_empty_callback",
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"label",
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"label_attr",
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"label_format",

‎src/Symfony/Component/Form/Tests/Fixtures/Descriptor/resolved_form_type_2.txt

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help_html
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help_translation_parameters
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inherit_data
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is_empty_callback
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label
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label_attr
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label_format

‎src/Symfony/Component/Form/Tests/SimpleFormTest.php

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@@ -1097,6 +1097,21 @@ public function testCannotCallGetViewDataInPreSetDataListener()
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$form->setData('foo');
10981098
}
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1100+
public function testIsEmptyCallback()
1101+
{
1102+
$config = new FormConfigBuilder('foo', null, $this->dispatcher);
1103+
1104+
$config->setIsEmptyCallback(function ($modelData): bool { return 'ccc' === $modelData; });
1105+
$form = new Form($config);
1106+
$form->setData('ccc');
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$this->assertTrue($form->isEmpty());
1108+
1109+
$config->setIsEmptyCallback(function (): bool { return false; });
1110+
$form = new Form($config);
1111+
$form->setData(null);
1112+
$this->assertFalse($form->isEmpty());
1113+
}
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11001115
protected function createForm(): FormInterface
11011116
{
11021117
return $this->getBuilder()->getForm();

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