From d479adf0735d240b52ec8ce2cde7af17e465906c Mon Sep 17 00:00:00 2001
From: Jules Pietri <heah@heahprod.com>
Date: Wed, 17 Feb 2016 04:19:28 +0100
Subject: [PATCH] [Form] fix `empty_data` option in expanded `ChoiceType`

---
 .../Form/Extension/Core/Type/ChoiceType.php   |  9 +++
 .../Extension/Core/Type/ChoiceTypeTest.php    | 60 +++++++++++++++++++
 2 files changed, 69 insertions(+)

diff --git a/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php b/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php
index a61317de8522..9a67a049b180 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php
@@ -33,6 +33,7 @@
 use Symfony\Component\Form\Extension\Core\EventListener\MergeCollectionListener;
 use Symfony\Component\Form\Extension\Core\DataTransformer\ChoiceToValueTransformer;
 use Symfony\Component\Form\Extension\Core\DataTransformer\ChoicesToValuesTransformer;
+use Symfony\Component\Form\Util\FormUtil;
 use Symfony\Component\OptionsResolver\Options;
 use Symfony\Component\OptionsResolver\OptionsResolver;
 
@@ -90,6 +91,14 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                 $form = $event->getForm();
                 $data = $event->getData();
 
+                if (null === $data) {
+                    $emptyData = $form->getConfig()->getEmptyData();
+
+                    if (false === FormUtil::isEmpty($emptyData) && array() !== $emptyData) {
+                        $data = is_callable($emptyData) ? call_user_func($emptyData, $form, $data) : $emptyData;
+                    }
+                }
+
                 // Convert the submitted data to a string, if scalar, before
                 // casting it to an array
                 if (!is_array($data)) {
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/ChoiceTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/ChoiceTypeTest.php
index a00fcacdb70b..b7bea7e5c806 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/ChoiceTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/ChoiceTypeTest.php
@@ -672,6 +672,66 @@ public function testSubmitSingleNonExpandedObjectChoices()
         $this->assertTrue($form->isSynchronized());
     }
 
+    public function testSubmitSingleChoiceWithEmptyData()
+    {
+        $form = $this->factory->create('choice', null, array(
+            'multiple' => false,
+            'expanded' => false,
+            'choices' => array('test'),
+            'choices_as_values' => true,
+            'empty_data' => 'test',
+        ));
+
+        $form->submit(null);
+
+        $this->assertSame('test', $form->getData());
+    }
+
+    public function testSubmitMultipleChoiceWithEmptyData()
+    {
+        $form = $this->factory->create('choice', null, array(
+            'multiple' => true,
+            'expanded' => false,
+            'choices' => array('test'),
+            'choices_as_values' => true,
+            'empty_data' => array('test'),
+        ));
+
+        $form->submit(null);
+
+        $this->assertSame(array('test'), $form->getData());
+    }
+
+    public function testSubmitSingleChoiceExpandedWithEmptyData()
+    {
+        $form = $this->factory->create('choice', null, array(
+            'multiple' => false,
+            'expanded' => true,
+            'choices' => array('test'),
+            'choices_as_values' => true,
+            'empty_data' => 'test',
+        ));
+
+        $form->submit(null);
+
+        $this->assertSame('test', $form->getData());
+    }
+
+    public function testSubmitMultipleChoiceExpandedWithEmptyData()
+    {
+        $form = $this->factory->create('choice', null, array(
+            'multiple' => true,
+            'expanded' => true,
+            'choices' => array('test'),
+            'choices_as_values' => true,
+            'empty_data' => array('test'),
+        ));
+
+        $form->submit(null);
+
+        $this->assertSame(array('test'), $form->getData());
+    }
+
     /**
      * @group legacy
      */