bug symfony#19061 [FORM] fix post_max_size_message translation (alt. 2) (David Badura)

This PR was merged into the 2.7 branch.

Discussion
----------

[FORM] fix post_max_size_message translation (alt. 2)

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | symfony#15479, symfony#18543
| License       | MIT
| Doc PR        | -

Commits
-------

9d8a5e5 fix post_max_size_message translation

Author: fabpot

src/Symfony/Bundle/FrameworkBundle/Resources/config/form.xml

@@ -189,5 +189,10 @@
         <service id="form.type_extension.submit.validator" class="Symfony\Component\Form\Extension\Validator\Type\SubmitTypeValidatorExtension">
             <tag name="form.type_extension" alias="submit" />
         </service>
+        <service id="form.type_extension.upload.validator" class="Symfony\Component\Form\Extension\Validator\Type\UploadValidatorExtension">
+            <tag name="form.type_extension" alias="form" />
+            <argument type="service" id="translator"/>
+            <argument type="string">%validator.translation_domain%</argument>
+        </service>
     </services>
 </container>

src/Symfony/Component/Form/Extension/Validator/Type/UploadValidatorExtension.php

@@ -0,0 +1,58 @@
+<?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\Validator\Type;
+
+use Symfony\Component\Form\AbstractTypeExtension;
+use Symfony\Component\OptionsResolver\Options;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+use Symfony\Component\Translation\TranslatorInterface;
+
+/**
+ * @author Abdellatif Ait boudad <a.aitboudad@gmail.com>
+ * @author David Badura <d.a.badura@gmail.com>
+ */
+class UploadValidatorExtension extends AbstractTypeExtension
+{
+    private $translator;
+    private $translationDomain;
+
+    /**
+     * @param TranslatorInterface $translator        The translator for translating error messages
+     * @param null|string         $translationDomain The translation domain for translating
+     */
+    public function __construct(TranslatorInterface $translator, $translationDomain = null)
+    {
+        $this->translator = $translator;
+        $this->translationDomain = $translationDomain;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function configureOptions(OptionsResolver $resolver)
+    {
+        $translator = $this->translator;
+        $translationDomain = $this->translationDomain;
+
+        $resolver->setNormalizer('post_max_size_message', function (Options $options, $errorMessage) use ($translator, $translationDomain) {
+            return $translator->trans($errorMessage, array(), $translationDomain);
+        });
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getExtendedType()
+    {
+        return 'form';
+    }
+}

src/Symfony/Component/Form/Tests/Extension/Validator/Type/UploadValidatorExtensionTest.php

@@ -0,0 +1,38 @@
+<?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\Tests\Extension\Validator\Type;
+
+use Symfony\Component\Form\Extension\Validator\Type\UploadValidatorExtension;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+
+class UploadValidatorExtensionTest extends TypeTestCase
+{
+    public function testPostMaxSizeTranslation()
+    {
+        $translator = $this->getMock('Symfony\Component\Translation\TranslatorInterface');
+
+        $translator->expects($this->any())
+            ->method('trans')
+            ->with($this->equalTo('old max {{ max }}!'))
+            ->willReturn('translated max {{ max }}!');
+
+        $extension = new UploadValidatorExtension($translator);
+
+        $resolver = new OptionsResolver();
+        $resolver->setDefault('post_max_size_message', 'old max {{ max }}!');
+
+        $extension->configureOptions($resolver);
+        $options = $resolver->resolve();
+
+        $this->assertEquals('translated max {{ max }}!', $options['post_max_size_message']);
+    }
+}