[FrameworkBundle], [TwigBundle] added support for form error message pluralization

src/Symfony/Bridge/Twig/Resources/views/Form/form_div_layout.html.twig

@@ -250,7 +250,13 @@
     {% if errors|length > 0 %}
     <ul>
         {% for error in errors %}
-            <li>{{ error.messageTemplate|trans(error.messageParameters, 'validators') }}</li>
+            <li>{{
+                error.messagePluralization is null
+                ?
+                    error.messageTemplate|trans(error.messageParameters, 'validators')
+                :
+                    error.messageTemplate|transchoice(error.messagePluralization, error.messageParameters, 'validators')
+            }}</li>
         {% endfor %}
     </ul>
     {% endif %}

src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/field_errors.html.php

@@ -1,11 +1,21 @@
 <?php if ($errors): ?>
     <ul>
         <?php foreach ($errors as $error): ?>
-            <li><?php echo $view['translator']->trans(
-                $error->getMessageTemplate(),
-                $error->getMessageParameters(),
-                'validators'
-            ) ?></li>
+            <li><?php
+                if (null === $error->getMessagePluralization()) {
+                    echo $view['translator']->trans(
+                        $error->getMessageTemplate(),
+                        $error->getMessageParameters(),
+                        'validators'
+                    );
+                } else {
+                    echo $view['translator']->transChoice(
+                        $error->getMessageTemplate(),
+                        $error->getMessagePluralization(),
+                        $error->getMessageParameters(),
+                        'validators'
+                    );
+                }?></li>
         <?php endforeach; ?>
     </ul>
 <?php endif ?>