Merge branch '2.8' into 3.3

* 2.8:
  Fix collision between view properties and form fields

src/Symfony/Bridge/Twig/Extension/FormExtension.php

@@ -15,6 +15,7 @@ use Symfony\Bridge\Twig\TokenParser\FormThemeTokenParser;
 use Symfony\Bridge\Twig\Form\TwigRendererInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\Form\ChoiceList\View\ChoiceView;
+use Symfony\Component\Form\FormView;
 use Twig\Environment;
 use Twig\Extension\AbstractExtension;
 use Twig\Extension\InitRuntimeInterface;
@@ -105,6 +106,7 @@ class FormExtension extends AbstractExtension implements InitRuntimeInterface
     {
         return array(
             new TwigTest('selectedchoice', 'Symfony\Bridge\Twig\Extension\twig_is_selected_choice'),
+            new TwigTest('rootform', array($this, 'isRootForm')),
         );
     }
 
@@ -164,6 +166,11 @@ class FormExtension extends AbstractExtension implements InitRuntimeInterface
         unset($this->$name);
     }
 
+    public function isRootForm(FormView $formView)
+    {
+        return null === $formView->parent;
+    }
+
     /**
      * {@inheritdoc}
      */

src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_3_layout.html.twig

@@ -276,12 +276,12 @@
 
 {% block form_errors -%}
     {% if errors|length > 0 -%}
-    {% if form.parent %}<span class="help-block">{% else %}<div class="alert alert-danger">{% endif %}
+    {% if form is not rootform %}<span class="help-block">{% else %}<div class="alert alert-danger">{% endif %}
     <ul class="list-unstyled">
         {%- for error in errors -%}
             <li><span class="glyphicon glyphicon-exclamation-sign"></span> {{ error.message }}</li>
         {%- endfor -%}
     </ul>
-    {% if form.parent %}</span>{% else %}</div>{% endif %}
+    {% if form is not rootform %}</span>{% else %}</div>{% endif %}
     {%- endif %}
 {%- endblock form_errors %}

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

@@ -15,7 +15,7 @@
 
 {%- block form_widget_compound -%}
     <div {{ block('widget_container_attributes') }}>
-        {%- if form.parent is empty -%}
+        {%- if form is rootform -%}
             {{ form_errors(form) }}
         {%- endif -%}
         {{- block('form_rows') -}}
@@ -339,7 +339,7 @@
         {% endif %}
     {%- endfor %}
 
-    {% if not form.methodRendered and form.parent is null %}
+    {% if not form.methodRendered and form is rootform %}
         {%- do form.setMethodRendered() -%}
         {% set method = method|upper %}
         {%- if method in ["GET", "POST"] -%}

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

@@ -31,7 +31,7 @@
 
 {%- block form_widget_compound -%}
     <table {{ block('widget_container_attributes') }}>
-        {%- if form.parent is empty and errors|length > 0 -%}
+        {%- if form is rootform and errors|length > 0 -%}
         <tr>
             <td colspan="2">
                 {{- form_errors(form) -}}

src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionDivLayoutTest.php

@@ -146,6 +146,22 @@ class FormExtensionDivLayoutTest extends AbstractDivLayoutTest
         $this->assertSame('<form name="form" method="get" action="0">', $html);
     }
 
+    public function isRootFormProvider()
+    {
+        return array(
+            array(true, new FormView()),
+            array(false, new FormView(new FormView())),
+        );
+    }
+
+    /**
+     * @dataProvider isRootFormProvider
+     */
+    public function testIsRootForm($expected, FormView $formView)
+    {
+        $this->assertSame($expected, $this->extension->isRootForm($formView));
+    }
+
     protected function renderForm(FormView $view, array $vars = array())
     {
         return (string) $this->renderer->renderBlock($view, 'form', $vars);