Fixed more Twig class namespaces

Author: javiereguiluz

components/form.rst

@@ -199,7 +199,7 @@ to bootstrap or access Twig and add the :class:`Symfony\\Bridge\\Twig\\Extension
         $vendorTwigBridgeDirectory.'/Resources/views/Form',
     )));
     $formEngine = new TwigRendererEngine(array($defaultFormTheme), $twig);
-    $twig->addRuntimeLoader(new \Twig_FactoryRuntimeLoader(array(
+    $twig->addRuntimeLoader(new FactoryRuntimeLoader(array(
         FormRenderer::class => function () use ($formEngine, $csrfManager) {
             return new FormRenderer($formEngine, $csrfManager);
         },
@@ -216,7 +216,7 @@ to bootstrap or access Twig and add the :class:`Symfony\\Bridge\\Twig\\Extension
         ->getFormFactory();
 
 .. versionadded:: 1.30
-    The ``Twig_FactoryRuntimeLoader`` was introduced in Twig 1.30.
+    The ``Twig\\RuntimeLoader\\FactoryRuntimeLoader`` was introduced in Twig 1.30.
 
 The exact details of your `Twig Configuration`_ will vary, but the goal is
 always to add the :class:`Symfony\\Bridge\\Twig\\Extension\\FormExtension`

controller/service.rst

@@ -101,12 +101,13 @@ service and use it directly::
     namespace AppBundle\Controller;
 
     use Symfony\Component\HttpFoundation\Response;
+    use Twig\Environment;
 
     class HelloController
     {
         private $twig;
 
-        public function __construct(\Twig_Environment $twig)
+        public function __construct(Environment $twig)
         {
             $this->twig = $twig;
         }

service_container.rst

@@ -71,7 +71,7 @@ security.authorization_checker  ``Symfony\Component\Security\Core\Authorization\
 security.password_encoder       ``Symfony\Component\Security\Core\Encoder\UserPasswordEncoder``
 session                         ``Symfony\Component\HttpFoundation\Session\Session``
 translator                      ``Symfony\Component\Translation\DataCollectorTranslator``
-twig                            ``Twig_Environment``
+twig                            ``Twig\Environment``
 validator                       ``Symfony\Component\Validator\Validator\ValidatorInterface``
 =============================== =======================================================================
 
@@ -837,7 +837,7 @@ But, with ``autoconfigure: true``, you don't need the tag. In fact, if you're us
 the :ref:`Symfony Standard Edition services.yml config <service-container-services-load-example>`,
 you don't need to do *anything*: the service will be automatically loaded. Then,
 ``autoconfigure`` will add the ``twig.extension`` tag *for* you, because your class
-implements ``Twig_ExtensionInterface``. And thanks to ``autowire``, you can even add
+implements ``Twig\\Extension\\ExtensionInterface``. And thanks to ``autowire``, you can even add
 constructor arguments without any configuration.
 
 Of course, you can still :ref:`manually configure the service <services-manually-wire-args>`

service_container/tags.rst

@@ -60,8 +60,8 @@ Autoconfiguring Tags
 
 Starting in Symfony 3.3, if you enable :ref:`autoconfigure <services-autoconfigure>`,
 then some tags are automatically applied for you. That's true for the ``twig.extension``
-tag: the container sees that your class extends ``Twig_Extension`` (or more accurately,
-that it implements ``Twig_ExtensionInterface``) and adds the tag for you.
+tag: the container sees that your class extends ``AbstractExtension`` (or more accurately,
+that it implements ``ExtensionInterface``) and adds the tag for you.
 
 .. tip::
 

templating/twig_extension.rst

@@ -21,7 +21,7 @@ money:
     {# pass in the 3 optional arguments #}
     {{ product.price|price(2, ',', '.') }}
 
-Create a class that extends ``\Twig_Extension`` and fill in the logic::
+Create a class that extends ``AbstractExtension`` and fill in the logic::
 
     // src/AppBundle/Twig/AppExtension.php
     namespace AppBundle\Twig;
@@ -94,14 +94,16 @@ callable defined in ``getFilters()``::
     namespace AppBundle\Twig;
 
     use AppBundle\Twig\AppRuntime;
+    use Twig\Extension\AbstractExtension;
+    use Twig\TwigFilter;
 
-    class AppExtension extends \Twig_Extension
+    class AppExtension extends AbstractExtension
     {
         public function getFilters()
         {
             return array(
                 // the logic of this filter is now implemented in a different class
-                new \Twig_SimpleFilter('price', array(AppRuntime::class, 'priceFilter')),
+                new TwigFilter('price', array(AppRuntime::class, 'priceFilter')),
             );
         }
     }