remove cache warmers when Twig cache is disabled

Author: xabbuh

src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/ExtensionPass.php

@@ -49,10 +49,15 @@ public function process(ContainerBuilder $container)
             $coreThemePath = \dirname(\dirname($reflClass->getFileName())).'/Resources/views/Form';
             $container->getDefinition('twig.loader.native_filesystem')->addMethodCall('addPath', array($coreThemePath));
 
-            $paths = $container->getDefinition('twig.cache_warmer')->getArgument(2);
+            $paths = $container->getDefinition('twig.template_iterator')->getArgument(2);
             $paths[$coreThemePath] = null;
-            $container->getDefinition('twig.cache_warmer')->replaceArgument(2, $paths);
             $container->getDefinition('twig.template_iterator')->replaceArgument(2, $paths);
+
+            if ($container->hasDefinition('twig.cache_warmer')) {
+                $paths = $container->getDefinition('twig.cache_warmer')->getArgument(2);
+                $paths[$coreThemePath] = null;
+                $container->getDefinition('twig.cache_warmer')->replaceArgument(2, $paths);
+            }
         }
 
         if ($container->has('fragment.handler')) {

src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php

@@ -132,6 +132,11 @@ public function load(array $configs, ContainerBuilder $container)
 
         $container->getDefinition('twig')->replaceArgument(1, $config);
 
+        if (false === $config['cache']) {
+            $container->removeDefinition('twig.cache_warmer');
+            $container->removeDefinition('twig.template_cache_warmer');
+        }
+
         $this->addClassesToCompile(array(
             'Twig_Environment',
             'Twig_Extension',