Generate a different controller when Twig is not installed

src/Command/MakeControllerCommand.php

@@ -62,8 +62,10 @@ protected function getParameters(): array
 
     protected function getFiles(array $params): array
     {
+        $skeletonFile = $this->isTwigInstalled() ? 'ControllerWithTwig.php.txt' : 'Controller.php.txt';
+
         return [
-            __DIR__.'/../Resources/skeleton/controller/Controller.php.txt' => 'src/Controller/'.$params['controller_class_name'].'.php'
+            __DIR__.'/../Resources/skeleton/controller/'.$skeletonFile => 'src/Controller/'.$params['controller_class_name'].'.php'
         ];
     }
 
@@ -89,4 +91,9 @@ protected function configureDependencies(DependencyBuilder $dependencies)
             'annotations'
         );
     }
+
+    private function isTwigInstalled()
+    {
+        return class_exists(Symfony\Bundle\TwigBundle\TwigBundle::class);
+    }
 }

src/Resources/skeleton/controller/Controller.php.txt

@@ -13,7 +13,6 @@ class {{ controller_class_name }} extends Controller
      */
     public function index()
     {
-        // replace this line with your own code!
-        return $this->render('@Maker/demoPage.html.twig', [ 'path' => str_replace($this->getParameter('kernel.project_dir').'/', '', __FILE__) ]);
+        return new Response('Hello World');
     }
 }

src/Resources/skeleton/controller/ControllerWithTwig.php.txt

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Controller;
+
+use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
+use Symfony\Bundle\FrameworkBundle\Controller\Controller;
+use Symfony\Component\HttpFoundation\Response;
+
+class {{ controller_class_name }} extends Controller
+{
+    /**
+     * @Route("{{ route_path }}", name="{{ route_name }}")
+     */
+    public function index()
+    {
+        // replace this line with your own code!
+        return $this->render('@Maker/demoPage.html.twig', [ 'path' => str_replace($this->getParameter('kernel.project_dir').'/', '', __FILE__) ]);
+    }
+}