SimplifyFormRenderingRector

Symplify form rendering by not calling ->createView() on render function

 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;

 class ReplaceFormCreateViewFunctionCall extends AbstractController
 {
     public function form(): Response
     {
         return $this->render('form.html.twig', [
-            'form' => $form->createView(),
+            'form' => $form,
         ]);
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\Symfony\Symfony62\Rector\MethodCall\SimplifyFormRenderingRector;

return RectorConfig::configure()
    ->withRules([
        SimplifyFormRenderingRector::class,
    ]);
SETS:  symfony/* 6.2