symfony
diff --git a/‎src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md
+1 b/‎src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md
+1
diff --git a/‎src/Symfony/Bundle/FrameworkBundle/Controller/AbstractController.php
+59-24 b/‎src/Symfony/Bundle/FrameworkBundle/Controller/AbstractController.php
+59-24
@@ -4,6 +4,7 @@ CHANGELOG
 6.4
 ---
 
+ * Add `AbstractController::renderBlock()` and `renderBlockView()`
  * Add native return type to `Translator` and to `Application::reset()`
  * Deprecate the integration of Doctrine annotations, either uninstall the `doctrine/annotations` package or disable the integration by setting `framework.annotations` to `false`
  * Enable `json_decode_detailed_errors` context for Serializer by default if `kernel.debug` is true and the `seld/jsonlint` package is installed
 
@@ -229,17 +229,17 @@ protected function denyAccessUnlessGranted(mixed $attribute, mixed $subject = nu
      */
     protected function renderView(string $view, array $parameters = []): string
     {
-        if (!$this->container->has('twig')) {
-            throw new \LogicException('You cannot use the "renderView" method if the Twig Bundle is not available. Try running "composer require symfony/twig-bundle".');
-        }
-
-        foreach ($parameters as $k => $v) {
-            if ($v instanceof FormInterface) {
-                $parameters[$k] = $v->createView();
-            }
-        }
+        return $this->doRenderView($view, null, $parameters, __FUNCTION__);
+    }
 
-        return $this->container->get('twig')->render($view, $parameters);
+    /**
+     * Returns a rendered block from a view.
+     *
+     * Forms found in parameters are auto-cast to form views.
+     */
+    protected function renderBlockView(string $view, string $block, array $parameters = []): string
+    {
+        return $this->doRenderView($view, $block, $parameters, __FUNCTION__);
     }
 
     /**
@@ -250,21 +250,18 @@ protected function renderView(string $view, array $parameters = []): string
      */
     protected function render(string $view, array $parameters = [], Response $response = null): Response
     {
-        $content = $this->renderView($view, $parameters);
-        $response ??= new Response();
-
-        if (200 === $response->getStatusCode()) {
-            foreach ($parameters as $v) {
-                if ($v instanceof FormInterface && $v->isSubmitted() && !$v->isValid()) {
-                    $response->setStatusCode(422);
-                    break;
-                }
-            }
-        }
-
-        $response->setContent($content);
+        return $this->doRender($view, null, $parameters, $response, __FUNCTION__);
+    }
 
-        return $response;
+    /**
+     * Renders a block in a view.
+     *
+     * If an invalid form is found in the list of parameters, a 422 status code is returned.
+     * Forms found in parameters are auto-cast to form views.
+     */
+    protected function renderBlock(string $view, string $block, arr
ED4F
ay $parameters = [], Response $response = null): Response
+    {
+        return $this->doRender($view, $block, $parameters, $response, __FUNCTION__);
     }
 
     /**
@@ -431,4 +428,42 @@ protected function sendEarlyHints(iterable $links = [], Response $response = nul
 
         return $response;
     }
+
+    private function doRenderView(string $view, ?string $block, array $parameters, string $method): string
+    {
+        if (!$this->container->has('twig')) {
+            throw new \LogicException(sprintf('You cannot use the "%s" method if the Twig Bundle is not available. Try running "composer require symfony/twig-bundle".', $method));
+        }
+
+        foreach ($parameters as $k => $v) {
+            if ($v instanceof FormInterface) {
+                $parameters[$k] = $v->createView();
+            }
+        }
+
+        if (null !== $block) {
+            return $this->container->get('twig')->load($view)->renderBlock($block, $parameters);
+        }
+
+        return $this->container->get('twig')->render($view, $parameters);
+    }
+
+    private function doRender(string $view, ?string $block, array $parameters, ?Response $response, string $method): Response
+    {
+        $content = $this->doRenderView($view, $block, $parameters, $method);
+        $response ??= new Response();
+
+        if (200 === $response->getStatusCode()) {
+            foreach ($parameters as $v) {
+                if ($v instanceof FormInterface && $v->isSubmitted() && !$v->isValid()) {
+                    $response->setStatusCode(422);
+                    break;
+                }
+            }
+        }
+
+        $response->setContent($content);
+
+        return $response;
+    }
 }