'inline_template', // Add a noindex meta tag to make sure this response will not be indexed. '#template' => << {{ content }} HTMX_RESPONSE, '#context' => [ 'title' => $main_content['#title'] ?? $this->titleResolver->getTitle($request, $route_match->getRouteObject()), 'content' => [ 'messages' => ['#type' => 'status_messages'], 'main_content' => $main_content, ], 'placeholder_token' => $token, ], ]; // Create placeholder strings for these keys. // @see \Drupal\Core\Render\HtmlResponseSubscriber $types = [ 'styles' => 'css', 'scripts' => 'js', 'scripts_bottom' => 'js-bottom', ]; foreach ($types as $type => $placeholder_name) { $placeholder = '<' . $placeholder_name . '-placeholder token="' . $token . '">'; $html['#attached']['html_response_attachment_placeholders'][$type] = $placeholder; } // Render, but don't replace placeholders yet, because that happens later in // the render pipeline. To not replace placeholders yet, we use // RendererInterface::render() instead of RendererInterface::renderRoot(). // @see \Drupal\Core\Render\HtmlResponseAttachmentsProcessor. $render_context = new RenderContext(); $this->renderer->executeInRenderContext($render_context, function () use (&$html) { // RendererInterface::render() renders the $html render array and updates // it in place. We don't care about the return value (which is just // $html['#markup']), but about the resulting render array. // @todo Simplify this when https://www.drupal.org/node/2495001 lands. $this->renderer->render($html); }); // RendererInterface::render() always causes bubbleable metadata to be // stored in the render context, no need to check it conditionally. $bubbleable_metadata = $render_context->pop(); $bubbleable_metadata->applyTo($html); $content = $this->renderCache->getCacheableRenderArray($html); // Also associate the required cache contexts. // (Because we use ::render() above and not ::renderRoot(), we manually must // ensure the HTML response varies by the required cache contexts.) $content['#cache']['contexts'] = Cache::mergeContexts($content['#cache']['contexts'], $this->rendererConfig['required_cache_contexts']); // Also associate the "rendered" cache tag. This allows us to invalidate the // entire render cache, regardless of the cache bin. $content['#cache']['tags'][] = 'rendered'; $response = new HtmlResponse($content, 200, [ 'Content-Type' => 'text/html; charset=utf-8', // Make sure bots do not show this response in search results. 'X-Robots-Tag' => 'noindex', ]); return $response; } }