Same name and namespace in other branches

1. 11.x core/lib/Drupal/Core/Render/Renderer.php \Drupal\Core\Render\Renderer::renderInIsolation()

Renders final HTML in situations where no assets are needed.

Calls ::render() in such a way that placeholders are replaced.

Useful for instance when rendering the values of tokens or emails, which need a render array being turned into a string, but do not need any of the bubbleable metadata (the attached assets and cache tags).

Some of these are a relatively common use case and happen *within* a ::renderRoot() call, but that is generally highly problematic (and hence an exception is thrown when a ::renderRoot() call happens within another ::renderRoot() call). However, in this case, we only care about the output, not about the bubbling. Hence this uses a separate render context, to not affect the parent ::renderRoot() call.

(Can be executed within another render context: it runs in isolation.)

Parameters

array $elements: The structured array describing the data to be rendered.

Return value

\Drupal\Component\Render\MarkupInterface The rendered HTML.

Overrides RendererInterface::renderInIsolation

2 calls to Renderer::renderInIsolation()

Renderer::doRenderPlaceholder in core/lib/Drupal/Core/Render/Renderer.php

Renders a placeholder into markup.

Renderer::renderPlain in core/lib/Drupal/Core/Render/Renderer.php

File

core/lib/Drupal/Core/Render/Renderer.php, line 163

Class

Renderer

Turns a render array into an HTML string.

Namespace

Drupal\Core\Render

Code

public function renderInIsolation(&$elements) {
  return $this->executeInRenderContext(new RenderContext(), function () use (&$elements) {
    return $this->render($elements, TRUE);
  });
}

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