function BigPipe::renderPlaceholder
Renders a placeholder, and just that placeholder.
BigPipe renders placeholders independently of the rest of the content, so it needs to be able to render placeholders by themselves.
Parameters
string $placeholder: The placeholder to render.
array $placeholder_render_array: The render array associated with that placeholder.
Return value
array The render array representing the rendered placeholder.
See also
\Drupal\Core\Render\RendererInterface::renderPlaceholder()
2 calls to BigPipe::renderPlaceholder()
- BigPipe::sendNoJsPlaceholders in core/
modules/ big_pipe/ src/ Render/ BigPipe.php  - Sends no-JS BigPipe placeholders' replacements as embedded HTML responses.
 - BigPipe::sendPlaceholders in core/
modules/ big_pipe/ src/ Render/ BigPipe.php  - Sends BigPipe placeholders' replacements as embedded AJAX responses.
 
File
- 
              core/
modules/ big_pipe/ src/ Render/ BigPipe.php, line 721  
Class
- BigPipe
 - Service for sending an HTML response in chunks (to get faster page loads).
 
Namespace
Drupal\big_pipe\RenderCode
protected function renderPlaceholder($placeholder, array $placeholder_render_array) {
  $elements = [
    '#markup' => $placeholder,
    '#attached' => [
      'placeholders' => [
        $placeholder => $placeholder_render_array,
      ],
    ],
  ];
  return $this->renderer
    ->renderPlaceholder($placeholder, $elements);
}
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