public function HtmlRenderer::invokePageAttachmentHooks in Drupal 8

Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php \Drupal\Core\Render\MainContent\HtmlRenderer::invokePageAttachmentHooks()

Invokes the page attachment hooks.

@internal

Parameters

array &$page: A #type 'page' render array, for which the page attachment hooks will be invoked and to which the results will be added.

Throws

\LogicException

See also

hook_page_attachments()

hook_page_attachments_alter()

1 call to HtmlRenderer::invokePageAttachmentHooks()

HtmlRenderer::prepare in core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php

Prepares the HTML body: wraps the main content in #type 'page'.

File

core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php, line 292

Class

HtmlRenderer

Default main content renderer for HTML requests.

Namespace

Drupal\Core\Render\MainContent

Code

public function invokePageAttachmentHooks(array &$page) {

  // Modules can add attachments.
  $attachments = [];
  foreach ($this->moduleHandler
    ->getImplementations('page_attachments') as $module) {
    $function = $module . '_page_attachments';
    $function($attachments);
  }
  if (array_diff(array_keys($attachments), [
    '#attached',
    '#cache',
  ]) !== []) {
    throw new \LogicException('Only #attached and #cache may be set in hook_page_attachments().');
  }

  // Modules and themes can alter page attachments.
  $this->moduleHandler
    ->alter('page_attachments', $attachments);
  \Drupal::theme()
    ->alter('page_attachments', $attachments);
  if (array_diff(array_keys($attachments), [
    '#attached',
    '#cache',
  ]) !== []) {
    throw new \LogicException('Only #attached and #cache may be set in hook_page_attachments_alter().');
  }

  // Merge the attachments onto the $page render array.
  $page = $this->renderer
    ->mergeBubbleableMetadata($page, $attachments);
}