diff --git a/core/core.libraries.yml b/core/core.libraries.yml
index 56030cb..5bf8807 100644
--- a/core/core.libraries.yml
+++ b/core/core.libraries.yml
@@ -213,6 +213,12 @@ drupal.machine-name:
- core/drupal
- core/drupalSettings
+drupal.print:
+ version: VERSION
+ css:
+ theme:
+ misc/print.css: {}
+
drupal.progress:
version: VERSION
js:
diff --git a/core/modules/book/book.module b/core/modules/book/book.module
index c034ed6..643f855 100644
--- a/core/modules/book/book.module
+++ b/core/modules/book/book.module
@@ -478,6 +478,7 @@ function template_preprocess_book_export_html(&$variables) {
$variables['base_url'] = $base_url;
$variables['language'] = $language_interface;
$variables['language_rtl'] = ($language_interface->getDirection() == LanguageInterface::DIRECTION_RTL);
+ // @todo Populate HEAD somehow.
$variables['head'] = drupal_get_html_head();
// HTML element attributes.
diff --git a/core/modules/book/src/Controller/BookController.php b/core/modules/book/src/Controller/BookController.php
index 2f89937..9d97f52 100644
--- a/core/modules/book/src/Controller/BookController.php
+++ b/core/modules/book/src/Controller/BookController.php
@@ -154,7 +154,12 @@ public function bookExport($type, NodeInterface $node) {
}
$exported_book = $this->bookExport->{$method}($node);
- return new Response(drupal_render($exported_book));
+ // @todo Does not work!
+ drupal_process_attached($exported_book);
+ // @todo Probably renderRoot() is not needed here.
+ $content = \Drupal::service('renderer')->renderRoot($exported_book);
+ $responce = new Response($content);
+ return $responce;
}
}
diff --git a/core/modules/book/templates/book-export-html.html.twig b/core/modules/book/templates/book-export-html.html.twig
index 5fb2e97..1799b9b 100644
--- a/core/modules/book/templates/book-export-html.html.twig
+++ b/core/modules/book/templates/book-export-html.html.twig
@@ -24,7 +24,7 @@
{{ title }}
{{ page.head }}
-
+ {{ attach_library('core/drupal.print') }}
{#
diff --git a/core/themes/classy/templates/layout/book-export-html.html.twig b/core/themes/classy/templates/layout/book-export-html.html.twig
index ea33648..8904e3e 100644
--- a/core/themes/classy/templates/layout/book-export-html.html.twig
+++ b/core/themes/classy/templates/layout/book-export-html.html.twig
@@ -22,7 +22,7 @@
{{ title }}
{{ page.head }}
-
+ {{ attach_library('core/drupal.print') }}
{#