template_preprocess_html(&$variables)
Prepares variables for HTML document templates.
Default template: html.html.twig.
Parameters
array $variables: An associative array containing:
- page: A render element representing the page.
File
- core/includes/theme.inc, line 1254
- The theme system, which controls the output of Drupal.
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | function template_preprocess_html(&$variables) { $variables['page'] = $variables['html']['page']; unset($variables['html']['page']); $variables['page_top'] = NULL; if (isset($variables['html']['page_top'])) { $variables['page_top'] = $variables['html']['page_top']; unset($variables['html']['page_top']); } $variables['page_bottom'] = NULL; if (isset($variables['html']['page_bottom'])) { $variables['page_bottom'] = $variables['html']['page_bottom']; unset($variables['html']['page_bottom']); } $variables['html_attributes'] = new Attribute(); // <html> element attributes. $language_interface = \Drupal::languageManager()->getCurrentLanguage(); $variables['html_attributes']['lang'] = $language_interface->getId(); $variables['html_attributes']['dir'] = $language_interface->getDirection(); if (isset($variables['db_is_active']) && !$variables['db_is_active']) { $variables['db_offline'] = TRUE; } // Add a variable for the root path. This can be used to create a class and // theme the page depending on the current path (e.g. node, admin, user) as // well as more specific data like path-frontpage. $is_front_page = \Drupal::service('path.matcher')->isFrontPage(); if ($is_front_page) { $variables['root_path'] = FALSE; } else { $system_path = \Drupal::service('path.current')->getPath(); $variables['root_path'] = explode('/', $system_path) [1]; } $site_config = \Drupal::config('system.site'); // Construct page title. if (isset($variables['page']['#title']) && is_array($variables['page']['#title'])) { // Do an early render if the title is a render array. $variables['page']['#title'] = (string) \Drupal::service('renderer')->render($variables['page']['#title']); } if (!empty($variables['page']['#title'])) { $head_title = array( // Marking the title as safe since it has had the tags stripped. 'title' => Markup::create(trim(strip_tags($variables['page']['#title']))), 'name' => $site_config->get('name'), ); } // @todo Remove once views is not bypassing the view subscriber anymore. elseif ($is_front_page) { $head_title = array( 'title' => t('Home'), 'name' => $site_config->get('name'), ); } else { $head_title = ['name' => $site_config->get('name')]; if ($site_config->get('slogan')) { $head_title['slogan'] = strip_tags($site_config->get('slogan')); } } $variables['head_title'] = $head_title; // @deprecated in Drupal 8.0.0, will be removed before Drupal 9.0.0. $variables['head_title_array'] = $head_title; // Create placeholder strings for these keys. // @see \Drupal\Core\Render\HtmlResponseSubscriber $types = [ 'styles' => 'css', 'scripts' => 'js', 'scripts_bottom' => 'js-bottom', 'head' => 'head', ]; $variables['placeholder_token'] = Crypt::randomBytesBase64(55); foreach ($types as $type => $placeholder_name) { $placeholder = '<' . $placeholder_name . '-placeholder token="' . $variables['placeholder_token'] . '">'; $variables['#attached']['html_response_attachment_placeholders'][$type] = $placeholder; }} |
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