function elf_help in External Links Filter 8

Implements hook_help().

File

./elf.module, line 13

Hook implementations for Elf module.

Code

function elf_help($route_name, \Drupal\Core\Routing\RouteMatchInterface $route_match) {
  switch ($route_name) {
    case 'help.page.elf':
      $text = file_get_contents(__DIR__ . '/README.md');
      if (!\Drupal::moduleHandler()
        ->moduleExists('markdown')) {
        return '<pre>' . Html::escape($text) . '</pre>';
      }
      else {

        // Use the Markdown filter to render the README.
        $filter_manager = \Drupal::service('plugin.manager.filter');
        $settings = \Drupal::configFactory()
          ->get('markdown.settings')
          ->getRawData();
        $config = [
          'settings' => $settings,
        ];
        $filter = $filter_manager
          ->createInstance('markdown', $config);
        return $filter
          ->process($text, 'en');
      }
  }
  return NULL;
}