By tstoeckler on
Change record status: 
Published (View all published change records)
Project: 
Drupal core
Introduced in branch: 
8.x
Introduced in version: 
8.0-alpha5
Issue links: 
https://www.drupal.org/node/2102777
Description: 

theme_links() now supports passing a route name, and optionally route parameters, for the links instead of href.

Drupal 7:

$links = array(
  '#theme' => 'links',
  '#links' => array(
    'admin' => array(
      'title' => t('View admin pages'),
      'href' => 'admin',
    ),
    'add_article' => array(
      'title' => t('Add article'),
      'href' => 'node/add/article',
    ),
  ),
);

Drupal 8:

$links = array(
  '#theme' => 'links',
  '#links' => array(
    'admin' => array(
      'title' => t('View admin pages'),
      'url' => Url::fromRoute('system.admin'),
    ),
    'add_article' => array(
      'title' => t('Add article'),
      'url' => Url::fromRoute('node.add', array('node_type' => 'article')),
    ),
  ),
);

Using href is still supported and is still recommended for links to external URLs.

Impacts: 
Module developers
Themers