8

In Drupal 7 this was possible.

$link = array(
  '#type'  => 'link',
  '#title' => t('My Title'),
  '#href'  => 'node/1',
);
drupal_render($link);

But I've tried this with Drupal 8, and it does not output anything.

$link = array(
  '#type' => 'link',
  '#title' => t('test'),
  '#url' => 'node/1',
);
drupal_render($link);

Is there a way I can render a link without having to call the Link plugin directly, or create my own theme function?

I'm theming a field group formatter, which must output a render array.
The use of drupal_render() is deprecated and should not be called directly; I'm using it here to make my example clearer.

  • Actually this should work. What means does not output anything ? Where do you print this rendered HTML ?? drupal_render() is deprecated. Call the RenderService directly: \Drupal::service('renderer')->render($elements, $is_recursive_call) Just to generate the link you could also use: Link::fromTextAndUrl($text, Url $url) See the link class. – rémy May 23 '16 at 7:53
  • What do you want to theme ?? – rémy May 23 '16 at 7:55
  • Thanks for the answer, but as stated I do not want to call the Link plugin directly. I've updated my question with a bit more background info to understand my scenario. – leon.nk May 23 '16 at 8:25
  • Have added info about what I'm theming to the question. – leon.nk May 23 '16 at 8:25
8

I think the problem with your Drupal 8 code is that '#url' needs a URL object.

External URL

'#url' => Url::fromUri('https://www.drupal.org'),

Internal URL from a route

'#url' => Url::fromRoute('entity.node.canonical', ['node' => 1]),

In Drupal 8 you are not supposed to render yourself. When porting code from Drupal 7, remove all rendering and return only render arrays.

  • Great thanks, this works! Yes I'm not drupal_render() directly, it was just for the example. – leon.nk May 23 '16 at 8:08
2

As an alternative, you can also use \Drupal\Core\Link::fromTextAndUrl() or \Drupal\Core\Link::createFromRoute().

Twig can print that as-is, you can also get a render array by calling \Drupal\Core\Link::toRenderable(). The resulting render array is the same then as building it from hand.

1

Here's an example of how to render a link in Drupal 8 with a custom class. It's a little odd, but the options are passed into the URL, not the link function.

use Drupal\Core\Url;

$options = array('attributes' => array('class' => 'my-custom-class'));
$url = Url::fromUri('http://www.example.com', $options);
$markup = \Drupal::l(t('Link Text Goes Here!'), $url);

This is useful in a field formatter, that expects markup returned. If you are doing this elsewhere, it's best to convert it to a link render array item.

use Drupal\Core\Url;

$options = array('attributes' => array('class' => 'my-custom-class'));
$build['examples_link'] = [
  '#title' => t('Link Text Goes Here!'),
  '#type' => 'link',
  '#url' => Url::fromUri('http://www.example.com', $options)
];

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