public function ExternalHreflang::output in External Hreflang 8

Generate the HTML tag output for a meta tag.

Return value

array|string A render array or an empty string.

Overrides LinkRelBase::output

File

src/Plugin/metatag/Tag/ExternalHreflang.php, line 30

Class

ExternalHreflang

A new hreflang tag will be made available for each language.

Namespace

Drupal\external_hreflang\Plugin\metatag\Tag

Code

public function output() {
  $elements = [];
  try {
    $value = $this
      ->value() ?? '';
    $hreflangs = self::getHrefLangsArrayFromString($value);
  } catch (\Exception $e) {
    \Drupal::logger('ExternalHreflang')
      ->warning($this
      ->t('Invalid value found in hreflang_external metatag.'));
  }
  foreach ($hreflangs ?? [] as $hreflang => $link) {
    $element = [];
    $element['#tag'] = 'link';
    $element['#attributes'] = [
      'rel' => 'alternate',
      'hreflang' => $hreflang,
      'href' => $link,
    ];
    $elements[] = $element;
  }
  return $elements;
}