How can I get the path alias from a node ID or node object?

Question

I have a node object, and I am trying to use it to get a given path in Drupal 8.

There was drupal_lookup_path() in Drupal 7 but I'm not seeing any equivalent or documentation for Drupal 8.

What's the new "Drupal" way to get a path from a node object?

Would it be something simple like $node->get('path')?

This seems like a simple question, but I'm just absolutely not finding any documentation on it.

Notice I do not want the path alias for the current path; I want the path alias for an arbitrary node, given a node object or a node ID.

Answer 1

To get the path for a node id use AliasManager::getAliasByPath:

Drupal 8

$alias = \Drupal::service('path.alias_manager')->getAliasByPath('/node/'.$nid);

Drupal 9

$alias = \Drupal::service('path_alias.manager')->getAliasByPath('/node/'.$nid);

See comment from Felix Eve.

Answer 2

If you only have the nid, 4k4's solution of

$alias = \Drupal::service('path.alias_manager')->getAliasByPath('/node/'.$nid);

Works great. But if you already have a node object you can skip a step or two. Nodes actually have built in methods for getting urls.

$node->toUrl()->toString();

Would return the aliased url of the node.

toUrl() returns a url object. See here https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21Url.php/class/Url/8.2.x

and toString() is a method of the url object that returns the string representation of the url.

Answer 3

What about using Url:

use Drupal\Core\Url;    

...

$url = Url::fromRoute('entity.node.canonical', ['node' => $nid])->toString();

Answer 4

Best way to get node URL from node object-

• Absolute Path : $node->toUrl()->setAbsolute()->toString();
• Relative Path : $node->toUrl()->toString();

It will also handle node language.

Answer 5

You can also use the load method from path.alias_storage to return an array of the alias details or boolean false if there wasn't a path found for that node.

$aliasArray = \Drupal::service('path.alias_storage')->load(['source' => '/node/' . $nid]);

Answer 6

If you want to get the node alias url by languages dont forget to use the language like this.

$alias_url = \Drupal::service('path.alias_manager')->getAliasByPath('/node/'. $nid, $langcode);

If you are using it in a class do not forget to use the dependencies injection correctly.

Answer 7

Surprisingly, as of Drupal 9.2, none of the current answers work in a multilingual site that uses path prefixes for language detection.

This is what I ended up using:

// Note: using dependency injection to get the language code.
$lang_code = $this->languageManager
  ->getCurrentLanguage(LanguageInterface::TYPE_CONTENT)
  ->getId();

// Note: using dependency injection to load the node.
$test_nid = 1
$test_node = $this->entityTypeManager->getStorage('node')->load($test_nid);

// If the node has a translation, load it.
if ($test_node->hasTranslation($lang_code)) {
  $test_node = $test_node->getTranslation($lang_code);
}

// Get the localized URL for that node.
$localized_url = $test_node->toUrl('canonical', [
  'language' => $test_node->language(),
])->toString();

Answer 8

As per the new change record in Drupal 8.8.0 path.alias_manager is deprecated and path_alias.manager is introduced.

New syntax is as follows :

$url_alias = \Drupal::service('path_alias.manager')->getAliasByPath('/node/'. $nid, $langcode);

Answer 9

I was hoping for a more "Drupalesque" solution, but here's what I made myself to do the job:

  function getPathFromNID($nid) {
    $db = \Drupal::database();

    $data = $db
        ->select('url_alias', 'u')
        ->fields('u', ['alias'])
        ->condition('source', '/node/' . $nid)
        ->execute()
        ->fetchField();
    return $data;
  }