How deal with taxonomy term parameter in multilingue site?

Question

I have a custom controller, who take the tid parameter :

/myroute/{tid}

The tid is upcast with the taxonomy Term so in my controller method I have:

public function index(TaxonomyTerm $tid)

In this function I can get the taxonomy entity.

But for call my controller, it's not SEO friendly... i have : /myroute/43 for example.

So I won't pass the term name, because you can have spécial caractere and it's not a good pratice in a multilingue site.

So for me the best way is to work with pathauto, generate the path for the taxonomy term so i can have :

/[term_category]/[term_name]

Now my question is how pass this to my controller.

I need to call my controller like that:

<a href="myroute/{param_taxo}">

So I am not sure how get the tid of the term with friendly url for SEO.

Any experience about that?

Answer 1

You must edit your route to be like this, /myroute/{alias}.

Then you can load the term in your controller like this:

public function index($alias) {
  // Find the term by path alias.
  $path = \Drupal::service('path_alias.manager')->getPathByAlias($alias);
  if (preg_match('/taxonomy\/term\/(\d+)/', $path, $matches)) {
    $term = $this->entityTypeManager->getStorage('taxonomy_term')->load($matches[1]);
  }
  if (isset($term) && $term instanceof TermInterface) {
    $term_id = $term->id();
  }
}

NB: The path_alias.manager service is added in Drupal 8.8.x, if you use an older version you must use the path.alias_manager service instead.