How to get taxonomy by URL alias?

Question

I have a grade vocabulary with a 6. Class taxonomy term. The taxonomy page have an URL like www.example.com/foo/6-class/bar and I can't find the taxonomy with the following code.

$grade = arg(2);
$term = taxonomy_get_term_by_name($grade)

It works when I use a string (e.g. 6. Class), but not with arg(2). How can I get the correct taxonomy with this URL alias? Problem might be, that it is a exposed filter and no contextual filter. But I can not change this fact.

Neither I can get the source path with the following code.

drupal_lookup_path('source', $_GET['q']);
drupal_lookup_path('alias', current_path());

Answer 1

I know this is a pretty old question but seems unanswered yet. This Drupal 7 snippet will help you to load a taxonomy term but you need to know the name of the vocabulary it belongs to, lets say it is 'position'. Ex. www.example.com/foo/6-class/bar

$term_path=drupal_get_normal_path('position/'.arg(1));
$tid = basename($term_url);
$term = taxonomy_term_load($tid);

If you know your url is an alias to your taxonomy term, just use

$term_path=drupal_get_normal_path(current_path());
$tid = basename($term_url);
$term = taxonomy_term_load($tid);

The drupal_lookup_path with source and uri approach did not work for you because probably that path is not an alias, or at least not for your taxonomy.

Hope this helps someone.

Answer 2

I was working in Drupal 8 and for whatever reason I couldn't get any of the above solutions to work for me. Below is what I ended up using to get the url with the term id. There must better ways of doing this and I'm sure that not all of these options are required, but I hope this helps someone.

$term_url = \Drupal\Core\Url::fromRoute('entity.taxonomy_term.canonical', ['taxonomy_term' => $term->tid->value], ['absolute' => TRUE])->toString()

Answer 3

arg(2) will return the term id of the taxonomy term not the name because the path will be taxonomy/term/[tid].

You have added an alias for the term pages which the arg() function doesn't read as it reads the original path not the aliased path.

The function that you are using with take the taxonomy name as the argument. But what you are passing is the term id. So if you use taxonomy_term_load(arg(2)) then you will get details about the term in the returned term object.

Check out the documentation here: https://api.drupal.org/api/drupal/modules!taxonomy!taxonomy.module/function/taxonomy_term_load/7

Hope this helps. :)

Answer 4

The most easy way to get taxonomy term from url is

$term = menu_get_object('taxonomy_term', 2);