drupal 8 get taxonomy term value in node

Question

Drupal\\node\\Entity\\Node Object ( [in_preview] => [values:protected] => Array ( [vid] => Array ( [x-default] =

Answer 1

This is the correct way on how to achieve it

use Drupal\taxonomy\Entity\Term;

function modulename_node_presave(Drupal\Core\Entity\EntityInterface $entity) {
    switch ($entity->bundle()) {
        case 'programs':
            $term = Term::load($entity->get('field_program_names')->target_id);
            $name = $term->getName();
            $entity->setTitle($name);
            break;
    }
}