Get select field value inside of a module

Question

I have a taxonomy reference field field_location_type with terms: Term A, Term B.

Inside of my custom module, I'm setting up a presave function that will set a hidden field value depending on the term selected in field_location_type.

I'm trying to log the current value of the field just to confirm i'm getting the right one, but there are no values displaying, like ...

function general_entity_presave(Drupal\Core\Entity\EntityInterface $entity) {
    \Drupal::logger('general')->notice('here: ' . $entity->field_location_type->value);
}

How do i get the value of the select field field_location_type?

Answer 1

Update as @berdir suggested in the comments, the best way to get a field value is:

$node->get('field_location_type')->target_id

In addition, you could also use Field::getValue method if you want an array representation. Something like:

$entity->field_location_type->getValue()[0]['target_id']);

In addition if you need the term name (Option A ) from the id you can do this:

  $tid = $entity->get('field_location_type')->target_id;
  $term = \Drupal\taxonomy\Entity\Term::load($tid);
  // $name should have 'option A' or 'option b'
  $name = $term->getName();

Update: one way to figure out what methods are available to you is to use xdebug in PhpStorm. If you set a break point after $field = $entity->field_location_type; you can then type $field-> and then hit ctrl and space the editor will provide suggestions based on the type of $field Here is a screen shot: