How to make the comment author name required for anonymous users?

Question

I'm trying to make the comment author name required with this code:

use Drupal\Core\Form\FormStateInterface;
/**
 * Implements hook_form_FORM_ID_alter().
 */
function MODULE_form_comment_comment_form_alter(array &$form, FormStateInterface $form_state, $form_id) {
  $form['name']['#required'] = true;
}

But I can't find the way to do so. How to make the comment author name required for anonymous users?

Answer 1

You can try:

if (\Drupal::currentUser()->isAnonymous()) {
  $form['author']['name']['#required'] = TRUE;
}

It is necessary because it is not right to check if user is authenticated by checking if the name field is prefilled.

We have to use \Drupal::currentUser() service in theme or module file (in controller you have to use Drupal\Core\Session\AccountProxy).

currentUser() Documentation

/**
 * Implements hook_form_FORM_ID_alter().
 */

function MODULE_form_comment_comment_form_alter(array &$form, FormStateInterface $form_state, $form_id) 
{
  if (\Drupal::currentUser()->isAnonymous()) {
    $form['author']['name']['#required'] = TRUE;
  }
  else {
    $form['author']['name']['#required'] = FALSE;
  }
}

Answer 2

I found the answer:

Implementing the hook_form_FORM_ID_alter() hook you can use the comment form id (comment_comment_form) to alter the form.

The problem was that the field name is inside the author, so you need to use $form['author']['name']['#required'] = TRUE;

/**
 * Implements hook_form_FORM_ID_alter().
 */
function MODULE_form_comment_comment_form_alter(array &$form, FormStateInterface $form_state, $form_id) {
  $form['author']['name']['#required'] = TRUE;
}