use Drupal\Core\Form\FormStateInterface;
use Drupal\node\Entity\Node;

/**
 * Implements hook_form_alter().
 */
function filter_events_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  if (
    $form_id === 'views_exposed_form' &&
    isset($form['#id']) &&
    $form['#id'] === 'views-exposed-form-news-block-4'
  ) {

    \Drupal::logger('filter_events')->notice('Mulai mengisi select-year.');

    // Ambil semua node konten news
    $nids = \Drupal::entityQuery('node')
      ->condition('type', 'news')
      ->condition('status', 1)
      ->execute();

    \Drupal::logger('filter_events')->notice('Jumlah node news ditemukan: @count', [
      '@count' => count($nids),
    ]);

    if (!empty($nids)) {
      $nodes = Node::loadMultiple($nids);
      $years = [];

      foreach ($nodes as $node) {
        $year = date('Y', $node->getCreatedTime());
        $years[] = $year;
      }

      \Drupal::logger('filter_events')->notice('Tahun yang ditemukan: @years', [
        '@years' => implode(', ', $years),
      ]);

      if (!empty($years)) {
        $min_year = min($years);
        $max_year = max($years);

        \Drupal::logger('filter_events')->notice('Tahun range: @min - @max', [
          '@min' => $min_year,
          '@max' => $max_year,
        ]);

        // Generate opsi tahun
        $year_options = ['' => 'All'];

        for ($y = $max_year; $y >= $min_year; $y--) {
          $year_options[$y] = $y;
        }

        // Coba isi ke form exposed
        if (isset($form['select-year'])) {
          $form['select-year']['#options'] = $year_options;

          \Drupal::logger('filter_events')->notice('Form element select-year ditemukan di exposed form, options ditambahkan.');
        }
        else {
          // Jika tidak ada, tambahkan manual
          $form['select-year'] = [
            '#type' => 'select',
            '#title' => t('Year'),
            '#options' => $year_options,
            '#attributes' => ['id' => 'select-year', 'class' => ['form-control', 'form-control-sm']],
            '#weight' => -10,
          ];

          \Drupal::logger('filter_events')->warning('Form element select-year TIDAK ditemukan, dibuat manual oleh hook_form_alter().');
        }
      }
    }
    else {
      \Drupal::logger('filter_events')->warning('Tidak ada node news ditemukan.');
    }
  }
}
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