public static function RecipientsPlugin::updateMembersAjax in Opigno Learning path 8

Same name and namespace in other branches

1. 3.x src/Plugin/LearningPathMembers/RecipientsPlugin.php \Drupal\opigno_learning_path\Plugin\LearningPathMembers\RecipientsPlugin::updateMembersAjax()

Custom ajax callback.

Updates the list of available users to send message to once the group is changed.

File

src/Plugin/LearningPathMembers/RecipientsPlugin.php, line 132

Class

RecipientsPlugin

Class RecipientsPlugin.

Namespace

Drupal\opigno_learning_path\Plugin\LearningPathMembers

Code

public static function updateMembersAjax(array $form, FormStateInterface $form_state) {
  $current_user = \Drupal::currentUser();
  $show_all = $current_user
    ->hasPermission('message anyone regardless of groups');

  // Get the current values that are selected.
  $current_selected_users = $form_state
    ->getValue('users_to_send');

  // Keep the users that were previously selected as selected.
  foreach ($current_selected_users as $uid) {
    $form['users_to_send']['#default_value'][$uid] = $uid;
  }

  // Remove from the list of option users the ones that are not selected.
  foreach ($form['users_to_send']['#options'] as $uid => $name) {
    if (!in_array($uid, $form['users_to_send']['#default_value'])) {
      unset($form['users_to_send']['#options'][$uid]);
    }
  }

  // Add to the users of the new group to the options.
  $class_id = $form_state
    ->getValue('class');
  $learning_path_id = $form_state
    ->getValue('learning_path');
  if (!is_numeric($class_id)) {
    $class_id = 0;
  }
  if (!is_numeric($learning_path_id)) {
    $learning_path_id = 0;
  }
  $class_users = opigno_messaging_get_user_for_group($class_id, $show_all);
  $learning_path_users = opigno_messaging_get_user_for_group($learning_path_id, $show_all);
  if (!empty($class_id) && !empty($learning_path_id)) {

    // Chosen both class or training.
    $users = array_uintersect($class_users, $learning_path_users, function ($user1, $user2) {

      /** @var \Drupal\user\UserInterface $user1 */

      /** @var \Drupal\user\UserInterface $user2 */
      return $user2
        ->id() - $user1
        ->id();
    });
  }
  elseif (!empty($class_id) || !empty($learning_path_id)) {

    // Chosen only class or training.
    $users = array_merge($class_id ? $class_users : [], $learning_path_id ? $learning_path_users : []);
  }
  else {

    // No class or training were chosen.
    $users = opigno_messaging_get_all_recipients($show_all);
  }
  foreach ($users as $user) {

    /** @var \Drupal\user\UserInterface $user */
    $form['users_to_send']['#options'][$user
      ->id()] = $user
      ->getDisplayName();
  }

  // Remove the current users from the list of users
  // that once can send a message to.
  if (isset($form['users_to_send']['#options'][$current_user
    ->id()])) {
    unset($form['users_to_send']['#options'][$current_user
      ->id()]);
  }
  uasort($form['users_to_send']['#options'], 'strcasecmp');
  return $form['users_to_send'];
}