drupal 8 paragraph field widget alter

drupal 8 paragraph field widget alter

function attendance_management_field_widget_form_alter(&$element, &$form_state, &$context) {
  if ($element['#title'] == "class label" && $element['#field_parents']['0'] == 'field_sessions_classes') {
    $delta = $element['#delta'];
    $attendance = \Drupal::routeMatch()->getParameter('attendance');
    $classlabel =  $attendance->field_sessions_classes->referencedEntities()[$delta]->field_class_label->getValue()['0']['markup'];
    $element['markup']['#text'] = $classlabel;
  }
}