Drupal version 9.3.9.

This is a process of Ajax callback, where the value of the title field is required. In the form node add, the title is displayed. It seems that the form_state does not apply to the title field. When I inspect the variables, the title field is also not reflected in the values.

function my_custom_module_field_widget_process($element, \Drupal\Core\Form\FormStateInterface $form_state,$form) {
  #$element['my_field']['#default_value'] =$form_state->getFormObject()->getEntity()- 
  #>label();this work, but useless in the callback

    $title = $form_state->getValue('title');
    $element['my_field']['#default_value'] = $title;
  return $element;
  • What do you mean by $form_state->getFormObject()->getEntity()->label(); works but is useless in the callback?
    – sonfd
    Commented Mar 26, 2022 at 18:46
  • I mean, the value is stored after the node is been saving. I need the value in an Ajax callback. The user must see the value when entering the form so that they can change or edit the value.
    – Belba
    Commented Mar 27, 2022 at 3:17

1 Answer 1


This should work:

    $node = \Drupal::routeMatch()->getParameter('node');
    if($node) {
        $title = $node->label();

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