By lauriii on
Change record status: 
Published (View all published change records)
Project: 
Drupal core
Introduced in branch: 
10.2.x
Introduced in version: 
10.2.0
Issue links: 
https://www.drupal.org/node/3347291
Description: 

It is possible to use \Drupal\Core\Form\SubformState for nested forms that are implementing \Drupal\Core\Form\FormInterface. Previously in this case \Drupal\Core\Form\FormStateInterface::getFormObject always returned the parent form object. Now it is possible to provide \Drupal\Core\Form\SubformState a form object for the subform, enabling <code>\Drupal\Core\Form\FormStateInterface::getFormObject to return the subform object when called for the subform state.

Before:

SubformState::createForSubform($form['subform'], $form, $form_state);

After:

$subform_object = $this->entityTypeManager->getFormObject('user');
SubformState::createForSubform($form['subform'], $form, $form_state, $subform_object);
Impacts: 
Module developers