Overrides Drupal\Core\Entity\EntityFormController::submit().
Overrides EntityFormController::submit
public function submit(array $form, array &$form_state) {
// @todo We should not be calling taxonomy_vocabulary_confirm_delete() from
// within the form builder.
if ($form_state['triggering_element']['#value'] == t('Delete')) {
// Rebuild the form to confirm vocabulary deletion.
$form_state['rebuild'] = TRUE;
$form_state['confirm_delete'] = TRUE;
return NULL;
}
else {
return parent::submit($form, $form_state);
}
}