I am utilizing a AJAX type. This kind I construct from a sub-class of ContentEntityForm. Drupal Development Company Entity edited by this manner has a subject MyField. To deliver all Drupal Development Service subject values in a applicable construction I am utilizing massageFormValues() in MyFieldWidget class (sub-class of WidgetBase).

Drupal Development Company little downside is: Drupal Development Service technique massageFormValues() is known as twice on each submit. Drupal Development Company are not any different issues with Drupal Development Service type. I can correctly edit values on this manner.

So it is simply Drupal Development Service query of understanding: why Drupal do name massageFormValues() twice on each submit.

Drupal Development Company talked about and my (very simplified) code:

My ajax controller

class AjaxController extends ControllerBase {   ...   ...    public perform myController($eid) {      $myEntity = $this->entityTypeManager()->getStorage('my_entity')->load($eid);     $type = $this->entityFormBuilder()->getForm($myEntity, 'my_mode');     $renderer = Drupal::service('renderer');     $output = $renderer->renderRoot($type);        $response = new AjaxResponse();     $response->addCommand(new OpenModalDialogCommand($title, $output));       return $response;   }   ...   ... } 

MyForm is a sub-class of Drupal Development Service ContentEntityForm and it is a mode type for Drupal Development Service mode my_mode of Drupal Development Service Entity my_entity:

class MyForm extends ContentEntityForm {   ...  ...   protected perform actions(array $type, FormStateInterface $form_state) {     $actions = mum or dad::actions($type, $form_state);      $actions['submit'] = [       '#type' => 'submit',       '#value' => t('Save'),       '#ajax' => [         'callback' => '::ajaxCallback',         'event' => 'mousedown',       ],     ];    return $actions;   }   ...   ... } 

My subject widget class:

class MyFieldWidget extends WidgetBase implements ContainerFactoryPluginInterface { ... ...    public perform massageFormValues(array $values, array $type, FormStateInterface $form_state) {       // THIS CODE IS CALLED TWICE ON EVERY SUBMIT OF MY SUBMIT BUTTON DEFINED ABOVE     // BUT WHY TWICE?      return $rightStructureValues;   }  ... ... }