[FEATURE] Make it possible to assign variables to view

[sypets]

In event FormControllerFormActionEvent, make it possible to assign variables to view.

Resolves: #1198

[thomasrawiel]

I think you're missing the step, where you get the event's $view back to the controller.

I'd suggest just adding an array to the event for "additionalVariables" and assign those.

final class FormControllerFormActionEvent {
  ....
  protected array $additionalVariables = [];
  
  ...
  
  public function getAdditionalVariables(): array
  {
    return $this->additionalVariables;
  }
  
  public function setAdditionalVariables(array $additionalVariables): void
  {
    $this->additionalVariables = $additionalVariables;
  }
}

//keep this the same
$event = $this->eventDispatcher->dispatch(
            GeneralUtility::makeInstance(FormControllerFormActionEvent::class, $form, $this)
        );

...

$this->view->assignMultiple(
            array_merge(
                [
                    'form' => $form,
                    'ttContentData' => $this->contentObject->data,
                    'messageClass' => $this->messageClass,
                    'action' => ($this->settings['main']['confirmation'] ? 'checkConfirmation' : 'checkCreate'),
                ],
                $event->getAdditionalVariables() 
            )
        );

[sypets]

Objects should be automatically passed by reference, no? Unless there is a severe case of "Brett-vorm-Kopf" on my end. I admit, I did not test this yet.

Changing to "Draft", will test and make change as you suggested, if necessary.

[sypets]

I checked, it should be fine

[thomasrawiel]

I see. However, I'm still wondering if you actually need the whole ViewInterface, when you "just want to pass some variables" in this case.

edit: No you're right, it's probably also more convenient if you can just use the interface methods

[mschwemer]

Looks good from reading. Need to test it, though.