Dynamic recipient in form - forms

Question

I have a custom extension with list and detail of teachers. On the detail page I include a form with code:
<formvh:render persistenceIdentifier="1:/form_definitions/myform.yaml" />
I need to set the recipient with the teacher's email shown on the page. How can I do?

Answer 1

You can achieve that by writing a custom form finisher.
Add a hidden field to your form which holds the the ID of the teacher
Fetch that id in your form finisher and load the Teacher model by your repository
A (not complete) example of a form finisher, which loads recipient data from a custom model and sends the mail to this specific data:
class EmailToContactPersonFinisher extends EmailFinisher
{
/**
* Executes this finisher
* #see AbstractFinisher::execute()
*
* #throws FinisherException
*/
protected function executeInternal()
{
/** #var FormRuntime $formRuntime */
$formRuntime = $this->finisherContext->getFormRuntime();
if ($formRuntime->getResponse()->getRequest()) {
if ($formRuntime->getResponse()->getRequest()->hasArgument('contactPerson')) {
$objectManager = GeneralUtility::makeInstance(ObjectManager::class);
/** #var ContactPersonRepository $repository */
$contactPersonRepository = $objectManager->get(ContactPersonRepository::class);
/** #var ContactPerson $contactPerson */
$contactPerson = $contactPersonRepository->findByUid($formRuntime->getResponse()->getRequest()->getArgument('contactPerson'));
}
}
// override contactPerson related options
if ($contactPerson instanceof ContactPerson) {
if ($contactPerson->getEmail()) {
$recipientAddress = $contactPerson->getEmail();
}
}
$this->setOption('recipientAddress', $recipientAddress);
parent::executeInternal();
}
}
You can also have a look at the standard emailFinisher, which gives you quick idea on the architecture.
sysext/form/Classes/Domain/Finishers/EmailFinisher.php