Symfony3 : multi-steps form and flush after forward - forms

Question

I have a form to add a new prescriber in my database. The first step consists in informing the various informations about the prescriber.
Then, I check if there are similar prescribers before adding it (2nd step with a 2nd form) and if there are, I ask the user to confirm.
In short, I have a 1-step form or a 2-steps form, depending on duplicates.
I tried with CraueFormFlowBundle but I don't know how to implement my conditional second step. My tests were inconclusive. So I decided to use forward method in my controller, and I like it !
But, I can't manage to flush my prescriber at the end of the 2nd step (after forwarding), I have this error : Unable to guess how to get a Doctrine instance from the request information for parameter "prescriber".
addAction (= step 1)
/**
* Add a new prescriber
*
* #Route("/prescribers/add", name="prescriber_add")
*/
public function addAction(Request $request) {
$em = $this->getDoctrine()->getManager();
$rp = $em->getRepository('AppBundle:Prescriber');
$p = new Prescriber();
// build the form
$form = $this->createForm(AddPrescriberType::class, $p);
// handle the submit
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
# search if a prescriber already exists
$qb = $rp->createQueryBuilder('p');
$qb->where($qb->expr()->eq('p.rpps', ':rpps'))
->orWhere($qb->expr()->andX(
$qb->expr()->like('p.lastname', ':name'),
$qb->expr()->like('p.firstname', ':firstname')
))
->setParameter('rpps', $p->getRpps())
->setParameter('name', '%'.$p->getLastname().'%')
->setParameter('firstname', '%'.$p->getFirstname().'%');
$duplicates = $qb->getQuery()->getArrayResult();
# there are duplicates
if (!empty($duplicates)) {
$em->persist($p);
// confirm the addition of the new prescriber
$params = array('prescriber' => $p, 'duplicates' => $duplicates);
$query = $request->query->all();
return $this->forward('AppBundle:Prescriber:addConfirm', $params, $query);
} else {
$em->persist($p); # save the prescriber
$em->flush(); # update database
$this->addFlash('p_success', 'The prescriber has been created successfully');
return $this->redirectToRoute('prescriber');
}
}
// show form
return $this->render('prescribers/form-step1.html.twig', array(
'form' => $form->createView()
));
}
addConfirmAction (= step 2)
/**
* Confirm addition of a new prescriber
*
* #Route("/prescribers/add/confirm", name="prescriber_add_confirm")
*/
public function addConfirmAction(Prescriber $prescriber, $duplicates, Request $request) {
$em = $this->getDoctrine()->getManager();
$form = $this->createFormBuilder()->getForm();
if ($form->handleRequest($request)->isValid()) {
$em->persist($prescriber);
$em->flush();
$this->addFlash('p_success', 'Prescriber has been created successfully');
return $this->redirectToRoute('prescriber');
}
// show confirm page
return $this->render('prescribers/form-step2.html.twig', array(
'h1_title' => 'Ajouter un nouveau prescripteur',
'form' => $form->createView(),
'p' => $prescriber,
'duplicates'=> $duplicates
));
}
I think the problem comes from the fact that I have 2 forms submissions...

Answer 1

I found a solution by using the session.
(I know it's not a perfect way but I didn't find other one)
For Symfony 3.3.*
use Symfony\Component\HttpFoundation\Session\SessionInterface;
public function addAction(Request $request, SessionInterface $session) {
// [...]
# there are duplicates
if (!empty($duplicates)) {
$data = $form->getData();
$session->set('prescriber', $data);
$session->set('duplicates', $duplicates);
return $this->forward('AppBundle:Prescriber:addConfirm');
// [...]
}
public function addConfirmAction(Request $request, SessionInterface $session) {
$em = $this->getDoctrine()->getManager();
$p = $session->get('prescriber');
$duplicates = $session->get('duplicates');
// empty form with only a CSRF field
$form = $this->createFormBuilder()->getForm();
if ($form->handleRequest($request)->isValid()) {
$em->persist($p);
$em->flush();
$this->addFlash('p_success', 'The prescriber has been created successfully');
return $this->redirectToRoute('prescriber');
}
// show confirm page
return $this->render('prescribers/form-step2.html.twig', array(
'form' => $form->createView(),
'prescriber'=> $p,
'duplicates'=> $duplicates
));
}