Symfony3: multi-stage form and flash after forward

Question

I have a form for adding a new receptor to my database. The first step is to inform various prescribing information.

Then I check if there are similar receptors before adding (2nd step with the 2nd form), and if there is, I ask the user to confirm.

In short, I have a 1-step form or a 2-step 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 the forward method in my controller, and I like it!

But I can’t clear my appointee at the end of the second 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 is that I have 2 forms of presentation ...

Answer 1

I found a solution using session . (I know this is not an ideal way, but I did not find another)

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 )); }