Passing data to buildForm() in Symfony 3.3 - php

Question

i'm trying to pass current authenticated user to buildForm for the pass couple of hours, i searched google ... nothing worked
the error i'm getting is
The form's view data is expected to be an instance of class AppBundle\Entity\AdsList, but is a(n) array. You can avoid this error by setting the "data_class" option to null or by adding a view transformer that transforms a(n) array to an instance of AppBundle\Entity\AdsList.
on ->getForm();
i have to ideea what to do ... a view transformer ... ( https://symfony.com/doc/current/form/data_transformers.html )
but i only have an integer ...
i also want to generate unique slugs from the content ( final version wont have a title field ) if you have a good example :)
thanks in advance :)
AgencyController.php
/**
* #Route("/agency/post", name="agency_post")
*/
public function agencyNewAd(Request $request)
{
// $agency = $this->get('security.token_storage')->getToken()->getUser(); ( this didn't worked .. )
$form = $this->createForm(AgencyNewAdType::class, array(
'postedBy' => $this->getUser(),
));
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
$ad = $form->getData();
// save the task to the database
$em = $this->getDoctrine()->getManager();
$em->persist($ad);
$em->flush();
// return new Response('Saved new Post with id ' . $ad->getId());
return $this->redirectToRoute('agency_admin');
}
return $this->render('agency/new_ad.html.twig', [
'adForm' => $form->createView()
]);
}
AgencyNewAdType.php
class AgencyNewAdType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
// https://stackoverflow.com/questions/36905490/how-to-pass-parameter-to-formtype-constructor-from-controller
$builder
->add('title', TextType::class)
->add('content', TextareaType::class)
->add('category', EntityType::class, array(
// query choices from Category.Name
'class' => 'AppBundle:CategoryAd',
'choice_label' => 'name',
))
->add('postedAt', DateType::class)
->add('postedBy',HiddenType::class, array(
'data' => $options['postedBy']
))
->add('save', SubmitType::class, array('label' => 'Create Post'))
->getForm();
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults(array(
'postedBy' => null,
'data_class' => 'AppBundle\Entity\AdsList',
));
}
}

Answer 1

i needed to pass the argument to the form so it would look like
public function agencyNewAd(Request $request): Response
{
$pass = new AdsList();
$pass->setPostedBy($this->getUser());
$form = $this->createForm(AgencyNewAdType::class, $pass);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
// $form->getData() holds the submitted values iN MeM
$ad = $form->getData();
// save the ad to the database
$em = $this->getDoctrine()->getManager();
$em->persist($ad);
$em->flush();
// return new Response('Saved new Post with id ' . $ad->getId());
return $this->redirectToRoute('agency_admin');
}
return $this->render('agency/new_ad.html.twig', [
'adForm' => $form->createView()
]);
}
and in the form i need to remove postedBy ...
public function buildForm(FormBuilderInterface $builder, array $options)
{
// https://stackoverflow.com/questions/36905490/how-to-pass-parameter-to-formtype-constructor-from-controller
$builder
->add('title', TextType::class)
->add('content', TextareaType::class)
->add('category', EntityType::class, array(
// query choices from Category.Name
'class' => 'AppBundle:CategoryAd',
'choice_label' => 'name',
))
->add('postedAt', DateType::class)
->add('save', SubmitType::class, array('label' => 'Create Post'))
->getForm();
}

Answer 2

You missed a parameter when creating you from in a controller, 2nd parameter should be your object connected to the form and 3rd is the options array, so it would look like:
public function agencyNewAd(Request $request)
{
$ad = new AdsList();
$form = $this->createForm(AgencyNewAdType::class, $ad, array(
'postedBy' => $this->getUser(),
));
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
$em = $this->getDoctrine()->getManager();
$em->persist($ad);
$em->flush();
return $this->redirectToRoute('agency_admin');
}
return $this->render('agency/new_ad.html.twig', [
'adForm' => $form->createView()
]);
}
The alternative way is to pass your option to the construct of your form like this:
public function agencyNewAd(Request $request)
{
$ad = new AdsList();
$form = $this->createForm(new AgencyNewAdType($this->getUser()), $ad);
and then in your constructor of AgencyNewAdType you would accept your parameter, in this case currently logged in user.