Symfony Selection of Entity using Doctrine - php

Question

i need some help.
I have a Form where i would like to either choose an existing Entity or submit a new one. So i have a Class Dolmetscher (Interpreter for languages) with title, name, surname and language. To create the Form i have a Class InterpreterType with the function
public function buildForm(FormBuilderInterface $builder, array $options) {
$builder->add('anrede', ChoiceType::class, array(
'choices' => array(
'Herr' => 'Herr',
'Frau' => 'Frau'
)
))
->add('vorname')
->add('nachname')
->add('sprache')
->add('dolmetscher', EntityType::class, array(
'class' => 'AppBundle:Dolmetscher',
'placeholder' => 'Dolmetscher wählen',
'label' => 'Dolmetscher',
'choice_value' => 'id',
'choice_label' => function ($dolmetscher) {
return $dolmetscher->getAnrede() . ' ' .
$dolmetscher->getVorname() . ' ' .
$dolmetscher->getNachname();
},
'mapped' => false,
))
->add('select', SubmitType::class, array(
'label' => 'Übernehmen',
'attr' => array(
'class' => 'btn btn-default',
'formnovalidate' => 'formnovalidate'
)
))
->add('save', SubmitType::class, array(
'label' => 'OK',
'attr' => array(
'style' => 'float: right',
'class' => 'btn btn-default'
)
))
->add('reset', SubmitType::class, array(
'label' => 'Zurücksetzen',
'attr' => array(
'style' => 'float: right; margin-right: 10px',
'class' => 'btn btn-warning',
'formnovalidate' => 'formnovalidate'
)
));
}
So i have a selection with Entities, which is working, with a 'select' Button and Form fields for a new Dolmetscher with a 'save' Button. Also a 'reset' Button
My Controller Class looks like
/**
* #Route("/u01/5", name="u1_5")
*/
public function dolmetscherAction(Request $request) {
$session = $this->get("session");
var_dump($session->get("foo"));
if (!$session->get("dolmetscher")) {
$dolmetscher = new Dolmetscher();
} else {
$dolmetscher = $session->get("dolmetscher");
}
$dolmetscherForm = $this->createForm(DolmetscherType::class, $dolmetscher);
$dolmetscherForm->handleRequest($request);
if ($dolmetscherForm->get('select')->isClicked()) {
$dolmetscher = $dolmetscherForm->get('dolmetscher');
$session->set("dolmetscher", $dolmetscher);
return $this->redirectToRoute('u1_5');
}
if ($dolmetscherForm->get('reset')->isClicked()) {
$dolmetscher = new Dolmetscher();
$session->set("dolmetscher", $dolmetscher);
return $this->redirectToRoute('u1_5');
}
if ($dolmetscherForm->get('save')->isClicked() && $dolmetscherForm->isSubmitted() && $dolmetscherForm->isValid()) {
$dolmetscher = $dolmetscherForm->getData();
$session->set("dolmetscher", $dolmetscher);
return $this->redirectToRoute('homepage');
}
return $this->render('urkunden/u01/5.html.twig', [
'form' => $dolmetscherForm->createView(),
'page_title' => 'U01'
]);
}
I want to put the Dolmetscher from the selection into $_SET for later use ,e.g. persist in DB, which works fine for a new Dolmetscher but not for my selection. I get an Exception
Serialization of 'Closure' is not allowed
I'm not sure if I'm doing this right at all (I have some OneToMany Relations and wanted to have a view for each Entity/Form and persist everything at once at the end so that i don't have only a Dolmetscher in my DB when the user quits in mid process)
I also thought it might be possible to populate the Form fields from the selection which I couldn't get to work. Can someone please help me, i would appreciate it.

Answer 1

This part of code is probably the origin of your problems :
if ($dolmetscherForm->get('select')->isClicked()) {
$dolmetscher = $dolmetscherForm->get('dolmetscher'); <------ this one
$session->set("dolmetscher", $dolmetscher);
return $this->redirectToRoute('u1_5');
}
you are trying to serialize a form object which contains a closure. Closure can not be serialized ( visit this link for more insights Exception: Serialization of 'Closure' is not allowed )
If you dump $dolmetscher variable you will probably get a form object not the entity you want. try to replace the line :
$dolmetscher = $dolmetscherForm->get('dolmetscher');
with :
$dolmetscher = $dolmetscherForm->get('dolmetscher')->getData();