Symfony3 Form class Entity Manager

Question

I have trouble with migration to Symfony3. I have a form in FormType class and I pass Entity manager throught constructor.

Here is example of code: Controller

$form = $this->createForm(new SubjectType($emDefault));

Form Class

class SubjectType extends AbstractType {
    private $em;
    public function __construct($em) {
        $this->em = $em;
    }

    public function buildForm(FormBuilderInterface $builder, array $options) {        
        $builder
                ->add('subject', 'entity', array(
                    'em' => $this->em,
                    'class' => 'MyBundle:Subject',
                    'query_builder' => function ($em) {
                        return $em->createQueryBuilder('s')
                        ->where('s.active = 1');
                    },
                    'property' => 'name')
                )
                ->add('create', 'submit', array('label' => 'choose'));
    }
    ...

Symfony 3 has change in method createForm to:

$this->createForm(SubjectType::class);

And with this declaration, I don't know how to pass entity manager to form class.

Anyone help, please?

symfony.com/doc/current/cookbook/form/…

Cerad
– Cerad

2016-03-09 16:57:38 +00:00
Commented Mar 9, 2016 at 16:57 — Cerad
– Cerad, Commented Mar 9, 2016 at 16:57

chalasr · Accepted Answer · 2016-03-09 16:57:50Z

2

You need to declare your FormType as a service.

services.yml

services:
    app.form.type.subject:
        class: AppBundle\Form\Type\SubjectType
        arguments: ["@doctrine.orm.entity_manager"]
        tags:
            - { name: form.type }

Re-add the commented line in your constructor and you'll be able to use $this->em as in previous versions.

answered Mar 9, 2016 at 16:57

chalasr

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2 Comments

user1336101 Over a year ago

Thank you. I found this earlier in documentation but I had some other errors in my code, so this solutions doesn't work for me, but now I used it and it is But now it finally works :)

chalasr Over a year ago

If you want, create another question with your error trace, I'll be glad to debug with you.

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