Create a custom resource form on Sylius (Symfony3) : "Expected scalar, but got array" - forms

Question

I try to create a custom form for my Sylius Resource "article" using the Sylius doc. Without creating custom form, everything works well, but if I want to make a custom form, I have this error "Invalid type for path "sylius_resource.resources.blog.article.classes.form". Expected scalar, but got array."
Here is my ArticleType class :
<?php
namespace BlogAdminBundle\Form\Type;
use Symfony\Component\Form\FormBuilderInterface;
use Sylius\Bundle\ResourceBundle\Form\Type\AbstractResourceType;
class ArticleType extends AbstractResourceType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
// Build your custom form!
$builder->add('id', HiddenType::class)
->add('titre', TextType::class)
->add('date', DateType::class, array('html5' => true))
->add('contenu', CKEditorType::class)
->add('tags', TextType::class)
->add('resume', TextareaType::class)
->add('save', SubmitType::class, array('label' => 'Enregistrer l\'article'));
}
public function getName()
{
return 'admin_article';
}
}
And the declaration of my resource :
sylius_resource:
resources:
blog.article:
driver: doctrine/orm
classes:
model: BlogBundle\Entity\Article
form:
default: BlogAdminBundle\Form\Type\ArticleType
Does anyone know what is the problem ?
Thanks everyone !

Answer 1

you have to register your form as form.type service. And you have to send argument of your form class. You should do something like this:
services:
app.form.type.article:
class: BlogAdminBundle\Form\Type\ArticleType
arguments: [BlogBundle\Entity\Article]
tags:
- { name: form.type }
You can check what classes are used for your Article by using this command:
php bin/console debug:container | grep article