symfony - dropdown menu doesn't select the option - symfony

Question

I made a page on symfony to administrate some products with a dropdown menu linked to a category table.
The categoryid is well saved on the product, but the dropdown never select the good option, I don't find why.
Here is the category part in my class Dproduct :
/**
* #ORM\ManyToOne(targetEntity=RCategory::class, inversedBy="products")
* #ORM\JoinColumn(name="categoryId", referencedColumnName="categoryId", onDelete="CASCADE")
*/
private $categoryId;
public function getCategoryId(): ?RCategory
{
return $this->categoryId;
}
public function setCategoryId(?RCategory $categoryId): self
{
$this->categoryId = $categoryId;
return $this;
}
here is my class RCategory:
/**
* RCategory
*
* #ORM\Table(name="r_category")
* #ORM\Entity
*/
class RCategory
{
/**
* #var int
*
* #ORM\Column(name="categoryId", type="integer", nullable=false)
* #ORM\Id
* #ORM\GeneratedValue(strategy="IDENTITY")
*/
private $categoryId;
/**
* #var string
*
* #ORM\Column(name="categoryLib", type="string", length=50, nullable=false)
*/
private $categoryLib;
/**
* #Gedmo\Slug(fields={"categoryLib"})
* #ORM\Column(type="string", length=128, unique=true)
*/
public function getCategoryId(): ?int
{
return $this->categoryId;
}
public function getCategoryLib(): ?string
{
return $this->categoryLib;
}
public function setCategoryLib(string $categoryLib): self
{
$this->categoryLib = $categoryLib;
return $this;
}
here is my buildForm function :
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('categoryId', ChoiceType::class, [
'mapped' => false,
'choices' => $options['choiceCategory'],
'label' => 'Catégorie'
])
->add('productLib', TextType::class, [
'label' => 'Libellé',
])
->add('Enregister', SubmitType::class)
;
}
And my choiceCategory function :
public function choiceCategory(){
$choices = [];
$categories = $this->getCategory();
foreach ($categories as $categorie) {
$choices[$categorie->getCategorylib()] = $categorie->getCategoryid();
}
return $choices;
}
And finaly my controller :
$product = $this->getDoctrine()
->getRepository('App:DProduct')
->findOneBy(array('slug' => $slug));
...
$form = $this->createForm(productType::class, $product, array('choiceCategory'=>$categoryController->choiceCategory()));
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
... Data is well saved ...
}
return $this->render(
'form/meuble.html.twig',
array(
'form' => $form->createView(),
'titlePage' => $titlePage,
'product' => $product
)
);
Does anyone see where is the problem ?
Thanks,
Best regards,
Matthieu

Answer 1

You are using an unmapped field, therefore it won't set any data based on the product you are editing.
You can set the data with de data option
$product = $builder->getData();
...
->add('categoryId', ChoiceType::class, [
'mapped' => false,
'choices' => $options['choiceCategory'],
'label' => 'Catégorie'
'data' => $product->getCategory(),
])
U might be able to use a mapped field and use the EntityType instead of the ChoiceType to build the choices. Notice the choice_label and query_builder options.