Symfony 2 add dynamic form; values from database

Question

I would like to create a google categories matching(first field categorie from database and second field a user autocomplete field from google categories) form where i have an entity CategoriesConfig :

 private $id;

/**
 * @var string
 *
 * @ORM\Column(name="category_site", type="string", length=100)
 */
private $categorySite;

/**
 * @var string
 *
 * @ORM\Column(name="category_google", type="string", length=100)
 */
private $categoryGoogle;

In my Controller i tried this

 /**
 * @Route("/adminDashboard/categoriesMatching", name="googleShopping_categories")
 * @Security("has_role('ROLE_SUPER_ADMIN')")
 */
public function categoriesMatchingAction(Request $request)
{
    // create a task and give it some dummy data for this example
    $idSite = $this->get('session')->get('_defaultWebSite')->getId();
    $categories = $this->getDoctrine()->getRepository('DataSiteBundle:SiteCategory')->findBy(array('IdSite' => $idSite));;
    $categories_config = new CategoriesConfig();
    //var_dump($categories);exit;
    $form = $this->createForm(new CategoriesConfigType($categories), $categories_config);


    return $this->render('GoogleShoppingBundle:Default:categoriesMatching.html.twig', array(
        'form' => $form->createView()
    ));
}

And my form type : CategoriesConfigType:

    class CategoriesConfigType extends AbstractType
    {
    /**
     * @param FormBuilderInterface $builder
     * @param array $options
     */
    private $site_categories;

     public function __construct ($site_categories) {
        $this->site_categories = $site_categories;
    }
    public function buildForm(FormBuilderInterface $builder, array $options)
    {   
        foreach($this->site_categories as $k => $categorie){
            $builder
                ->add('categorySite')
                ->add('categoryGoogle');
        }
    }

    /**
     * @param OptionsResolver $resolver
     */
    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'Sp\GoogleShoppingBundle\Entity\CategoriesConfig'
        ));
    }
  }

I would like to have as many categories rows as row fields(website itecategorie and google categorie)

The result is like that:

Thank you in advance!

Answer 1

Your loop on $this->categories is uneffective, because the elements you add have the same name each time (categorySite and categoryGoogle), so the FormBuilder replaces the form field each time, instead of adding another one.

However, if you want your form to handle a Collection of CategoryConfigs, you need to take a different approach.

1) Create a CategoriesConfigType (as you did), but who is responsible of only a single CategoriesConfig entity

class CategoriesConfigType extends AbstractType
{     
    public function buildForm(FormBuilderInterface $builder, array $options)
    {   
        $builder
            ->add('categorySite')
            ->add('categoryGoogle');
    }

    /**
     * @param OptionsResolver $resolver
     */
    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'Sp\GoogleShoppingBundle\Entity\CategoriesConfig'
        ));
    }
}

2) Then use CollectionType field to manipulate your form as a whole collection of CategoryConfigTypes:

class YourCollectionType extends AbstractType
{     
    public function buildForm(FormBuilderInterface $builder, array $options)
    {   
        $builder->add('categoriesConfigs', CollectionType::class, array(
            'entry_type'   => CategoriesConfigType::class,
            'entry_options'  => array('required'  => false)
        );
    }
}