chill-bundles/Form/DataMapper/ScopePickerDataMapper.php

<?php

namespace Chill\MainBundle\Form\DataMapper;

use Chill\MainBundle\Entity\Scope;
use Symfony\Component\Form\DataMapperInterface;
use Symfony\Component\Form\FormInterface;

class ScopePickerDataMapper implements DataMapperInterface
{
    /**
     * @var \Chill\MainBundle\Entity\Scope
     */
    private $scope;

    public function __construct(Scope $scope = null)
    {
        $this->scope = $scope;
    }

    public function mapDataToForms($data, $forms)
    {
        $forms = iterator_to_array($forms);

        if ($this->scope instanceof Scope) {
            $forms['scope']->setData($this->scope);
            return;
        }

        if (null === $data) {
            return;
        }

        if ($data instanceof Scope) {
            $forms['scope']->setData($data);
        }
    }

    public function mapFormsToData($forms, &$data)
    {
        $forms = iterator_to_array($forms);

        if (isset($forms['scope'])) {
            if ($this->scope instanceof Scope) {
                $data = $this->scope;
            } else {
                $data = $forms['scope']->getData();
            }
        }
    }
}