FilterEntityNameTransformer.php

<?php

namespace BVD\PetroleumBundle\Util;

use Lexik\Bundle\FormFilterBundle\Filter\Transformer\FilterTransformerInterface;

use Symfony\Component\Form\FormInterface;

class FilterEntityNameTransformer implements FilterTransformerInterface
{
    /**
     * {@inheritDoc}
     * @see Lexik\Bundle\FormFilterBundle\Filter\Transformer.FilterTransformerInterface::transform()
     */
    public function transform(FormInterface $form)
    {
        $values = array('value' => $form->getData());
        $values['field'] = $form->getConfig()->getOptions()['association_field'];

        return $values;
    }
}