wallabag/src/Wallabag/CoreBundle/Filter/EntryFilterType.php

<?php

namespace Wallabag\CoreBundle\Filter;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;

class EntryFilterType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('readingTime', 'filter_number_range');
    }

    public function getName()
    {
        return 'entry_filter';
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(array(
            'csrf_protection'   => false,
            'validation_groups' => array('filtering')
        ));
    }
}