chill-bundles/Form/ActivityTypeType.php

<?php

namespace Chill\ActivityBundle\Form;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
use Chill\MainBundle\Form\Type\TranslatableStringFormType;

class ActivityTypeType extends AbstractType
{
    /**
     * @param FormBuilderInterface $builder
     * @param array $options
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('name', TranslatableStringFormType::class)
            ->add('active', ChoiceType::class, array(
                'choices' => array(
                    'Yes' => true,
                    'No'  => false
                ),
                'expanded' => true
            ));
    }

    /**
     * @param OptionsResolverInterface $resolver
     */
    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'Chill\ActivityBundle\Entity\ActivityType'
        ));
    }

    /**
     * @return string
     */
    public function getBlockPrefix()
    {
        return 'chill_activitybundle_activitytype';
    }
}