Date after another date in symfony form

Question

I have a form that contain 2 dates: start date(datedebut) and end date(datefin). I want the end date to be always after the start date. How can i do that?

My form type:

class ReservationType extends AbstractType
{
    /**
     * {@inheritdoc}
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('datedebut',DateType::class,array(
                'widget' => 'choice',
                'years' => range(date('Y'), date('Y')+20),
            ))
            ->add('datefin',DateType::class,array(
                'widget' => 'choice',
                'years' => range(date('Y'), date('Y')+20),
            ))
            ->add('nbplaces')
        ;
    }

    /**
     * {@inheritdoc}
     */
    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'Bridge\TravelBundle\Entity\Reservation'
        ));
    }

    /**
     * {@inheritdoc}
     */
    public function getBlockPrefix()
    {
        return 'Bridge_TravelBundle_Reservation';
    }
}

user_2076595 · Answer

You can use a Callback Validator for this. Injected into that callback is a ExecutionContextInterface by which you can access the form, and thus other form params.

Here's an example:

use Symfony\Component\Validator\Constraints;
use Symfony\Component\Validator\Context\ExecutionContextInterface;

// …

$builder
    ->add('start', 'datetime', 
        'constraints' => [
            new Constraints\NotBlank(),
            new Constraints\DateTime(),
        ],
    ])
    ->add('stop', 'datetime', [
        'constraints' => [
            new Constraints\NotBlank(),
            new Constraints\DateTime(),
            new Constraints\Callback(function($object, ExecutionContextInterface $context) {
                $start = $context->getRoot()->getData()['start'];
                $stop = $object;

                if (is_a($start, \DateTime::class) && is_a($stop, \DateTime::class)) {
                    if ($stop->format('U') - $start->format('U') < 0) {
                        $context
                            ->buildViolation('Stop must be after start')
                            ->addViolation();
                    }
                }
            }),
        ],
    ]);

Date after another date in symfony form

2 Answers