How to Dynamically Configure Form Validation Groups
3.4 version
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How to Dynamically Configure Form Validation Groups¶
Sometimes you need advanced logic to determine the validation groups. If they
can't be determined by a simple callback, you can use a service. Create a
service that implements __invoke() which accepts a FormInterface as a
parameter:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | // src/AppBundle/Validation/ValidationGroupResolver.php
namespace AppBundle\Validation;
use Symfony\Component\Form\FormInterface;
class ValidationGroupResolver
{
private $service1;
private $service2;
public function __construct($service1, $service2)
{
$this->service1 = $service1;
$this->service2 = $service2;
}
/**
* @param FormInterface $form
* @return array
*/
public function __invoke(FormInterface $form)
{
$groups = [];
// ... determine which groups to apply and return an array
return $groups;
}
}
|
Then in your form, inject the resolver and set it as the validation_groups:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | // src/AppBundle/Form/MyClassType.php;
namespace AppBundle\Form;
use AppBundle\Validator\ValidationGroupResolver;
use Symfony\Component\Form\AbstractType
use Symfony\Component\OptionsResolver\OptionsResolver;
class MyClassType extends AbstractType
{
private $groupResolver;
public function __construct(ValidationGroupResolver $groupResolver)
{
$this->groupResolver = $groupResolver;
}
// ...
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults([
'validation_groups' => $this->groupResolver,
]);
}
}
|
This will result in the form validator invoking your group resolver to set the validation groups returned when validating.
This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.