how to add validation to unbound form field in symfony2
I am trying to validate an unbound field in my symfony2 form.
I have googled it and found several similar solutions, so I did a copy-paste and put my own stuff in there, but it doesn't work for me. There is probably a use statement or something that was missing from all the solutions I read, omitted because everyone would know them to be necessary.. .except the rookie here that is.
My code:
<?php
namespace BizTVUserBundleForm;
use SymfonyComponentFormAbstractType;
use SymfonyComponentFormFormBuilder;
use SymfonyComponentValidatorConstraintsCallbackValidator as CallbackValidator;
use SymfonyComponentFormFormValidatorInterface;
use DoctrineORMEntityRepository;
class newServerType extends AbstractType
{
public function buildForm(FormBuilder $builder, array $options)
{
$builder
->add('company', 'entity', array(
'label' => 'Vilket företag tillhör servern? ',
'multiple' => FALSE,
'expanded' => FALSE,
'property' => 'companyName',
'class' => 'BizTVBackendBundleEntitycompany',
));
$builder->add('screenName', null, array('property_path' => false, 'label' => 'Namn på skärmen (användaren kan ändra det senare) '));
$builder-> addValidator(new CallbackValidator(function(FormInterface $form){
$screenName = $form['screenName'];
if (empty($screenName)) {
$form['screenName']->addError(new FormError("Du måste ange ett namn för den nya skärmen"));
}
}));
$builder
->add('username', 'text', array('label' => 'Servernamn (endast för serverns login samt vår referens)'))
->add('plainPassword', 'repeated', array('type' => 'password', 'first_name' => 'Lösenord för server ', 'second_name' => 'Upprepa lösenord för server',));
}
public function getName()
{
return 'biztv_userbundle_newservertype';
}
}
My error:
Catchable Fatal Error: Argument 1 passed to SymfonyComponentFormFormBuilder::addValidator() must implement interface SymfonyComponentFormFormValidatorInterface, instance of SymfonyComponentValidatorConstraintsCallbackValidator given, called in /var/www/biztv_symfony/src/BizTV/UserBundle/Form/newServerType.php on line 35 and defined in /var/www/biztv_symfony/vendor/symfony/src/Symfony/Component/Form/FormBuilder.php line 255
So, for anyone else needing validation for unbound form fields in symfony 2 here Is how I ended up doing it - turned out I was missing a bunch of use statements, they weren't listed on any of the sites where I found other threads on the subject.
I have weeded out everything but the essentials. Thanks to m2mdas for helping me along on this one.
<?php
namespace BizTVUserBundleForm;
use SymfonyComponentFormAbstractType;
use SymfonyComponentFormFormBuilder;
use SymfonyComponentFormFormInterface;
use SymfonyComponentFormCallbackValidator;
use SymfonyComponentFormFormValidatorInterface;
use SymfonyComponentFormFormError;
use DoctrineORMEntityRepository;
class newServerType extends AbstractType
{
public function buildForm(FormBuilder $builder, array $options)
{
$builder->add('screenName', null, array('property_path' => false, 'label' => 'Namn på skärmen (användaren kan ändra det senare) '));
$builder-> addValidator(new CallbackValidator(function(FormInterface $form){
$screenName = $form->get('screenName')->getData();
if (empty($screenName)) {
$form['screenName']->addError(new FormError("Du måste ange ett namn för den nya skärmen"));
}
}));
}
public function getName()
{
return 'biztv_userbundle_newservertype';
}
}
CallbackValidator FQCN应该是SymfonyComponentFormCallbackValidator 。
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