Conditional validation of fields based on other field value in Symfony2

I suggest you to use a callback validator.

For example, in your entity class:

<?phpuse Symfony\Component\Validator\Constraints as Assert;/** * @Assert\Callback(methods={"myValidation"}) */class Setting {    public function myValidation(ExecutionContextInterface $context)    {        if (                $this->getRadioSelection() == '1' // RADIO SELECT EXAMPLE                &&                ( // CHECK OTHER PARAMS                 $this->getFiled1() == null                )            )        {            $context->addViolation('mandatory params');        }       // put some other validation rule here    }}

Otherwise you can build your own custom validator as described here.

Let me know you need more info.

Hope this helps.

You need to use validation groups. This allows you to validate an object against only some constraints on that class. More information can be found in the Symfony2 documentation http://symfony.com/doc/current/book/validation.html#validation-groups and also http://symfony.com/doc/current/book/forms.html#validation-groups

In the form, you can define a method called setDefaultOptions, that should look something like this:

public function buildForm(FormBuilderInterface $builder, array $options){    // some other code here ...    $builder->add('SOME_FIELD', 'password', array(        'constraints' => array(            new NotBlank(array(                'message' => 'Password is required',                'groups' => array('SOME_OTHER_VALIDATION_GROUP'),            )),        )   ))}public function setDefaultOptions(OptionsResolverInterface $resolver){    $resolver->setDefaults(array(        'validation_groups' => function (FormInterface $form) {            $groups = array('Default');            $data = $form->getData();            if ($data['SOME_OTHER_FIELD']) { // then we want password to be required                $groups[] = 'SOME_OTHER_VALIDATION_GROUP';            }            return $groups;        }    ));}

The following link provides a detailed example of how you can make use them http://web.archive.org/web/20161119202935/http://marcjuch.li:80/blog/2013/04/21/how-to-use-validation-groups-in-symfony/.

Hope this helps!