Question

How can I pass symfony2 callback validator a parameter? I need to pass it a value from parameters ini.

Answer 1

This link Symfony2 – How to use Entity variables in CallbackValidator? directly address your question. Basically the ‘use’ directive can pass variables:

    ->addValidator(new CallbackValidator(function($form) use($user)

However, when passing multiple arguments, I find it easier to just make a validator class that implements FormValidatorInterface and use it:

class UserNameValidator implements FormValidatorInterface
{
    public function __construct($em)
    {
        $this->em = $em;
    }
    public function validate(FormInterface $form)
    {

I’ll even make it a service so I don’t have to worry about constructing it.