custom input filter services

FormFactory.php

<?php
use Zend\Filter\FilterChain;
use Zend\ServiceManager\FactoryInterface;
use Zend\ServiceManager\ServiceLocatorInterface;

class FormFactory implements FactoryInterface
{
    public function createService(ServiceLocatorInterface $serviceLocator)
    {
        $form = new Form();

        // injecting the filtermanager is needed to use custom filter services
        $chain = new FilterChain();
        $chain->setPluginManager($serviceLocator->get('FilterManager'));
        $form->getFormFactory()->getInputFilterFactory()->setDefaultFilterChain($chain);

        return $form;
    }
}

input.spec.php

<?php
return array(
    'type' => 'myfilter'
);

module.config.php

<?php
return array(
    'filters' => array(
        'invokables' => array(
            'myfilter' => 'My\Fancy\Filter',
        ),
    )
);