Application Integration

Usage in a zend-mvc Application

The following example shows one potential use case of zend-inputfilter within a zend-mvc based application. The example uses a module, a controller and the zend-inputfilter plugin manager.

Before starting, make sure zend-inputfilter is installed and configured.

Create Input Filter

Create an input filter as separate class, e.g. module/Album/src/InputFilter/QueryInputFilter.php:

namespace Album\InputFilter;

use Zend\Filter\ToInt;
use Zend\I18n\Validator\IsInt;
use Zend\InputFilter\InputFilter;

class QueryInputFilter extends InputFilter
{
    public function init()
    {
        // Page
        $this->add(
            [
                'name'              => 'page',
                'allow_empty'       => true,
                'validators'        => [
                    [
                        'name' => IsInt::class,                        
                    ],                    
                ],
                'filters'           => [
                    [
                        'name' => ToInt::class,
                    ],
                ],
                'fallback_value'    => 1,
            ]
        );

        // …
    }
}

Using Input Filter

Create Controller

Using the input filter in a controller, e.g. module/Album/Controller/AlbumController.php:

namespace Album\Controller;

use Album\InputFilter\QueryInputFilter;
use Zend\InputFilter\InputFilterInterface;
use Zend\Mvc\Controller\AbstractActionController;

class AlbumController extends AbstractActionController
{
    /** @var InputFilterInterface */
    private $inputFilter;

    public function __construct(InputFilterInterface $inputFilter)
    {
        $this->inputFilter = $inputFilter;        
    }

    public function indexAction()
    {
        $this->inputFilter->setData($this->getRequest()->getQuery());
        $this->inputFilter->isValid();
        $filteredParams = $this->inputFilter->getValues();

        // …
    }
}

Create Factory for Controller

Fetch the QueryInputFilter from the input filter plugin manager in a factory, e.g. src/Album/Handler/ListHandlerFactory.php:

namespace Album\Controller;

use Album\InputFilter\QueryInputFilter;
use Interop\Container\ContainerInterface;
use Zend\InputFilter\InputFilterPluginManager;
use Zend\ServiceManager\Factory\FactoryInterface;

class AlbumControllerFactory implements FactoryInterface
{
    public function __invoke(
        ContainerInterface $container,
        $requestedName,
        array $options = null
    ) {
        /** @var InputFilterPluginManager $pluginManager */
        $pluginManager = $container->get(InputFilterPluginManager::class);
        $inputFilter   = $pluginManager->get(QueryInputFilter::class);

        return new AlbumController($inputFilter);
    }
}

Instantiating the Input Filter

The InputFilterPluginManager is used instead of directly instantiating the input filter to ensure to get the filter and validator plugin managers injected. This allows usage of any filters and validators registered with their respective plugin managers.

Additionally the InputFilterPluginManager calls the init method after instantiating the input filter, ensuring all dependencies are fully injected first.

Register Input Filter and Controller

Extend the configuration of the module to register the input filter and controller in the application, e.g. module/Album/config/module.config.php:

namespace Album;

use Zend\ServiceManager\Factory\InvokableFactory;

return [
    'controllers' => [
        'factories' => [
            // Add this line
            Controller\AlbumController::class => Controller\AlbumControllerFactory::class,
        ],
    ],
    // Add the following array
    'input_filters' => [
        'factories => [
            InputFilter\QueryInputFilter::class => InvokableFactory::class,
        ],
    ],
    // …
];