Zend\Form integration with Slim 3

This service provider integrates Zend\Form into a Slim 3 application.

Usage

1. composer require slim/twig-view

2. composer require akrabat/rka-slim-zendform

3. Register Twig-View as per the README

4. Register the FormProvider in index.php:

    $app->getContainer()->register(new RKA\Form\FormProvider);
   

5. Create a form:

    <?php
    namespace RKA;
   
    use Zend\Form\Form;
    use Zend\InputFilter\InputFilterProviderInterface;
   
    class ExampleForm extends Form implements InputFilterProviderInterface
    {
        public function init()
        {
            $this->add([
                'name' => 'email',
                'options' => [
                    'label' => 'Email address',
                ],
                'attributes' => [
                    'id'       => 'email',
                    'class'    => 'form-control',
                    'required' => 'required',
                ],
            ]);
   
            $this->add([
                'name' => 'submit',
                'type' => 'button',
                'options' => [
                    'label' => 'Go!',
                ],
                'attributes' => [
                    'class' => 'btn btn-default',
                ],
            ]);
        }
   
        public function getInputFilterSpecification()
        {
            return [
                'email' => [
                    'required' => true,
                    'filters'  => [
                        ['name' => 'StringTrim'],
                        ['name' => 'StripTags'],
                    ],
                    'validators' => [
                        ['name' => 'EmailAddress'],
                    ],
                ],
            ];
        }
    }
   

6. Example action:

    $app->map(['GET', 'POST'], '/', function ($request, $response) {
        $sm = $this['serviceManager'];
        $formElementManager = $sm->get('FormElementManager');
        $form = $formElementManager->get("RKA\ExampleForm");
   
        if ($request->isPost()) {
            $data = $request->post();
            $form->setData($data);
            $isValid = $form->isValid();
            if ($form->isValid()) {
                echo "Success!";
                exit;
            }
        }
   
        $this['view']->render($response, 'home.twig', array(
            'form' => $form
        ));
        return $response;
    });