Library for transforming Symfony Form Views into JSON.
It is developed to be used with liform-react-final, but can be used with any form rendering supporting JSON schema.
Install per Composer from Packagist.
composer require pitch/liform
If you execute this inside a Symfony application with Symfony Flex,
LiformInterface will be available per Dependency Injection right away.
$form = \Symfony\Component\Form\Forms::createFormFactory()->create();
$form->add('foo', \Symfony\Component\Form\Extension\Core\Type\TextType::class);
$form->add('bar', \Symfony\Component\Form\Extension\Core\Type\NumberType::class);
/* ... handle the request ... */
$resolver = new \Pitch\Liform\Resolver();
$resolver->setTransformer('text', new \Pitch\Liform\Transformer\StringTransformer());
$resolver->setTransformer('number', new \Pitch\Liform\Transformer\NumberTransformer());
/* ... */
$liform = new \Pitch\Liform\Liform($resolver);
$liform->addExtension(new \Pitch\Liform\Extension\ValueExtension());
$liform->addExtension(new \Pitch\Liform\Extension\LabelExtension());
/* ... */
return $liform->transform($form->createView());namespace App\Controller;
/* use statements */
class MyFormController extends Symfony\Bundle\FrameworkBundle\Controller\AbstractController
{
protected LiformInterface $liform;
/* Let the service container inject the service */
public function __construct(LiformInterface $liform)
{
$this->liform = $liform;
}
public function __invoke(Request $request)
{
$form = $this->createForm(MyFormType::class);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
/* ... do something ... */
} else {
return new Response($this->render('my_form.html.twig', [
'liform' => $this->liform->transform($form->createView()),
]), $form->isSubmitted() ? 400 : 200);
}
}
}The TransformResult is an object that when passed through json_encode() will produce something like:
{
"schema": {
"title": "form",
"type": "object",
"properties": {
"foo": {
"title": "foo",
"type": "string"
},
"bar": {
"title": "bar",
"type": "number",
}
},
"required": [
"foo",
"bar"
]
},
"meta": {
"errors": {
"foo": ["This is required."]
}
},
"values": {
"bar": 42
}
}This library is based on Limenius/Liform. Its technique for transforming forms using resolvers and reducers is inspired by Symfony Console Form.