Respect\Validation with slim4 - php

Question

I'm trying to follow this tutorial for add post params validation: https://odan.github.io/2020/10/08/slim4-respect-validation.html
I add a lib, and use it:
private function validateProperty(array $data): void
{
$validator = new v();
$validator->addRule(v::key('name', v::allOf(
v::notEmpty()->setTemplate('The property name must not be empty'),
v::length(3, 150)->setTemplate('Invalid length')
))->setTemplate('The key "Name" is required'));
$validator->addRule(v::key('address', v::allOf(
v::notEmpty()->setTemplate('The address must not be empty'),
v::length(3, 50)->setTemplate('Invalid length')
))->setTemplate('The key "address" is required'));
$validator->addRule(v::key('original_name', v::allOf(
v::notEmpty()->setTemplate('The original_name must not be empty'),
v::length(3, 255)->setTemplate('Invalid length')
), false));
$validator->assert($data);
}
Now, if I sent a correct values, all work fine.
And when I send incorrect name for example, throw error (500):
Type: Respect\Validation\Exceptions\ValidatorException
Code: 0
Message: These rules must pass for `{ "name": "tx", "address": "street1", "original_name": "Original" }`
File: C:\MAMP\htdocs\api2\vendor\respect\validation\library\Factory.php
Line: 235
Here I do't know how to get a message of a invalit name, not this general message error.
Ok, after I create a middleware on src/middleware/RespectValidationMiddleware.php.
<?php
namespace App\Middleware;
use Psr\Http\Message\ResponseFactoryInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\MiddlewareInterface;
use Psr\Http\Server\RequestHandlerInterface;
use Respect\Validation\Exceptions\NestedValidationException;
final class RespectValidationMiddleware implements MiddlewareInterface
{
/**
* #var ResponseFactoryInterface
*/
private $responseFactory;
/**
* The constructor.
*
* #param ResponseFactoryInterface $responseFactory The response factory
*/
public function __construct(ResponseFactoryInterface $responseFactory)
{
$this->responseFactory = $responseFactory;
}
/**
* Invoke middleware.
*
* #param ServerRequestInterface $request The request
* #param RequestHandlerInterface $handler The handler
*
* #return ResponseInterface The response
*/
public function process(
ServerRequestInterface $request,
RequestHandlerInterface $handler
): ResponseInterface {
try {
return $handler->handle($request);
} catch(NestedValidationException $exception) {
$messages = [];
/** #var ValidationException $message */
foreach($exception->getIterator() as $message) {
$key = $message->getParam('name');
if($key === null) {
continue;
}
$messages[$key] = $message->getMessage();
}
$response = $this->responseFactory->createResponse();
$result = [
'error' => [
'message' => $exception->getMessage(),
'details' => $messages,
],
];
$response->getBody()->write(json_encode($result));
$response->withHeader('Content-Type', 'application/json');
return $response->withStatus(422);
}
}
}
And try to add after error middleware:
<?php
use Selective\BasePath\BasePathMiddleware;
use Slim\App;
use Slim\Middleware\ErrorMiddleware;
use App\Middleware\RespectValidationMiddleware;
return function (App $app) {
// Parse json, form data and xml
$app->addBodyParsingMiddleware();
// Add the Slim built-in routing middleware
$app->addRoutingMiddleware();
$app->add(BasePathMiddleware::class);
// Catch exceptions and errors
$app->add(ErrorMiddleware::class);
$app->add(RespectValidationMiddleware::class); // <-- here
};
The RespectValidationMiddleware line, cause a 500 error when I try to post data ,without error message.
I read that respect/validation throw a NestedValidationException, but in the first try I'm getting a ValidatorException. I don't know if can be the problem..

Answer 1

Remove the middleware and try $validator->check($data);.