52 lines
1.6 KiB
PHP
52 lines
1.6 KiB
PHP
<?php
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declare(strict_types=1);
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namespace App\Middleware;
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use App\Http\ServerRequest;
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use JsonException;
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use Psr\Http\Message\ResponseInterface;
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use Psr\Http\Server\RequestHandlerInterface;
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use const JSON_THROW_ON_ERROR;
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/**
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* When sending data using multipart forms (that also include uploaded files, for example),
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* it isn't possible to encode JSON values (i.e. booleans) in the other submitted values.
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*
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* This allows an alternative body format, where the entirety of the JSON-parseable body is
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* set in any multipart parameter, parsed, and then assigned to the "parsedBody"
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* attribute of the PSR-7 request. This implementation is transparent to any controllers
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* using this code.
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*/
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final class HandleMultipartJson extends AbstractMiddleware
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{
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public function __invoke(ServerRequest $request, RequestHandlerInterface $handler): ResponseInterface
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{
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$parsedBody = $request->getParsedBody();
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if (!empty($parsedBody)) {
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$parsedBody = array_filter(
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(array)$parsedBody,
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static function ($value) {
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return $value && 'null' !== $value;
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}
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);
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if (1 === count($parsedBody)) {
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$bodyField = current($parsedBody);
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if (is_string($bodyField)) {
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try {
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$parsedBody = json_decode($bodyField, true, 512, JSON_THROW_ON_ERROR);
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$request = $request->withParsedBody($parsedBody);
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} catch (JsonException) {
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}
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}
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}
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}
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return $handler->handle($request);
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}
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}
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