phpvms/app/Exceptions/HttpException.php

<?php

namespace App\Exceptions;

use Symfony\Component\HttpKernel\Exception\HttpException as SymfonyHttpException;

abstract class HttpException extends SymfonyHttpException
{
    /**
     * Return the RFC 7807 error type (without the URL root)
     */
    abstract public function getErrorType(): string;

    /**
     * Get the detailed error string
     */
    abstract public function getErrorDetails(): string;

    /**
     * Return an array with the error details, merged with the RFC7807 response
     */
    abstract public function getErrorMetadata(): array;

    /**
     * Return the error message as JSON
     */
    public function getJson()
    {
        $response = [];

        $response['type'] = config('phpvms.error_root').'/'.$this->getErrorType();
        $response['title'] = $this->getMessage();
        $response['details'] = $this->getErrorDetails();
        $response['status'] = $this->getStatusCode();

        // For backwards compatibility
        $response['error'] = [
            'status'  => $this->getStatusCode(),
            'message' => $this->getErrorDetails(),
        ];

        return array_merge($response, $this->getErrorMetadata());
    }

    /**
     * Return a response object that can be used by Laravel
     *
     * @return \Illuminate\Http\JsonResponse
     */
    public function getResponse()
    {
        return response()
            ->json(
                $this->getJson(),
                $this->getStatusCode(),
                [
                    'content-type' => 'application/problem+json',
                ]
            );
    }
}