laravel-api-exception-json-response.php

<?php

class Handler extends ExceptionHandler
{
    // ...

    public function render($request, Exception $exception)
    {
        if (strpos($request->getUri(), '/api/') !== false) {
            $exception = $this->prepareException($exception);

            if ($exception instanceof \Illuminate\Http\Exception\HttpResponseException) {
                return $exception->getResponse();
            }
            if ($exception instanceof \Illuminate\Auth\AuthenticationException) {
                return $this->unauthenticated($request, $exception);
            }
            if ($exception instanceof \Illuminate\Validation\ValidationException) {
                return $this->convertValidationExceptionToResponse($exception, $request);
            }

            $response = [];
            if (method_exists($exception, 'getStatusCode')) {
                $statusCode = $exception->getStatusCode();
            } else {
                $statusCode = 500;
            }

            switch ($statusCode) {
                case 404:
                    $response['error'] = 'Not Found';
                    break;

                case 403:
                    $response['error'] = 'Forbidden';
                    break;

                default:
                    $response['error'] = $exception->getMessage();
                    break;
            }

            if (config('app.debug')) {
                $response['trace'] = $exception->getTrace();
                $response['code'] = $exception->getCode();
            }

            return response()->json($response, $statusCode);
        }

        return parent::render($request, $exception);
    }
}