エラー時にログに出力する情報と画面に表示する情報を分ける #LaravelTokyo

okashoi@Laravel Meetup Tokyo Vol.12

•
•
• ← New!!
• 6
• LT 1
• 🙇 #LaravelTokyo
!2

https://speakerdeck.com/suzuken/phpcon2017
!6

• AppExceptionsHandler
• report()
• HTTP render()
• IlluminateFoundationExceptionsHandler

IlluminateFoundationExceptionsHandler::render()
!13
/**
* Render an exception into a response.
*
* @param IlluminateHttpRequest $request
* @param Exception $e
* @return IlluminateHttpResponse|SymfonyComponentHttpFoundationResponse
*/
public function render($request, Exception $e)
{
if (method_exists($e, 'render') && $response = $e->render($request)) {
return Router::toResponse($request, $response);
} elseif ($e instanceof Responsable) {
return $e->toResponse($request);
}
$e = $this->prepareException($e);
if ($e instanceof HttpResponseException) {
return $e->getResponse();
} elseif ($e instanceof AuthenticationException) {
return $this->unauthenticated($request, $e);
} elseif ($e instanceof ValidationException) {
return $this->convertValidationExceptionToResponse($e, $request);
}
return $request->expectsJson()
? $this->prepareJsonResponse($request, $e)
: $this->prepareResponse($request, $e);
}

!14
/**
*
*/
{
}
}
}
render

!15
/**
*
*/
{
}
}
}

!16
/**
*
*/
{
}
}
}

!17
/**
*
*/
{
}
}
}
Contet-Type ON/OFF

!19
<?php
namespace AppExceptions;
/**
* Class MyAppException
* @package AppExceptions
*/
abstract class MyAppException extends Exception
{
/**
* @return int HTTP ステータスコード
*/
abstract public function getStatusCode(): int;
/**
* @return string ユーザ向けのメッセージ
*/
abstract public function getUserMessage(): string;
}

!20
<?php
/**
*/
{
/**
*/
/**
*/
}
HTTP

!21
<?php
/**
*/
{
/**
*/
/**
*/
}

AppExceptionsHandler
• report() 🙆
• HTTP  
getStatusCode() getUserMessage()
• →
!22

!23
/**
*
*/
{
}
}
}

!24
/**
*
*/
{
}
}
}

IlluminateFoundationExceptionsHandler::prepareResponse()
!25
/**
* Prepare a response for the given exception.
*
* @return SymfonyComponentHttpFoundationResponse
*/
protected function prepareResponse($request, Exception $e)
{
if (! $this->isHttpException($e) && config('app.debug')) {
return $this->toIlluminateResponse($this->convertExceptionToResponse($e), $e);
}
if (! $this->isHttpException($e)) {
$e = new HttpException(500, $e->getMessage());
}
return $this->toIlluminateResponse(
$this->renderHttpException($e), $e
);
}

IlluminateFoundationExceptionsHandler::prepareResponse()
!26
/**
* Prepare a response for the given exception.
*
* @return SymfonyComponentHttpFoundationResponse
*/
protected function prepareResponse($request, Exception $e)
{
if (! $this->isHttpException($e) && config('app.debug')) {
return $this->toIlluminateResponse($this->convertExceptionToResponse($e), $e);
}
if (! $this->isHttpException($e)) {
$e = new HttpException(500, $e->getMessage());
}
return $this->toIlluminateResponse(
$this->renderHttpException($e), $e
);
}
SymfonyComponentHttpKernelExceptionHttpException  
HTTP

HttpException 😄
!28
<?php
use SymfonyComponentHttpKernelExceptionHttpException;
/**
*/
{
/**
*/
/**
*/
/**
* @return HttpException
*/
public function toHttpException(): HttpException
{
return new HttpException(
$this->getStatusCode(),
$this->getUserMessage(),
$this->getPrevious(),
[],
$this->code
);
}
}
※ JSON

AppExceptionsHandler
!29
/**
* Render an exception into an HTTP response.
*
* @param Exception $exception
* @return IlluminateHttpResponse
*/
public function render($request, Exception $exception)
{
// 既存の render の仕組みを活用するため、HttpException に変換する
if ($exception instanceof MyAppException) {
$exception = $exception->toHttpException();
}
return parent::render($request, $exception);
}

!30
<?php
use Throwable;
/**
* Class HogeException
*/
abstract class HogeException extends MyAppException
{
/**
*/
public function getStatusCode(): int
{
return 500;
}
/**
*/
public function getUserMessage(): string
{
return 'ごめん';
}
}
•
• throw new HogeException('エラーです'); 
•
• Blade  
$exception->getMessage() 
HTTP

+α URL
https://github.com/okashoi/colab-techbook6-example
!33

IlluminateFoundationExceptionsHandler::report()
!36
/**
* Report or log an exception.
*
* @return mixed
*
* @throws Exception
*/
public function report(Exception $e)
{
if ($this->shouldntReport($e)) {
return;
}
if (is_callable($reportCallable = [$e, 'report'])) {
return $this->container->call($reportCallable);
}
try {
$logger = $this->container->make(LoggerInterface::class);
} catch (Exception $ex) {
throw $e;
}
$logger->error(
$e->getMessage(),
array_merge($this->context(), ['exception' => $e]
));
}

!37
/**
*
* @return mixed
*
* @throws Exception
*/
{
return;
}
}
try {
throw $e;
}
$logger->error(
$e->getMessage(),
));
}

!38
/**
*
* @return mixed
*
* @throws Exception
*/
{
return;
}
}
try {
throw $e;
}
$logger->error(
$e->getMessage(),
));
}
report()

!39
/**
*
* @return mixed
*
* @throws Exception
*/
{
return;
}
}
try {
throw $e;
}
$logger->error(
$e->getMessage(),
));
}
context

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