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<?php
/**
* Slim Framework (https://slimframework.com)
*
* @link https://github.com/slimphp/Slim
* @copyright Copyright (c) 2011-2017 Josh Lockhart
* @license https://github.com/slimphp/Slim/blob/3.x/LICENSE.md (MIT License)
*/
namespace Slim\Handlers;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Message\ResponseInterface;
use Slim\Http\Body;
use UnexpectedValueException;
/**
* Default Slim application not found handler.
*
* It outputs a simple message in either JSON, XML or HTML based on the
* Accept header.
*/
class NotFound extends AbstractHandler
{
/**
* Invoke not found handler
*
* @param ServerRequestInterface $request The most recent Request object
* @param ResponseInterface $response The most recent Response object
*
* @return ResponseInterface
* @throws UnexpectedValueException
*/
public function __invoke(ServerRequestInterface $request, ResponseInterface $response)
{
$contentType = $this->determineContentType($request);
switch ($contentType) {
case 'application/json':
$output = $this->renderJsonNotFoundOutput();
break;
case 'text/xml':
case 'application/xml':
$output = $this->renderXmlNotFoundOutput();
break;
case 'text/html':
$output = $this->renderHtmlNotFoundOutput($request);
break;
default:
throw new UnexpectedValueException('Cannot render unknown content type ' . $contentType);
}
$body = new Body(fopen('php://temp', 'r+'));
$body->write($output);
return $response->withStatus(404)
->withHeader('Content-Type', $contentType)
->withBody($body);
}
/**
* Return a response for application/json content not found
*
* @return ResponseInterface
*/
protected function renderJsonNotFoundOutput()
{
return '{"message":"Not found"}';
}
/**
* Return a response for xml content not found
*
* @return ResponseInterface
*/
protected function renderXmlNotFoundOutput()
{
return '<root><message>Not found</message></root>';
}
/**
* Return a response for text/html content not found
*
* @param ServerRequestInterface $request The most recent Request object
*
* @return ResponseInterface
*/
protected function renderHtmlNotFoundOutput(ServerRequestInterface $request)
{
$homeUrl = (string)($request->getUri()->withPath('')->withQuery('')->withFragment(''));
return <<<END
<html>
<head>
<title>Page Not Found</title>
<style>
body{
margin:0;
padding:30px;
font:12px/1.5 Helvetica,Arial,Verdana,sans-serif;
}
h1{
margin:0;
font-size:48px;
font-weight:normal;
line-height:48px;
}
strong{
display:inline-block;
width:65px;
}
</style>
</head>
<body>
<h1>Page Not Found</h1>
<p>
The page you are looking for could not be found. Check the address bar
to ensure your URL is spelled correctly. If all else fails, you can
visit our home page at the link below.
</p>
<a href='$homeUrl'>Visit the Home Page</a>
</body>
</html>
END;
}
}
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