getMethod() === 'OPTIONS') {
$status = 200;
$contentType = 'text/plain';
$output = $this->renderPlainNotAllowedMessage($methods);
} else {
$status = 405;
$contentType = $this->determineContentType($request);
switch ($contentType) {
case 'application/json':
$output = $this->renderJsonNotAllowedMessage($methods);
break;
case 'text/xml':
case 'application/xml':
$output = $this->renderXmlNotAllowedMessage($methods);
break;
case 'text/html':
$output = $this->renderHtmlNotAllowedMessage($methods);
break;
}
}
$body = new Body(fopen('php://temp', 'r+'));
$body->write($output);
$allow = implode(', ', $methods);
return $response
->withStatus($status)
->withHeader('Content-type', $contentType)
->withHeader('Allow', $allow)
->withBody($body);
}
/**
* Determine which content type we know about is wanted using Accept header
*
* @param ServerRequestInterface $request
* @return string
*/
private function determineContentType(ServerRequestInterface $request)
{
$acceptHeader = $request->getHeaderLine('Accept');
$selectedContentTypes = array_intersect(explode(',', $acceptHeader), $this->knownContentTypes);
if (count($selectedContentTypes)) {
return $selectedContentTypes[0];
}
return 'text/html';
}
/**
* Render PLAIN not allowed message
*
* @param array $methods
* @return string
*/
protected function renderPlainNotAllowedMessage($methods)
{
$allow = implode(', ', $methods);
return 'Allowed methods: ' . $allow;
}
/**
* Render JSON not allowed message
*
* @param array $methods
* @return string
*/
protected function renderJsonNotAllowedMessage($methods)
{
$allow = implode(', ', $methods);
return '{"message":"Method not allowed. Must be one of: ' . $allow . '"}';
}
/**
* Render XML not allowed message
*
* @param array $methods
* @return string
*/
protected function renderXmlNotAllowedMessage($methods)
{
$allow = implode(', ', $methods);
return "Method not allowed. Must be one of: $allow";
}
/**
* Render HTML not allowed message
*
* @param array $methods
* @return string
*/
protected function renderHtmlNotAllowedMessage($methods)
{
$allow = implode(', ', $methods);
$output = <<
Method not allowed
Method not allowed
Method not allowed. Must be one of: $allow