/**
* __invoke Magic Method
*
* @param Request $request Request
* @param Response $response Response
* @param callable $next Next
*
* @return Response Response
*/
public function __invoke(Request $request, Response $response, callable $next)
{
$config = $request->getRoute()->getMiddlewareConfig('validation');
$input = $request->getMethod() === 'GET' ? $request->getQueryParams() : $request->getParams();
try {
$validator = $this->getValidator($config);
$validator->assert($input);
} catch (NestedValidationException $validation_exception) {
$exception = new HttpMessages_Exception('Validation error.');
$exception->setErrors($validation_exception->getMessages());
$exception->setInput($input);
throw $exception;
}
$response = $next($request, $response);
return $response;
}
/**
* Get Cache Key
*
* @param Request $request Request
*
* @return string Cache Key
*/
private function getCacheKey(Request $request, $cache_duration)
{
$keys = array_merge($request->getQueryParams(), $request->getAttributes());
$cache_key = $request->getUri();
$cache_key .= $request->getMethod();
$cache_key .= $cache_duration;
$cache_key .= serialize($keys);
return md5($cache_key);
}