Phly\Conduit\Dispatch::__invoke PHP Method

Dispatch Class Documentation Datei anzeigen Open project: phly/conduit

__invoke() public method

Given a route (which contains the handler for given middleware), the $err value passed to $next, $next, and the request and response objects, dispatch a middleware handler. If $err is non-falsy, and the current handler has an arity of 4, it will be dispatched. If $err is falsy, and the current handler has an arity of < 4, it will be dispatched. In all other cases, the handler will be ignored, and $next will be invoked with the current $err value. If an exception is raised when executing the handler, the exception will be assigned as the value of $err, and $next will be invoked with it.

public __invoke ( Route $route, mixed $err, Request $request, Response $response, callable $next )
$route	Route
$err	mixed
$request	Phly\Conduit\Http\Request
$response	Phly\Conduit\Http\Response
$next	callable

    public function __invoke(Route $route, $err, Http\Request $request, Http\Response $response, callable $next)
    {
        $handler = $route->handler;
        $hasError = null !== $err;
        switch (true) {
            case $handler instanceof ErrorMiddlewareInterface:
                $arity = 4;
                break;
            case $handler instanceof MiddlewareInterface:
                $arity = 3;
                break;
            default:
                $arity = Utils::getArity($handler);
                break;
        }
        // @todo Trigger event with Route, original URL from request?
        try {
            if ($hasError && $arity === 4) {
                return call_user_func($handler, $err, $request, $response, $next);
            }
            if (!$hasError && $arity < 4) {
                return call_user_func($handler, $request, $response, $next);
            }
        } catch (Exception $e) {
            $err = $e;
        }
        return $next($request, $response, $err);
    }

Dispatch

__invoke