在路由器中调用未命名的控制器和方法

Question

Looking at altorouter Q&A, I found this example here on how to call a named controller and method when using altorouter.

$router->map('GET','/content/[:parent]/?[:child]?', 'content_controller#display_item', 'content');

The syntax

$router(method, route, target, name(optional));

I get how to map the method, route but do not understand how to get the target to map/call an unnamed controller or method?.

Answer 1

I tried this and it seems to work but I'll yet need confirmation if this is how we are supposed to it

$router->map('GET', '/[a:controller]/[a:action]?', function ($controller, $action = null) {
    if ($action=='') {$action = 'index';}
    if (method_exists($controller, $action)) {
        $controller::$action();
    } else {
        echo 'missing';
    }
});

Here the router is /[a:controller]/[a:action]? and the target is a function

function ($controller, $action = null) {
    if ($action=='') {$action = 'index';}
    if (method_exists($controller, $action)) {
        $controller::$action();
    } else {
        echo 'missing';
      }
    });

which get the unnamed controller and checks for the method/action. If the method/action is null index is assigned to the variable $action and then mapped.

Please confirm if it is the right war of calling an undefined controller and mehtod