Laravel: Not picking up __invoke method?

Trying to use invokable controllers, but it seems to fail to find the __invoke method?

Invalid route action: [AppHttpControllersAppHttpControllersMainController].

It seems to be returning true on:

if (! method_exists($action, '__invoke')) {
    throw new UnexpectedValueException("Invalid route action: [{$action}].");
}

Routes:

<?php

Route::get('/', AppHttpControllersMainController::class);

MainController:

<?php

namespace AppHttpControllers;

class MainController extends Controller
{
    public function __invoke()
    {
        dd('main');
    }
}

Answer

Laravel by default assumes that your controllers will be located at AppHttpControllers. So when you’re adding the full path to your controller, Laravel will check it there, at AppHttpControllersAppHttpControllersMainController.

To solve it simply remove the namespace when you’re registering the route, and register it like this:

Route::get('/', MainController::class);

Alternatively, you can stop this behavior by removing ->namespace($this->namespace) from mapWebRoutes() method on RouteServiceProvider class, which is located at AppProviders folder. Then you can register your routes like this:

Route::get('/', AppHttpControllersMainController::class);