what is invokable controller in laravel?

__invoke function is kind of magic method, call automatically we try to call an object as a function.

here no need to write separate routes for all pages eg: careers, aboutus, contactus

Laravel provide a single action controller called invokable controller which contains a invoke method to perform a single task. So for doing only single task we can use this invokable controller.  

use App\Http\Controllers\SitePageController;

Route::get('careers', [SitePageController::class], 'careers']);

Route::get('aboutus',[SitePageController::class], 'aboutus']);

Route::get('contactus', [SitePageController::class, 'contactus']);

single controller can handling all those routes/requests.

Route::get('/{pages}','SitePageController')

->name('page')

->where('pages','careers|aboutus|contactus');