What is middleware in laravel?

Question

I\'m trying to understand how the middleware works in Laravel. Here\'s my class can any one explain how does its works.?

Answer 1

As you can see what the middleware is, now lets see the code

public function handle($request, Closure $next)
{
    if ($request->age <= 200) {
        return redirect('home');
    }

    return $next($request);
}

This code check every request and check the age variable in the request. If the age is less than 200 then the request will be redirect to the home otherwise it will go to the requesting page. Suppose you are requesting /about page but if you can not pass the middleware condition you will be redirected to /home otherwise to /about i.e. given by return $next($request);. Similary works with auth and cors middleware. You can similarly do some check like $request->user->role=='admin' and redirect to admin page or to other page.

return $next($request); this gives you the next requesting route (the original route that have requested)