Laravel 5.1 page authentication using routes - php

Question

I'm working on a site that needs an admin panel. I am currently trying to set up the authentication of that panel, though I can not find a way to deny access from any guest users (non-admins). I have a login page, of course, and after login, it routes to the admin page, though you can also go to /admin when you're not logged in.
routes.php :
Route::get('home', function(){
if (Auth::guest()) {
return Redirect::to('/');
} else {
return Redirect::to('admin');
}
});
Route::get('admin', function () {
return view('pages.admin.start');
});
MainController.php :
namespace App\Http\Controllers;
use App\Http\Controllers\Controller;
class MainController extends Controller {
public function getIndex() {
return view('pages.index');
}
public function getAbout() {
return view('pages.about');
}
public function getPortfolio() {
return view('pages.portfolio');
}
public function getShop() {
return view('pages.shop');
}
public function getContact() {
return view('pages.contact');
}
/*public function getAdmin() {
return view('pages.admin.start');
}*/
}
I could really use some help here, because I'm totaly stuck, and yes, I have read the documentation, though maybe I'm just missing something.

Answer 1

Assuming you have a line like this:
'auth' => 'App\Http\Middleware\Authenticate',
in your app/Http/Kernel.php file:
put all the routes you need "authenticated" inside the grouping, but keep the "guest" routes outside of them :
Route::get('home', function(){
if (Auth::guest()) {
return Redirect::to('/');
} else {
return Redirect::to('admin');
}
});
Route::group( ['middleware' => 'auth' ], function(){
Route::get('admin', function () {
return view('pages.admin.start');
});
Route::just-another-route()...;
Route::just-another-route()...;
});
Documentation: http://laravel.com/docs/5.1/routing#route-groups

Answer 2

You should use a Middleware to handle authentication of your users
1) First you have to create a middleware that will check if the user requiring the page is an admin, and if not you have to redirect; something like this:
class AdminMiddleware
{
public function handle(Request $request, Closure $next )
{
//if User is not admin
//redirect to no permess
return $next($request);
}
}
2) Then you have to bind the middleware to the routes you want to be accessible only from an admin user:
//bind the middleware to all the routes inside this group
Route::group( ['middleware' => 'adminmiddleware' ], function()
{
Route::get('admin', function () {
return view('pages.admin.start');
});
//other routes
});