Create generic route-based authorization in Laravel - laravel

Question

I'm coming from conventional PHP background and trying to create my first big project in Laravel.
I usually user User/Role/Permission to manage user permissions in my applications. It works like follows:
User has many Roles
Role has many Permissions
to make things simple, I actually used the page names as permissions, so that I check the current page name against user permissions.
That was all easy in PHP, now I am trying to implement a similar approach in Laravel. I have User, Role, Permission models, and I check if user has permission using a method in User model as follows (inspired from a Laracasts tutorial):
public function permissions()
{
return $this->roles->map->permissions->flatten()->pluck('name')->unique();
}
And in my AuthServiceProvider I added the following code:
Gate::before(function ($user, $permission){
return $user->permissions()->contains($permission);
});
So if I add some permission (for example 'add_user') to the user, I can simply do the following in the route, and it works just fine:
Route::get('/test', function () {
return 'You are authorized';
})->name('add_user')->middleware('can:add_user');
Now since I have a lot of pages, I wouldn't like to pass specific permission name to the middleware, rather find a better and more generic way.
The only way I could come up with is to use the permission name same as the route name, and create a new middleware to take care of authorization.
So In my solution I added the following middleware class:
class BeforeMiddleware
{
public function handle($request, Closure $next)
{
$route_name = $request->route()->getName();
if(!Auth::user()->permissions()->contains($route_name)) {
throw new \Exception('Not Authorized');
}
return $next($request);
}
}
Added it to Kernel.php:
protected $routeMiddleware = [
'before' => \App\Http\Middleware\BeforeMiddleware::class,
...
];
And finally changed the route to be as follows:
Route::middleware(['before'])->group(function () {
Route::get('/test', function () {
return 'You are authorized';
})->name('add_user');
});
This way I don't actually have to pass the permission name when I check the permission, and directly get it from the route name.
I have many questions about my solution: is it really a good approach? Does it have any drawbacks? Is there a better approach?
Also I preferred to use AuthServiceProvider instead of the new middleware, but I couldn't retrieve the route name from ServiceProvider scope. Can I somehow use AuthServiceProvider for a similar case?
Sorry if I made the post somehow long, but I needed to be as clear as I could.