Trouble with Authenticate Middleware in Laravel 5.1 - php

Question

I need help with a problem that I cannot solve by myself.
I'm using Laravel 5.1 and when I try to enable the Authenticate Middleware I receive this error.
ErrorException in Manager.php line 137:
call_user_func_array() expects parameter 1 to be a valid callback, class 'Illuminate\Auth\Guard' does not have a method 'handle'
I have the middleware as it comes by default with Laravel, also the kernel.php, both look like this
<?php
namespace Imuva\Http\Middleware;
use Closure;
use Illuminate\Contracts\Auth\Guard;
class Authenticate {
/**
* The Guard implementation.
*
* #var Guard
*/
protected $auth;
/**
* Create a new filter instance.
*
* #param Guard $auth
* #return void
*/
public function __construct(Guard $auth) {
$this->auth = $auth;
}
/**
* Handle an incoming request.
*
* #param \Illuminate\Http\Request $request
* #param \Closure $next
* #return mixed
*/
public function handle($request, Closure $next) {
if ($this->auth->guest()) {
if ($request->ajax()) {
return response('Unauthorized.', 401);
} else {
return redirect()->guest('auth/login');
}
}
return $next($request);
}
}
And the kernel:
protected $routeMiddleware = [
'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
'guest' => \Imuva\Http\Middleware\RedirectIfAuthenticated::class,
'auth' => \Imuva\Http\Middleware\Authenticate::class,
];
And I use it from here:
class HomeController extends Controller {
public function __construct() {
$this->middleware('auth', ['only' => 'admin']);
}
I dont know what could be happening at all. Thanks for reading

Answer 1

I think you are mixing up everything you found regarding middlewares.
Why calling $this->middleware('auth', ['only' => 'admin']); on your constructor? Have a read here
Your handle method signature is : public function handle($request, Closure $next). You are passing an array as well?
How do you mange your users roles?