Auth::guard('user')->user() is null in Laravel 5.3 - laravel

Question

I'm trying to pass to all templates current user object like this:
class Controller extends BaseController
{
public function __construct()
{
view()->share('usr', Auth::guard('user'));
}
}
Every controller is extended by Controller. But if i try to dump Auth::guard('user')->user() Laravel returns null, although I am logged in. Moreover when i pass this variable into template, {{ $usr->user() }} returns current user. What I've done wrong?
my config/auth.php
'defaults' => [
'guard' => 'user',
'passwords' => 'users',
],
'guards' => [
'user' => [
'driver' => 'session',
'provider' => 'user',
],
],
'providers' => [
'user' => [
'driver' => 'eloquent',
'model' => App\User::class,
],
],
Kernel.php
protected $middleware = [
\Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode::class,
];
/**
* The application's route middleware groups.
*
* #var array
*/
protected $middlewareGroups = [
'web' => [
\App\Http\Middleware\EncryptCookies::class,
\Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
\Illuminate\Session\Middleware\StartSession::class,
\Illuminate\View\Middleware\ShareErrorsFromSession::class,
//\App\Http\Middleware\VerifyCsrfToken::class,
\Illuminate\Routing\Middleware\SubstituteBindings::class,
],
'api' => [
'throttle:60,1',
'bindings',
],
];
/**
* The application's route middleware.
*
* These middleware may be assigned to groups or used individually.
*
* #var array
*/
protected $routeMiddleware = [
'auth' => \Illuminate\Auth\Middleware\Authenticate::class,
'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
'bindings' => \Illuminate\Routing\Middleware\SubstituteBindings::class,
'can' => \Illuminate\Auth\Middleware\Authorize::class,
'guest' => \App\Http\Middleware\RedirectIfAuthenticated::class,
'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,
];
my own function to log in:
public function authorizes(Request $request)
{
$this->validate($request, [
'login' => 'required|max:50',
'password' => 'required|max:50'
]);
$credentials = $request->only(['login', 'password' ]);
$remember = $request->get('remember', false) == 1 ? true : false;
if ($this->guard->attempt( $credentials, $remember)) {
$user = $this->guard->user();
$user->last_login = date('Y-m-d H:i:s');
$user->save();
return redirect()->route( 'homepage' )->withSuccess(trans('app.login.success'));
}
return redirect()->back()->withErrors(trans('app.wrong.credentials'));
}

Answer 1

In Laravel 5.3 you should change your controller constructor like so to make this work (assuming you use at least Laravel 5.3.4):
public function __construct()
{
$this->middleware(function ($request, $next) {
view()->share('usr', Auth::guard('user'));
return $next($request);
});
}
You can see this change described in Upgrade guide:
In previous versions of Laravel, you could access session variables or
the authenticated user in your controller's constructor. This was
never intended to be an explicit feature of the framework. In Laravel
5.3, you can't access the session or authenticated user in your controller's constructor because the middleware has not run yet.
As an alternative, you may define a Closure based middleware directly
in your controller's constructor. Before using this feature, make sure
that your application is running Laravel 5.3.4

Answer 2

Try to do this:
view()->share('usr', Auth::user());
Or this:
view()->share('usr', auth()->user());

Answer 3

Frist check if user is logged or not, then share the current user as:
public function __construct()
{
if (auth()->check()) {
$this->currentUser = auth()->user();
View::share('currentUser', $this->currentUser);
} else {
// you can redirect the user to login page.
}
}

Answer 4

In your case there are two things to consider
To get actual user model you should do Auth::guard('user')->user()
Auth::user() is actually not yet initialized when view()->share() is called, see https://github.com/laravel/framework/issues/6130
Therefore you could rather use view composer. In boot method of your AppServiceProvider add:
\View::composer('*', function ($view) {
$view->with('usr', \Auth::guard('user')->user());
});