Convert an AuthenticationException into an unauthenticated response

src/Illuminate/Foundation/Exceptions/Handler.php

@@ -5,6 +5,7 @@
 use Exception;
 use Psr\Log\LoggerInterface;
 use Illuminate\Http\Response;
+use Illuminate\Auth\AuthenticationException;
 use Illuminate\Validation\ValidationException;
 use Illuminate\Auth\Access\AuthorizationException;
 use Illuminate\Http\Exception\HttpResponseException;
@@ -100,6 +101,8 @@ public function render($request, Exception $e)
             return $e->getResponse();
         } elseif ($e instanceof ModelNotFoundException) {
             $e = new NotFoundHttpException($e->getMessage(), $e);
+        } elseif ($e instanceof AuthenticationException) {
+            return $this->unauthenticated($request, $e);
         } elseif ($e instanceof AuthorizationException) {
             $e = new HttpException(403, $e->getMessage());
         } elseif ($e instanceof ValidationException && $e->getResponse()) {
@@ -175,6 +178,22 @@ protected function convertExceptionToResponse(Exception $e)
         return SymfonyResponse::create($decorated, $e->getStatusCode(), $e->getHeaders());
     }
 
+    /**
+     * Convert an authentication exception into an unauthenticated response.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @param  \Illuminate\Auth\AuthenticationException  $e
+     * @return \Symfony\Component\HttpFoundation\Response
+     */
+    protected function unauthenticated($request, AuthenticationException $e)
+    {
+        if ($request->ajax() || $request->wantsJson()) {
+            return response('Unauthorized.', 401);
+        } else {
+            return redirect()->guest('login');
+        }
+    }
+
     /**
      * Get the html response content.
      *