move method

src/Illuminate/Auth/Authenticatable.php

@@ -13,22 +13,6 @@ trait Authenticatable
      */
     protected $rememberTokenName = 'remember_token';
 
-    /**
-     * Invalid other sessions for the current user.
-     *
-     * The application must be using the AuthenticateSession middleware.
-     *
-     * @param  string  $password
-     * @param  string  $attribute
-     * @return $this
-     */
-    public function logoutOtherDevices($password, $attribute = 'password')
-    {
-        return tap($this->forceFill([
-            $attribute => Hash::make($password)
-        ]))->save();
-    }
-
     /**
      * Get the name of the unique identifier for the user.
      *

src/Illuminate/Auth/SessionGuard.php

@@ -4,6 +4,7 @@
 
 use RuntimeException;
 use Illuminate\Support\Str;
+use Illuminate\Support\Facades\Hash;
 use Illuminate\Support\Traits\Macroable;
 use Illuminate\Contracts\Session\Session;
 use Illuminate\Contracts\Auth\UserProvider;
@@ -533,6 +534,26 @@ protected function cycleRememberToken(AuthenticatableContract $user)
         $this->provider->updateRememberToken($user, $token);
     }
 
+    /**
+     * Invalid other sessions for the current user.
+     *
+     * The application must be using the AuthenticateSession middleware.
+     *
+     * @param  string  $password
+     * @param  string  $attribute
+     * @return $this
+     */
+    public function logoutOtherDevices($password, $attribute = 'password')
+    {
+        if (! $this->user()) {
+            return;
+        }
+
+        return tap($this->user()->forceFill([
+            $attribute => Hash::make($password)
+        ]))->save();
+    }
+
     /**
      * Register an authentication attempt event listener.
      *