id : null; $model->created_by = $userid; $model->updated_by = $userid; }); static::updating(function ($model) { $userid = (! Auth::guest()) ? Auth::user()->id : null; $model->updated_by = $userid; }); static::deleting(function ($model) { $userid = (! Auth::guest()) ? Auth::user()->id : null; $model->deleted_by = $userid; }); } }