def get_can_edit(self, obj):
        """ returns true if user has permission to edit, false otherwise """
        view = self.context.get('view')
        request = copy(self.context.get('request'))
        request._method = 'PUT'
        try:
            view.check_object_permissions(request, obj)
        except (PermissionDenied, NotAuthenticated):
            return False
        else:
            return True