you can use customPUTlike this,
Restangular.one("accounts").customPUT($scope.accountEdit, $scope.accountEdit.id).then(function(account) {
TO-DO
});
customPUT ([elem, path, params, headers]): PUT . . - . , , .
Restangular, , ...
angular.extend($scope.accountEdit, Restangular.one("accounts", $scope.accountEdit.id));
$scope.accountEdit.put();