Best practice for passing enum params in Web API

Question

I have a RESTful Web API project, and I have 2 different Enum scenarios that I\'m unsure of re best practice.

Scenario 1 : Straightforward Enum Param

Answer 1

For scenario 2 there is built in support in C# for Bitmask operations in Enums using the [Flags] attribute

[Flags]
public enum OptionalField
{
    None = 0,
    RuleOwner = 1,
    Rule = 2,
    RuleAdministrator = 4,
    RuleEditor = 8,
    ...etc
}

Which is described in this SO post

As Christian already stated in his answer it's probably not good practice to use this in a REST API but it should work.