How to map WebAPI routes correctly

Question

I\'m building an API for a Twitter like site using Web API and have trouble with mapping the routes

I have the following actions for the User controller:

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Answer 1

Given the flexibility you want you should take a look at

Attribute Routing in ASP.NET Web API 2

In WebApiConfig.cs enable attribute routing like

// Web API routes
config.MapHttpAttributeRoutes();

In UserController

Note given the names of actions Friends, Followers and Favorites they imply returning collections rather than single user

[RoutePrefix("api/users")]
public class UserController: ApiController {

    //eg: GET api/users?firstname={firstname}&lastname={lastname}
    [HttpGet]
    [Route("")]
    public User Get([FromUri]string firstname,[FromUri] string lastname) {...}

    //eg: GET api/users/{id}
    [HttpGet]
    [Route("{id:guid}")]
    public User Get(Guid id){...}

    //eg: GET api/users/{id}/friends
    [HttpGet]
    [Route("{id:guid}/friends")]
    public IEnumerable Friends(Guid id){...}

    //eg: GET api/users/{id}/followers
    [HttpGet]
    [Route("{id:guid}/followers")]
    public IEnumerable Followers(Guid id){...}

    //eg: GET api/users/{id}/favorites
    [HttpGet]
    [Route("{id:guid}/favorites")]
    public IEnumerable Favorites(Guid id){...}
}