Asp.Net Mvc Web Api Routing 404

Question

I try to something on Web Api. First I will share my WebApiConfig

config.Routes.MapHttpRoute(
            name: "DefaultApi",
            routeTemplate: "api/{controller}/{id}",
            defaults: new { id = RouteParameter.Optional },
            constraints: new { id = @"^[0-9]+$" }
        );

        config.Routes.MapHttpRoute(
            name: "ApiCategory",
            routeTemplate: "api/tales/{category}/{id}",
            defaults: new { controller = "Tales", id = RouteParameter.Optional},
            constraints: new { category = @"^[a-z]+$" }
        );

I read this issue and I fix my apiconfig file. My purpose like this:

List GetAllTales() = api/tales/ -> 404 Not Found
Tale GetTale(int id) = api/tales/1 -> Ok!
List GetAllTalesByCategory(string categoryName) = api/tales/kids -> Ok!
Tale GetTalesByCategoryAndId(string categoryName, int id) = api/tales/kids/1 -> Ok!

İf u wonder my ApiController

[HttpGet]
    public Tale GetAllTalesByCategoryAndId(string category, int id){}

    [HttpGet]
    public IEnumerable<Tale> GetAllTalesByCategory(string category){}

    [HttpGet]
    public IEnumerable<Tale> GetAllTales(){}

    [HttpGet]
    public Tale GetTale(int id){}

Thanks for all replies.

Put your custom route before the default one or the default one will pick up your requests. — Ant P
– Ant P, Commented Dec 13, 2013 at 22:16
Actually I dont get it. İf I put costum route /api/tales/kids gives an error. Because this send a request GetTale(int id). — BerdaN
– BerdaN, Commented Dec 13, 2013 at 22:24

Ufuk Hacıoğulları · Accepted Answer · 2013-12-13 23:35:24Z

1

You need to switch the route order. Default route will handle the request when you don't specify an id (api/tales) so you need to place your custom route before that.

config.Routes.MapHttpRoute(
        name: "ApiCategory",
        routeTemplate: "api/tales/{category}/{id}",
        defaults: new { controller = "Tales", 
                        id = RouteParameter.Optional, 
                        category = RouteParameter.Optional});

config.Routes.MapHttpRoute(
        name: "DefaultApi",
        routeTemplate: "api/{controller}/{id}",
        defaults: new { id = RouteParameter.Optional },
        constraints: new { id = @"^[0-9]+$" }
    );

edited Dec 13, 2013 at 23:35

answered Dec 13, 2013 at 22:32

Ufuk Hacıoğulları

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9 Comments

BerdaN Over a year ago

I got it. How can I switch the routes? As u said I didn't use constraint for default route. But if I can do it(delete constraint) /api/tales/kids send a request GetTale(int id). I dont know how can I fix it.

BerdaN Over a year ago

Actually I dont have custom route. I have two route and it's here :/

Ufuk Hacıoğulları Over a year ago

@BerdaN ApiCategory is the custom route.

BerdaN Over a year ago

Hocam kusura bakma 2 saattir uğraşıyorum kafam döndü. Senin dediğin gibi yaptım ApiCategory üstte onun altında DefaultApi var ama yine /api/tales/ 404 dönüyor.

Ufuk Hacıoğulları Over a year ago

@BerdaN İlginç. Bende aynı route'larla /api/tales cevap veriyor. Sadece api/tales/kids hata veriyor, o da id nullable olmadığı için.

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