Web api route values is empty on action executes filter

Question

I am using a custom action filter on my controller action.

My controller action is like this:

    [HttpPost]
    [Route("listener")]   
    [MyAttr]     
    public IHttpActionResult Listener([FromBody]Parameters request)
    {
        return Ok();
    }

I want to access Route("listener") values from action filter.

public class MyAttr: ActionFilterAttribute
{        
    public async override Task OnActionExecutedAsync(HttpActionExecutedContext actionExecutedContext, CancellationToken cancellationToken)
    {
         var route = actionExecutedContext.ActionContext.RequestContext.RouteData;       
    }
}

But RouteData values collection has no items. How can access route value?

My configuration is like this:

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
        config.MapHttpAttributeRoutes();

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

Its not route data, route data can only be supplied in the URL and your method has data supplied in the http body. — Igor
– Igor, Commented Jul 8, 2017 at 12:09
@bookmarker Do you want to access the URI the request is coming to? — Vlad Stryapko
– Vlad Stryapko, Commented Jul 8, 2017 at 12:13
You could access its attributes, try actionExecutedContext.ActionContext.ActionDescriptor.GetCustomAttributes<Route>() — Khanh TO
– Khanh TO, Commented Jul 8, 2017 at 12:13
and then you can access its Template property msdn.microsoft.com/en-us/library/… — Khanh TO
– Khanh TO, Commented Jul 8, 2017 at 12:18

Shahzad Khan · Accepted Answer · 2017-07-12 10:25:35Z

0

Please add /{action} in your WebApiConfig.cs file.

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
        config.MapHttpAttributeRoutes();

        config.Routes.MapHttpRoute(
            name: "DefaultApi",
            routeTemplate: "api/{controller}/{action}/{id}",
            defaults: new { id = RouteParameter.Optional }
        );
    }
}

api/ControllerName/Listener the link will to be that.

answered Jul 12, 2017 at 10:25

Shahzad Khan

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