WebAPI routing does not work

Question

I have WebApiConfig

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 } ); } }

Web API controller:

[RoutePrefix("api/Trip")] public class TripApiController : ApiController { [Route("SaveRouting")] [HttpPost] public async Task<HttpResponseMessage> SaveRouting(string points, int tripId, decimal totalMileage) { // ...... return Request.CreateResponse(HttpStatusCode.OK); }

and call from jquery:

 $.post("/api/trip/SaveRouting", { points: JSON.stringify(arrayStops), tripId: $("#hdTripId").val(), totalMileage: tMiles }, function(resp) { App.unblockUI(blockElRouting); });

it tries to call, but failure:

App Insights says:

what is invalid?

Nkosi · Accepted Answer · 2018-08-01 20:24:19Z

Create a model to hold the posted data

public class RouteModel { public string points { get; set; } public int tripId { get; set; } public decimal totalMileage { get; set; } }

Update the controller action to expect that model from the body of the request

[RoutePrefix("api/Trip")] public class TripApiController : ApiController { [Route("SaveRouting")] [HttpPost] public async Task<IHttpActionResult> SaveRouting([FromBody] RouteModel route) { if(ModelState.IsValid) { string points = route.points; int tripId = route.tripId; decimal totalMileage = route.totalMileage; // ...... return Ok(); } return BadRequest(ModelState); } }

Finally, on the client side update the request

var model = { points: arrayStops, tripId: $("#hdTripId").val(), totalMileage: tMiles }; $.ajax({ type: "POST", url: "/api/trip/SaveRouting", data: JSON.stringify(model), contentType: "application/json; charset=utf-8", dataType: "json", success: function(data){ App.unblockUI(blockElRouting); } });

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