OData Routing convention for Delete

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From an MVVM application I get the following URL for delete:
http://localhost/Recruiters/Addresses(guid '7777-777')/CIP.Domain.Addresses

I did not fill complete guid in the example URL, but it is a valid one.

This URL is not a normal OData route, so I created an routing convention

C#

using Microsoft.Data.Edm;
using System;
using System.Collections.Generic;
using System.Diagnostics.Contracts;
using System.Linq;
using System.Net.Http;
using System.Web;
using System.Web.Http.Controllers;
using System.Web.Http.OData.Routing;
using System.Web.Http.OData.Routing.Conventions;

namespace CIP
{
    public class AddressesRoutingConvention : EntitySetRoutingConvention
    {
        public override string SelectAction(ODataPath odataPath, HttpControllerContext controllerContext, ILookup<string, HttpActionDescriptor> actionMap)
        {
            if (odataPath.PathTemplate == "~/entityset/key/cast")
            {
                HttpMethod httpMethod = controllerContext.Request.Method;
                string httpMethodName;

                switch (httpMethod.ToString().ToUpperInvariant())
                { 
                    case "DELETE":
                        httpMethodName = "Delete";
                        break;
                    default:
                        return null;
                }

                Contract.Assert(httpMethodName != null);

                IEdmEntityType entityType = odataPath.EdmType as IEdmEntityType;

                string actionName = httpMethodName + entityType.Name;                    

                if (actionName != null)
                {
                    KeyValuePathSegment keyValueSegment = odataPath.Segments[1] as KeyValuePathSegment;
                    controllerContext.RouteData.Values[ODataRouteConstants.Key] = keyValueSegment.Value;
                    return actionName;
                }
            }
            // Not a match
            return null;
        }
    }
}

and added that to my OData controller.

C#

var conventions = ODataRoutingConventions.CreateDefault();
conventions.Insert(0, new AddressRoutingConvention());

config.Routes.MapODataRoute("Addresses", "Addresses", addressesBuilde.GetEdmModel, new DefaultODataPathHandler(), conventions);

And in my controller:

C#

public asyn Task<IHttpActionresult> Delete([FromODataUri Guid key)
{

}

But I still get a not found error when testing.

Any ideas?

Kind regards

Jeroen

Posted 10-Feb-15 4:44am

Jeroen E

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Jeroen E · Accepted Answer · 2015-02-16T21:13:00

There were two problems with this as it turns out:

First:
My web.config was not properly set up to handle a dot in the URL.
So I changed it to this:

XML

<system.webserver>
        <handlers>
          <clear />
          <add name="ExtensionlessUrlHandler-Integrated-4.0" path="/*">
              verb="*" type="System.Web.Handlers.TransferRequestHandler" 
          preCondition="integratedMode,runtimeVersionv4.0" />
        </add></handlers>
    </system.webserver>

Also in my URL i use Recruiters, but I added the routeconvention to the Addresses route.

So I also added it to the Recruiter route like this:

C#

config.Routes.MapODataRoute("Recruiters", "Recruiters", recruitersBuilder.GetEdmModel(), new DefaultODataPathHandler(), conventions);

And it works.

Jeroen