Give OData service document base URL a trailing slash in WebApi OData

Question

How can I control the base URL attribute in the root element of an OData service document?

I\'m setting up an OData service using WebApi, the System.Web.Http.OData.B

Answer 1

I had the same problem with PowerPivot and I managed to fix the xml:base to be compatible with it. Here's the part of the code needed:

class MyODataPathHandler : DefaultODataPathHandler
{
    public override string Link(ODataPath path)
    {
        if (path.PathTemplate == "~")
        {
            return path.ToString() + "/";
        }
        return base.Link(path);
    }
}

and

config.Routes.MapODataRoute("odata", "odata", builder.GetEdmModel(), new MyODataPathHandler(), ODataRoutingConventions.CreateDefault());

the custom ODataPathHandler will add the extra slash for the default path, which results in an xml:base that works around the bug in PowerPivot. The second issue is PowerPivot expects data in XML, not in JSON. One workaround for that can be found at http://aspnetwebstack.codeplex.com/workitem/820