Question

I want to create a RESTful API for my blog application but I can’t tell how to map controllers like this.
How can it be done? Should Post be hardcoded in the URL pattern?

Answer 1

You could map a route like this:

routes.MapRoute(
        "ShowComments", // Route name
        "Post/{id}/Comments/{action}", // URL with parameters
        new { controller = "CommentsController", action = "Show" } // Parameter defaults
        );

There’s nothing wrong with hardcoding URLs unless everything you add needs hardcoded URLs and they become unmaintainable.

What I understand is you want CommentsController called by only this route. You do not want it to be called by the default route. You can use IgnoreRoute for that.

public static void RegisterRoutes(RouteCollection routes)
{
    routes.IgnoreRoute(“Comments/{action}/{id}”);
}

This will make sure CommentsController doesn’t get called without the route we defined before. I hope that was what you were trying to do.