Check the answer I gave here WebApi2 attribute routing inherited controllers, which references the answer from this post .NET WebAPI Attribute Routing and inheritance.
What you need to do is overwrite the DefaultDirectRouteProvider:
public class WebApiCustomDirectRouteProvider : DefaultDirectRouteProvider {
protected override IReadOnlyList<IDirectRouteFactory>
GetActionRouteFactories(HttpActionDescriptor actionDescriptor) {
// inherit route attributes decorated on base class controller's actions
return actionDescriptor.GetCustomAttributes<IDirectRouteFactory>(inherit: true);
}
}
With that done you then need to configure it in your web API configuration:
public static class WebApiConfig {
public static void Register(HttpConfiguration config) {
.....
// Attribute routing (with inheritance).
config.MapHttpAttributeRoutes(new WebApiCustomDirectRouteProvider());
....
}
}
You will then be able to do what you described like this:
public abstract class VehicleControllerBase : ApiController {
[Route("move")] // All inheriting classes will now have a `{controller}/move` route
public virtual HttpResponseMessage Move() {
...
}
}
[RoutePrefix("car")] // will have a `car/move` route
public class CarController : VehicleControllerBase {
public virtual HttpResponseMessage CarSpecificAction() {
...
}
}
[RoutePrefix("bike")] // will have a `bike/move` route
public class BikeController : VehicleControllerBase {
public virtual HttpResponseMessage BikeSpecificAction() {
...
}
}
[RoutePrefix("bus")] // will have a `bus/move` route
public class BusController : VehicleControllerBase {
public virtual HttpResponseMessage BusSpecificAction() {
...
}
}
