Pass subclass of generic model to razor view

Question

The Big Picture:

I have found what seems like a limitation of Razor and I am having trouble coming up with a good way around it.

Answer 1

You need to introduce an interface with a covariant generic type parameter into your class hierarchy:

public interface IFooModel where T : BaseBarType
{
}

And derive your BaseFooModel from the above interface.

public abstract class BaseFooModel : IFooModel where T : BaseBarType
{
}

In your controller:

[HttpGet]
public ActionResult Index()
{
    return View(new MyFooModel());
}

Finally, update your view's model parameter to be:

@model IFooModel