@jcarres-mdsol @sheavalentine-mdsol So, actually, we have been using symbols here:

So, if I did:

```
respond_to(:hale)

# then I would call

object.to_media_type(:hale, options)
```
We have not used strings. I suppose, we could support :hale, 'hale' or 'application/hale+json'. But for now, for rails support, just :hale is sufficient since rails passes that in.