Grails Content Negotiation - handling unsupported type

Question

Hi,

We are using content negotiation in our service using the Accept header and the withFormat method....the issue we are facing is that we want to return a 406 http status if the Accept header has a type which is not supported by our service....can anybody give us some ideas on how would we go about doing this ?

Thanks, VK

Answer 1

  return withFormat {
     html {
        render(view: "itWorked", model: data)
     }
     json {
        render(data as JSON)
     }
     xml {
        render(data as XML)
     }
  }

  render(status: 406, text: 'ERROR')

Answer 2

this seems to acting a bit strange...so what I have now is:

return withFormat{
     json{
         render(data as JSON)
         }
     xml{
         render(data as XML)
         }
  }
  render(status: 406, text: 'ERROR')

Now when I set the Accept header to application/json, or application/xml it seems to work fine....but if I set the header to something which is not supported like text/html then I get back a 404 and not a 406....Also another strange behaviour I see is that if I set the header to something like text/plain or text/csv, the request.format parameter gets set to html in the controller....any idea why this is happening?