New Render API

render/xml.go

@@ -5,13 +5,11 @@ import (
 	"net/http"
 )
 
-type xmlRender struct{}
-
-func (_ xmlRender) Render(w http.ResponseWriter, code int, data ...interface{}) error {
-	return WriteXML(w, code, data[0])
+type XML struct {
+	Data interface{}
 }
 
-func WriteXML(w http.ResponseWriter, code int, data interface{}) error {
-	writeHeader(w, code, "application/xml; charset=utf-8")
-	return xml.NewEncoder(w).Encode(data)
+func (r XML) Write(w http.ResponseWriter) error {
+	w.Header().Set("Content-Type", "application/xml; charset=utf-8")
+	return xml.NewEncoder(w).Encode(r.Data)
 }