func restGetNeed(m *model.Model, w http.ResponseWriter, r *http.Request) {
var qs = r.URL.Query()
var folder = qs.Get("folder")
progress, queued, rest := m.NeedFolderFiles(folder, 100)
// Convert the struct to a more loose structure, and inject the size.
output := map[string][]map[string]interface{}{
"progress": toNeedSlice(progress),
"queued": toNeedSlice(queued),
"rest": toNeedSlice(rest),
}
w.Header().Set("Content-Type", "application/json; charset=utf-8")
json.NewEncoder(w).Encode(output)
}