func indexHandler(w http.ResponseWriter, req *http.Request) {
    items := []Check{}

    // Fetch all the items from the database
    res, err := r.Table("checks").Run(session)
    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }

    res.All(&items)
    var output []byte
    for _, v := range items {
        output, _ = json.Marshal(v.Id)
        log.Println(v.Header)
    }
    log.Println(items)
    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }
    w.Header().Set("content-type", "application/json")
    w.Write(output)
}