Golang解析形式

Question

如果我有以下表单设置：{{ range $key, $value := .Scores }}    <input id="{{$value.Id}}_rating__1" type="radio" name="rating[{{$value.Id}}]" value="-1">    <input id="{{$value.Id}}_rating__0" type="radio" name="rating[{{$value.Id}}]" value="0">    <input id="{{$value.Id}}_rating__2" type="radio" name="rating[{{$value.Id}}]" value="+1">{{ end }}我如何才能正确提取该数据？知道.Scores可以包含多个结构func categoryViewSubmit(w http.ResponseWriter, r *http.Request) {    err := r.ParseForm()    if err != nil {        log.Fatal(err)    }    fmt.Println("POST")    fmt.Printf("%+v\n", r.Form()) // annot call non-function r.Form (type url.Values)    fmt.Printf("%+v\n", r.FormValue("rating")) // Returns nothing}