如何在Golang Beego中解析表单数组

Question

How to parse html form array with Beego.

<input name="names[]" type="text" /> <input name="names[]" type="text" /> <input name="names[]" type="text" />

Go Beego

type Rsvp struct {
    Id    int      `form:"-"`
    Names []string `form:"names[]"`
}

rsvp := Rsvp{}
if err := this.ParseForm(&rsvp); err != nil {
    //handle error
}

input := this.Input()
fmt.Printf("%+v
", input) // map[names[]:[name1 name2 name3]]
fmt.Printf("%+v
", rsvp) // {Names:[]}

Why Beego ParseForm method return an empty names?

How to get values into rsvp.Names?

Answer 1

As you can see from the implementation of the FormValue method of the Request, it returns the first value in case of multiple ones: http://golang.org/src/pkg/net/http/request.go?s=23078:23124#L795 It would be better to get the attribute itself r.Form[key] and iterate over all the results manually. I am not sure how Beego works, but just using the raw Request.ParseForm and Request.Form or Request.PostForm maps should do the job. http://golang.org/src/pkg/net/http/request.go?s=1939:6442#L61