Golang大猩猩从表格中解析特定格式的日期

Question

I receive date from form. This date has specific format "dd/mm/yyyy".

For parsing it to my struct I use gorilla/schema package, but this package can't recognize received data as date.

How I can parse date and put it in struct right way? As field it has format "01/02/2006"

My implementation:

type User struct {
  Date   time.Time `schema:"date"`
}


func MyRoute(w http.ResponseWriter, r *http.Request) {
  user := User{}
  r.ParseForm()
  defer r.Body.Close()

  decoder := schema.NewDecoder()
  if err := decoder.Decode(&user, r.Form); err != nil {
     fmt.Println(err)
  }
  .......................
}

Answer 1

I haven't tested this answer because I don't have time to build up an example, but according to this: http://www.gorillatoolkit.org/pkg/schema

The supported field types in the destination struct are:

• bool
• float variants (float32, float64)
• int variants (int, int8, int16, int32, int64)
• string
• uint variants (uint, uint8, uint16, uint32, uint64)
• struct
• a pointer to one of the above types
• a slice or a pointer to a slice of one of the above types

Non-supported types are simply ignored, however custom types can be registered to be converted.

so you need to say:

var timeConverter = func(value string) reflect.Value {
    if v, err := time.Parse("02/01/2006", value); err == nil {
        return reflect.ValueOf(v)
    }
    return reflect.Value{} // this is the same as the private const invalidType
}

func MyRoute(w http.ResponseWriter, r *http.Request) {
    user := User{}
    r.ParseForm()
    defer r.Body.Close()
    decoder := schema.NewDecoder()
    decoder.RegisterConverter(time.Time{}, timeConverter)

    if err := decoder.Decode(&user, r.Form); err != nil {
        fmt.Println(err)
    }
}

see: https://github.com/gorilla/schema/blob/master/decoder.go