Package railing implements encoding and decoding rails style query parameters - http://guides.rubyonrails.org/action_controller_overview.html#hash-and-array-parameters. Marshal and Unmarshal functions are based on the Values type which is a wrapper around url.Values. For details look at the example or GoDoc.
go get github.com/jszwec/railing
Lets assume we use rails and we have a following controller. Create method will just print out params hash.
class ColorMapsController < ApplicationController
def create
render plain: params.except(:controller, :action).inspect
end
endNow lets run this little Go program.
package main
import (
"fmt"
"image/color"
"io/ioutil"
"log"
"net/http"
"github.com/jszwec/railing"
)
type ColorMap struct {
ID int
Palette []color.RGBA
}
func main() {
cm := &ColorMap{
ID: 1,
Palette: []color.RGBA{
{255, 0, 0, 0},
{0, 255, 0, 0},
},
}
v, err := railing.Marshal(cm)
if err != nil {
log.Fatal(err)
}
resp, err := http.Post("http://127.0.0.1:3000/color_maps?"+v.Encode(), "", nil)
if err != nil {
log.Fatal(err)
}
defer resp.Body.Close()
b, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.Fatal(err)
}
fmt.Printf("%s", b)
}Output:
{"ID"=>"1", "Palette"=>[{"A"=>"0", "B"=>"0", "G"=>"0", "R"=>"255"}, {"A"=>"0", "B"=>"0", "G"=>"255", "R"=>"0"}]}
If you encounter one, post an issue.