Convert json to form formatted JSON

form-formed-json.coffee

process = (str, obj) ->
  res = {}
  bl = (cont_str, cobj) ->
    if typeof cobj is 'object'
      for k, v of cobj
        bl cont_str + "[#{ k }]", v
    else
      res[cont_str] = cobj
  bl str, obj
  return res

o = {
  h:
    j: true
    g: 2
    m:
      w: true
      m: false
  s: true
}

Say JSON.stringify(process("child",o),null,2)

# {
#   "child[h][j]": true,
#   "child[h][g]": 2,
#   "child[h][m][w]": true,
#   "child[h][m][m]": false,
#   "child[s]": true
# }