qs.nim

import json, strutils

proc toQueryString*(json: JsonNode): string =
    if json == nil: return ""
    var parts: seq[string] = @[]
    for key, val in json:
        if val.kind != JNull:
            if val.kind == JString:
                parts.add(key & "=" & val.getStr().encodeUrl())
            else:
                parts.add(key & "=" & $val)
    result = "?" & parts.join("&")