How to create JSON-file in Delphi using SuperObject lib?

Question

I'm using Delphi 2010 and superobject library.

I have understand how to parse json-file, but I have no ideas how to create json?

The algorithm is:

1. Parsing JSON and load in TStringGrid
2. Adding data
3. Save all TStringGrid data to json.

Need some example.

Thanks.

Answer 1

Code sample to feed following structure to JSON object, then save to file:

(*
{
  "name": "Henri Gourvest", /* this is a comment */
  "vip": true,
  "telephones": ["000000000", "111111111111"],
  "age": 33,
  "size": 1.83,
  "addresses": [
    {
      "address": "blabla",
      "city": "Metz",
      "pc": 57000
    },
    {
      "address": "blabla",
      "city": "Nantes",
      "pc": 44000
    }
  ]
}
*)

procedure SaveJson;
var
  json, json_sub: ISuperObject;
begin
  json := SO;

  json.S['name'] := 'Henri Gourvest';
  json.B['vip'] := TRUE;
  json.O['telephones'] := SA([]);
  json.A['telephones'].S[0] := '000000000';
  json.A['telephones'].S[1] := '111111111111';
  json.I['age'] := 33;
  json.D['size'] := 1.83;

  json.O['addresses'] := SA([]);

  json_sub := SO;
  json_sub.S['address'] := 'blabla';
  json_sub.S['city'] := 'Metz';
  json_sub.I['pc'] := 57000;
  json.A['addresses'].Add(json_sub);

  json_sub.S['address'] := 'blabla';
  json_sub.S['city'] := 'Nantes';
  json_sub.I['pc'] := 44000;
  json.A['addresses'].Add(json_sub);

  json.SaveTo('C:\json_out.txt');

  json := nil;
  json_sub := nil;
end;