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Generating JSON and posting it
  1. New
  2. How-to
  3.  REST
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  1. Hannu Pikkarainen
  2. PowerBuilder
  3. Tuesday, 10 February 2026 07:44 AM UTC

Hi,

I need to generate JSON and post it to REST-interface and I have two problems with it:

Interface informs that JSON should begin with 

{
  "company_location_id": 0,
  "currency_code": "string",
  "delivery_method": 0,
  "bank_code": "string",
  "rf_reference": "string",
  "agreed_due_date": "2026-02-03T08:38:56.924Z",
  "cash_amount": 0,
  "cash_amount2": 0,

"rows": [
    {
      "invoice_id": 0,
      "batch_number": 0,
      "delivery_customer_number": 0,
      "delivery_date": "2026-02-03T08:38:56.924Z",
      "order_number": 0,
      "reference": "string",
      "stock_id": 0,
      "person_seller_id": 0,
      "person_number": 0,
      "sizes": [
        {
          "id": 0,
          "row_id": 0,
          "size": "string",
          "ean": "string",
          "amount": 0,
          "dlvr_amount": 0,
          "total_dlvr_amount": 0,
          "sort_order": 0,
          "in_stock": 0
        }
      ],

If I start generating JSON with code

Long ll_RootObject, ll_ChildObject, ll_ChildArray
JsonGenerator lnv_JsonGenerator
string ls_Json
lnv_JsonGenerator = create JsonGenerator// Create an object root item

ll_ChildObject = lnv_JsonGenerator.AddItemObject(ll_RootObject, "object")
ll_RootObject = lnv_JsonGenerator.CreateJsonObject ()// Add an Object child item
ll_ChildObject = lnv_JsonGenerator.AddItemObject(ll_RootObject, "object")
lnv_JsonGenerator.AddItemString(ll_ChildObject, "company_location_id", "0")
lnv_JsonGenerator.AddItemDate(ll_ChildObject, "agreed_due_date", today())
lnv_JsonGenerator.AddItemString(ll_ChildObject, "delivery_customer_name", 'John Doe')

It results :

{"object":{"company_location_id":"0","agreed_due_date":"10-02-2026","delivery_customer_name":"John Doe"},"rows":[]}

PB demands that I create ItemObject with ll_ChildObject = lnv_JsonGenerator.AddItemObject(ll_RootObject, "object") and give name for it. Is there any way to create JSON without it or should I remove it with string functions afterward?

Secondly lnv_JsonGenerator.AddItemDate(ll_ChildObject, "agreed_due_date", today()) creates date formatted according to the Windows regional settings. Windows regional setting gives date in format 03.02.2026. Is there any way to convert this date value to format 2026-03-02 other than with string functions afterwards?

Third : Is there any other method generating the JSON preventing these problems?

And finally : Any advice how to set values to rows and sizes?

BR, Hannu

 

Ribbon Bar with some issue Reg: DATAWINDOW JSON
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