(Delphi ActiveX) Shopify Set inventory levels to a certain amount

Use the set endpoint with the location ID and inventory item ID to set an inventory level to a specific value.

For more information, see https://shopify.dev/tutorials/manage-product-inventory-with-admin-api#update-inventory-levels-for-a-product-variant

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: TChilkatHttp;
jsonRequestBody: TChilkatJsonObject;
url: WideString;
resp: IChilkatHttpResponse;
jsonResponse: TChilkatJsonObject;
inventory_levelInventory_item_id: Integer;
inventory_levelLocation_id: Integer;
inventory_levelAvailable: Integer;
inventory_levelUpdated_at: WideString;
inventory_levelAdmin_graphql_api_id: WideString;

begin
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

http := TChilkatHttp.Create(Self);

http.Login := 'SHOPIFY_PRIVATE_API_KEY';
http.Password := 'SHOPIFY_PRIVATE_API_KEY';

// Also see: How to retrieve inventory levels

http.Accept := 'application/json';

// The following JSON is sent in the request body:

// {
//   "location_id": 6884556842,
//   "inventory_item_id": 12250274365496,
//   "available": 1
// }

// Use this online tool to generate the code from sample JSON: 
// Generate Code to Create JSON

jsonRequestBody := TChilkatJsonObject.Create(Self);
jsonRequestBody.UpdateInt('location_id',6884556842);
jsonRequestBody.UpdateInt('inventory_item_id',12250274365496);
jsonRequestBody.UpdateInt('available',1);

url := 'https://{shop}.myshopify.com/admin/api/2020-04/inventory_levels/set.json';

resp := http.PText('POST',url,jsonRequestBody.Emit(),'utf-8','application/json',0,0);
if (http.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Response Status Code: ' + IntToStr(resp.StatusCode));

jsonResponse := TChilkatJsonObject.Create(Self);
jsonResponse.Load(resp.BodyStr);
jsonResponse.EmitCompact := 0;
Memo1.Lines.Add(jsonResponse.Emit());

if (resp.StatusCode >= 300) then
  begin
    Memo1.Lines.Add('Failed.');

    Exit;
  end;

// Sample output...
// (See the parsing code below..)
// 
// Use the this online tool to generate parsing code from sample JSON: 
// Generate Parsing Code from JSON

// {
//   "inventory_level": {
//     "inventory_item_id": 12250274365496,
//     "location_id": 6884556842,
//     "available": 1,
//     "updated_at": "2018-06-26T15:44:33-04:00",
// ...
//     "admin_graphql_api_id": "gid://shopify/InventoryLevel/6485147690?inventory_item_id=12250274365496"
// ...
//   }
// }
// 

inventory_levelInventory_item_id := jsonResponse.IntOf('inventory_level.inventory_item_id');
inventory_levelLocation_id := jsonResponse.IntOf('inventory_level.location_id');
inventory_levelAvailable := jsonResponse.IntOf('inventory_level.available');
inventory_levelUpdated_at := jsonResponse.StringOf('inventory_level.updated_at');
inventory_levelAdmin_graphql_api_id := jsonResponse.StringOf('inventory_level.admin_graphql_api_id');
end;