Pascal (Lazarus/Delphi)

Shopify Update Inventory Level for a Product (Adjust available quantity)

See more Shopify Examples

Use the adjust endpoint with the location ID and inventory item ID to increase or decrease the available quantity for an inventory level: Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Http,
  Chilkat.HttpResponse,
  Chilkat.JsonObject;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  http: THttp;
  jsonRequestBody: TJsonObject;
  url: string;
  resp: THttpResponse;
  jsonResponse: TJsonObject;
  inventory_levelInventory_item_id: Integer;
  inventory_levelLocation_id: Integer;
  inventory_levelAvailable: Integer;
  inventory_levelUpdated_at: string;
  inventory_levelAdmin_graphql_api_id: string;

begin
  success := False;

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

  http := THttp.Create;

  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_adjustment": 1
  //  }

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

  jsonRequestBody := TJsonObject.Create;
  jsonRequestBody.UpdateInt('location_id',6884556842);
  jsonRequestBody.UpdateInt('inventory_item_id',12250274365496);
  jsonRequestBody.UpdateInt('available_adjustment',1);

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

  resp := THttpResponse.Create;
  success := http.HttpJson('POST',url,jsonRequestBody,'application/json',resp);
  if (success = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  WriteLn('Response Status Code: ' + resp.StatusCode);

  jsonResponse := TJsonObject.Create;
  jsonResponse.Load(resp.BodyStr);
  jsonResponse.EmitCompact := False;
  WriteLn(jsonResponse.Emit());

  if (resp.StatusCode >= 300) then
    begin
      WriteLn('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": 9,
  //      "updated_at": "2018-06-26T15:04:49-04:00",
  //  ...
  //      "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');


  http.Free;
  jsonRequestBody.Free;
  resp.Free;
  jsonResponse.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.