Pascal (Lazarus/Delphi)

Shopify Retrieve the item's inventory levels

See more Shopify Examples

After you have the inventory item ID, you can use it with the InventoryLevel resource to find the levels and locations for the inventory item: 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;
  resp: THttpResponse;
  jsonResponse: TJsonObject;
  inventory_item_id: Integer;
  location_id: Integer;
  available: Integer;
  updated_at: string;
  admin_graphql_api_id: string;
  i: Integer;
  count_i: Integer;

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';

  http.Accept := 'application/json';

  //  How to get the inventory item ID

  resp := THttpResponse.Create;
  success := http.HttpNoBody('GET','https://{shop}.myshopify.com/admin/api/2020-04/inventory_levels.json?inventory_item_ids={inventory_item_id}',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 <> 200) 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_levels": [
  //      {
  //        "inventory_item_id": 12250274365496,
  //        "location_id": 6884556842,
  //        "available": 8,
  //        "updated_at": "2018-06-18T11:49:50-04:00",
  //        "admin_graphql_api_id": "gid://shopify/InventoryLevel/6485147690?inventory_item_id=12250274365496"
  //      },
  //      {
  //        "inventory_item_id": 12250274365496,
  //        "location_id": 13968834616,
  //        "available": 50,
  //        "updated_at": "2018-06-26T14:44:30-04:00",
  //        "admin_graphql_api_id": "gid://shopify/InventoryLevel/13570506808?inventory_item_id=12250274365496"
  //      },
  //      {
  //        "inventory_item_id": 12250274365496,
  //        "location_id": 13968867384,
  //        "available": 100,
  //        "updated_at": "2018-06-26T14:44:30-04:00",
  //        "admin_graphql_api_id": "gid://shopify/InventoryLevel/13570539576?inventory_item_id=12250274365496"
  //      }
  //    ]
  //  }
  //  

  i := 0;
  count_i := jsonResponse.SizeOfArray('inventory_levels');
  while i < count_i do
    begin
      jsonResponse.I := i;
      inventory_item_id := jsonResponse.IntOf('inventory_levels[i].inventory_item_id');
      location_id := jsonResponse.IntOf('inventory_levels[i].location_id');
      available := jsonResponse.IntOf('inventory_levels[i].available');
      updated_at := jsonResponse.StringOf('inventory_levels[i].updated_at');
      admin_graphql_api_id := jsonResponse.StringOf('inventory_levels[i].admin_graphql_api_id');
      i := i + 1;
    end;



  http.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.