How use PostAsync? FK / MasterDetail

[Araujo_Adan]

Insert record Master/Detail o FK with PostAsync

XDOrderMaster.Active := True;
XDOrderMaster.Append;

(more fields)

XDOrderMaster.Post;

jsonString := XDOrderMaster.CurrentData;

jsonString := {this variable contain my json string) --> I get from a Dataset
but have some FK

How build
"Store@xdata.ref": "Store(1)",

jsonObject := TJSObject.new;
jsonObject := TJSJSON.parseObject(jsonString) as TJSObject;

await(WMLabStore.XDataLabEngine.OpenAsync);
Response3 := await(WMLabStore.XDWebClient.PostAsync('OrderMaster', jsonObject ));

[wlandgraf (Wagner Landgraf)]

Sorry, but your question is really confusing. I cannot understand what you want to achieve. Do you have a sample, or can you explain in more details what your code does (or should do), what is "Store", what is "OrderMaster",, what is "XDataLabEngine", what error or wrong behavior you get, etc.)?

[Araujo_Adan]

Dear Wagner

Sorry my confusion question...
I prepare a test case sample with a video.
TextCase.zip (121.3 KB)

The test case contain a XData Server and Web Client.
Video explain https://youtu.be/SqAK2W9dQq8

[wlandgraf (Wagner Landgraf)]

Thank you for the project and video. The server returned the error:

Expected BeginArray but was Null at path $.Items

So to solve it you should initialize the Items field with an empty array:

  XDOrderMasterItems.Value := TJSArray.new;

[Araujo_Adan]

Work perfectly!!!
Thank you.