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I'm trying to copy from one JSON to second object type array (named 'items'). However, when copying, the second JSON always creates only an empty 'items' field with no items (lenght 0) . Please advise

FSobj := TSuperObject.ParseFile( wBaseJSON, True);
if Assigned(FSobj) then
begin
   ...                         
   wObjItems := FSobj.o[ID].o['items'];
   if not(Assigned(wObjItems)) then
   begin
      wSobjDet := TSuperObject.ParseFile( wJsonsDetFolder + ID + '.json', True);
      if Assigned(wSobjDet) then
      begin
         if Assigned(wSobjDet.A['items']) then 
         begin
            FSobj.o[ID].o['items'] := SA([]);
            for It := 0 to wSobjDet.O['items'].AsArray.Length-1 do
               FSobj.o[ID].A['items'].add(wSobjDet.O['items'].AsArray[it]);
         end;
      end;
   end;
end;
                       

wSobjDet.O['items'].AsArray.Length = 20 (each record in the array has a different type - string, object, integer...)

Newly created FSObj gets only empty array 'items' - length=0 (checked via txt)

What am I doing wrong?

(I've shortened and edited the code to make it more readable, but the procedure - going through the existing fields record by record and assigning them to the new one - is in the code.)

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  • 3
    Logically it makes no sense to treat the property 'items' once as object (.O) and once as array (.A) - that's mutually exclusive: an object consists of pairs of key=value, while an array consists of elements only. That's also the reason why the former is treated in JSON with curly brackets ({}) and the latter with square brackets ([]). Include an example of the JSON to process. Commented Jun 4, 2021 at 12:11

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