Hello people!,
Im facing this problem:

var
  fTransPeliculas: TJSIDBTransaction;
  fTransAlmacen  : TJSIDBObjectStore;
  fSolicitud     : TJSIDBRequest;
begin
  (......)
  fTransPeliculas   :=  gMyDB.transaction(['peliculas'],'readwrite');
  fTransAlmacen     :=  fTransPeliculas.objectStore('peliculas');
  gInfo.clave       :=  gedtClave.value;
  gInfo.anno        :=  gedtFecha.value;
  gInfo.texto       :=  gedtTexto.value;
  fSolicitud        := fTransAlmacen.add(gInfo,'clave');

but from browser consola I recieve the message:
DataError: Data provided to an operation does not meet requirements.

but when use this alternative....
asm
fSolicitud =
fTransAlmacen.add({id:$mod.gInfo.clave,nombre:$mod.gInfo.texto,fecha:$mod.gInfo.anno});

  end;

everything works!!!!
perhaps fSolicitud := fTransAlmacen.add(gInfo,'clave'); is incorrepts ...then how it will be OK?

Thanks
pp

first of all, you are doing things very differently
- your asm code does not provide a key, your pascal code does.
- the structure of the object you are saving is very different.

Secondly, to know why it goes wrong, we need to know what is the definition of the object store.

Maybe this answers your question:
https://stackoverflow.com/questions/36016862/indexeddb-dataerror-data-provided-to-an-operation-does-not-meet-requirements

Michael.

Yes, you all right!...I am try it ....my problem :
...for example...I declare >>>>>
type
  gsolicitud    : TJSIDBOpenDBRequest;
   gMyDB       : TIDBDatabase;
function fOpenDB(aEvent: TEventlistenerEvent): Boolean;
begin
(* inside event handler I need get params retorned from request   *)
gMyDB  := aEvent.target; <==== but this does not works for me
gMyDB  := gsolicitud.resultAsDatabase; <==== so I must try this !!! :-( but
it is not correct!
end;
begin
  ......
  gsolicitud  := Window.indexedDB.open(gDBName,4);   <<<< I requesting for
this event
  gsolicitud.onsuccess := @fOpenDB;                            <<< and set
this function to handles this event
  ......
end;

When I go to the event handler function I try get params returned through aEvent.target ( gMyDB := aEvent.target; ) but compiler tells type missmacthed!, then I just try solve it do some thing like this ( gMyDB := gsolicitud.resultAsDatabase; )....it is not just in this case ...it happend to me always that I need recover a param inside of an event handler function...so if some one has an answer about it please illustrate me..THANKS

El sáb., 21 sept. 2019 a las 12:17, Michael Van Canneyt (<

You must typecast this, this is always so.

Just like in Delphi/FPC the Sender :TObject is used as a generic sender, event.target is also very generic. So you must always do

gMyDB  := TIDBDatabase(aEvent.target);

That is normal.

Michael.

just this??!!!!....ok let's go!!

Thanks a lot!!!!

El mié., 2 oct. 2019 a las 12:46, Michael Van Canneyt (<