Hi,

I'm using the JSONRTTI unit to successfully save an object to a .json file. But when loading that file back using TJSONDeStreamer I get a conversion error due to the Date/Time format.

Here is the code to handle the TDateTime fields of my object - I store them as ISO8601 date/time format.

  js := TJSONStreamer.Create(nil);
  try
    js.Options := [jsoDateTimeAsString];
    js.DateTimeFormat := 'yyyymmdd"T"hhnnss';
    j := js.ObjectToJSON(ASettings);

The problem is, the TJSONDeStreamer doesn't have the equivalent Options property or DateTimeFormat property that TJSONStreamer has, so how is it supposed to know how to handle Date/Time fields? No wonder it gives a Conversion Error.

If I comment out my js.DateTimeFormat line above, then saving and loading works. But I don't want the default DateTime-to-String result.

Any ideas? I'm using FPC 2.6.4.

Regards,
- Graeme -

Graeme Geldenhuys wrote

The problem is, the TJSONDeStreamer doesn't have the equivalent Options property or DateTimeFormat property that TJSONStreamer has, so how is it supposed to know how to handle Date/Time fields? No wonder it gives a Conversion Error.

I had a quick look at FPC 3.0 rc, and it also doesn't have the Options or DateTimeFormat properties for TJSONDeStreamer. So this issue would happen there too.

Regards,
- Graeme -

That's a bug (missing jsoDateTimeAsString in destreamer), please report it in the bugtracker.

Michael.

Michael Van Canneyt wrote

That's a bug (missing jsoDateTimeAsString in destreamer), please report it in the bugtracker.

OK, but against which version of FPC?

Regards,
- Graeme -

Trunk.

Michael.

Michael Van Canneyt wrote

> > OK, but against which version of FPC? Trunk.

Does that mean the upcoming FPC 3.0 will not contain a fix?

Anyway, filed as:
http://mantis.freepascal.org/view.php?id=28721

Regards,
- Graeme -