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JSON.encode of an date object

TomSchuller

Hy,
running a JSON.encode on a Date object, it's generating me a non-compatible JSON-format to communicate with the AGS-Rest-api.
Here my JSON string:

{"secondsUTC":14,"date":16,"dayUTC":5,"minutes":33,"fullYear":2010,"millisecondsUTC":493,"month":3,"monthUTC":3,"seconds":14,"minutesUTC":33,"hours":20,"timezoneOffset":-120,"milliseconds":493,"hoursUTC":18,"dateUTC":16,"fullYearUTC":2010,"day":5,"time":1271442794493}

The format used in the AGS-Rest api is the date expressed in ms started from 1 Jan 1970, like this:
http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Earthquakes/Since_1970/MapServer/0/query?text=&geometry=&geometryType=esriGeometryEnvelope&inSR=&spatialRel=esriSpatialRelIntersects&relationParam=&objectIds=1&where=&time=&returnIdsOnly=false&returnGeometry=true&maxAllowableOffset=&outSR=&outFields=*&f=pjson

Is this a bug or what is wrong in my code below?
I'm using the com.esri.ags.utils.JSON, so it should generate the correct format.

The problem is still present in the latest beta library: agslib-2.0BetaUpdate2-2010-04-07

Thanks,
Tom

import com.esri.ags.utils.JSON;
import mx.controls.Alert;
function testJSON():void {
 var myDate:Date= new Date();
 var jsonDateString:String = JSON.encode(myDate);
 Alert.show(jsonDateString);
}

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Accepted answers

All comments

JeffPerkins

Yes, we'll update our encoder to look for Dates and encode them using their time value.

How do I implement the JSON.encode in my flex project? The data field that the REST returns is Thu Jun 03 18:16:36 CDT 2010 and I'd like it to be Jun 03, 2010 18:13.

Thanks

m_d

I'm also running into this issue in a .NET/winforms app that updates a feature service using REST. Since there's no JSON encoding built-in to .NET, creating a JSON-compatible date is cumbersome. Have you given any thought to allowing standardized date strings for these kinds of parameters?

TomSchuller

Great, thanks.

Tom

DasaPaddock

Yes, we'll update our encoder to look for Dates and encode them using their time value.

TomSchuller

Hy,
thanks for the solution.
I'm seeing how simple it is to implements.

We are having already a lot of complex objects using date fields which where transferred with BlazeDS. We are now switching to a customSOE-Rest enabled communication.

Wouldn't it be possible to add this json-date-conversion directly to your JSON.encode method?
So we don't need to edit all our business classes.

Thanks,
Tom

DasaPaddock

Try this:

import com.esri.ags.utils.JSON; 
import mx.controls.Alert;
function testJSON():void {
 var myObject:Object = new Object();
 myObject["label"]="test";
 myObject["myDate"]= new Date().time;
 var jsonDateString:String = JSON.encode(myObject);
 Alert.show(jsonDateString);
}

TomSchuller

Hy,
thanks for your answer.

Taking the case that I have a complex object which contains some date fields.
I will pass my complex object to the JSON.encode method.

How can I do this (see example below)?

Thanks,
Tom

import com.esri.ags.utils.JSON; 
import mx.controls.Alert;
function testJSON():void {
 var myObject:Object = new Object();
 myObject["label"]="test";
 myObject["myDate"]= new Date();
 var jsonDateString:String = JSON.encode(myObject);
 Alert.show(jsonDateString);
}

DasaPaddock

You'll need to set the Date's time property in the object you're encoding.

var now:Date = new Date();
var result:String = JSON.encode({ "date": now.time });

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