exportCallback won't fire

[TomMancine]

Hi. I'm trying to use server-side export from FusionCharts v3.

 

 

 

I have read the documentation carefully, and am using the following export-related parameters:

 

exportHandler: the URL of my sample page

 

exportEnabled: 1

 

exportAtClient: 0

 

exportAction: 'save'

 

 

 

I have tried specifying a value for the exportCallback parameter, but it doesn't seem to work; my callback is never invoked. Additionally, the default callback (FC_Exported) does not seem to be getting fired, whether or not I remove my exportCallback parameter from the chart.

 

 

 

Finally, when I sniff the POST to the server with Fiddler, I see exportCallback=undefined in the pipe-delimited list of parameters being posted. This does not seem to bode well.

 

 

 

Note that when I create my chart, I am making sure that registerWithJS is set to '1', so that is not the source of the problem.

 

 

 

Any ideas why my callback isn't firing? Even if there were some sort of problem on the server side, it seems to me that my callback should still be executed, with error codes to indicate that something has gone wrong.

 

 

 

-Tom Mancine

[FusionCharts Support]

Hi,

 

 

 

Could you please also sniff the response from the server?

 

Please let us know the server side script that you are using.

[TomMancine]

The response from the server is currently an HTTP/405 because I haven't pointed it at a valid handler yet. I had been assuming that since the result object contained success/failure information, it would recover gracefully from a failed request and fire the callback with a status indicating that the post had failed. If that's not the case, I can continue implementing the handler (we need a slightly different behavior--we want the files placed in the ASP.Net session instead of on the filesystem) and hope that the callback will fire after that's done, but it seems like a long way to go without knowing that the callback will fire.

 

 

 

-Tom Mancine

[FusionCharts Support]

Hi,

 

 

 

I am afraid, on error like this the callback event wont file.

[fusionjohn]

I have a fully operational exportCallback using Radar.swf on my local server.  I have just moved everything to the production server and whilst the JPEG's are being saved correctly to disk, the function defined in exportCallback is not being fired.

The production server is https, could this cause a problem?

I tried using FC_Exported(objRtn) and my own function name but this makes no difference.

I noticed that the images seem to take longer to save on the production server, is there any sort of timeout which could be failing before exportCallback is fired?

[Rahul Kumar]

Hi John,

 

 

 

I am afriad, we could not find any issue with this in our labs. We tested it with both HTTPS and HTTP server and it is working fine. And there is no any 'timeout' mechanism in exporting, the exportCallback function will get fired as soon as file gets saved at server.

[fusionjohn]

I have 1 or more radar.swf's on a page.  I call exportChart() for each if hasRendered() is true.  Each then calls the same exportCallback function and maintains a count - when all have called the exportCallback I go on to do other things.  Could the multiple calls cause the problem?

As before - this all works offline.

[fusionjohn]

Any reply on this?

[FusionCharts Support]

I hope there wont be any problem.

[fusionjohn]

fusionjohn (11/24/2009)

---

I have 1 or more radar.swf's on a page.  I call exportChart() for each if hasRendered() is true.  Each then calls the same exportCallback function and maintains a count - when all have called the exportCallback I go on to do other things.  Could the multiple calls cause the problem?

Not sure how that answers my question.  Could the multiple calls cause the problem?

Edited December 2, 2009 by Guest

[FusionCharts Support]

Hi John,

There wont be any issue with 2 or more charts in a page. Could you please check whether the callback is working when you have a single chart in a page.

The issue might be something else.

Could you please send a live URL to the export component or your application so that we can test it from our labs live?

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