Append some random noise to the download URL. See NonCaching image as
example.
On Thu, Jul 31, 2014 at 3:24 PM, Entropy <blmulholl...@gmail.com> wrote:
> We have an ajax button that submits a form that, if the parameters are
> right,
> will download an excel file. The developers who wrote the page used an
> ajax
> behavior and then write the request out as javascript like so:
>
> target.appendJavaScript((CharSequence) ("window.location.href='" +
> getCallbackUrl() + "';"));
>
> After building the byte array resource and sticking it in place via:
>
> getComponent().getRequestCycle().scheduleRequestHandlerAfterCurrent(new
> ResourceRequestHandler(rptRS, null));
>
> The problem with this is that when a person changes the parameters and
> resubmits the form to get a different dynamically generated excel, there's
> some caching in play and they get the same one they downloaded earlier.
>
> We put getResourceSettings().setDefaultCacheDuration(Duration.NONE); in the
> application init and it seemed to solve it. But setting to no cache for
> the
> whole app seems like overkill. We'd like to set it for this one download.
> I've seen forum posts that suggest there is a setCacheDuration on some
> specific objects, but none of the ones I seem to try.
>
> How would I set the cache to none for THIS object/URL?
>
> --
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--
Regards - Ernesto Reinaldo Barreiro
