Hi Joost,
The error is in my javascript, because the response in my javascript is
empty, but a full JSONArray is returned in my java code.
It looks like somewhere between these steps the response gets empty.
Anyone an explanation?
Here is some code:
/*
*Java script
*/
function fillSubCategories(response) {
selectElement = $('subCategorySelect');
clearSelectOption(selectElement);
var responseJSON = response.evalJSON();
for (index = 0; index < responseJSON.length; index++) {
selectElement.options[index] = new
Option(responseJSON[index].label, responseJSON [index].value);
}
Tapestry.ElementEffect.highlight($('subCategorySelect'));
}
/*
*Java page
*/
@OnEvent(component = "rootCategorySelect", value = "change")
JSONArray onCategorySelectChanged(String categoryId) {
JSONArray jsonArray = new JSONArray();
if (StringUtils.hasLength(categoryId)) {
try {
List<Category> subCategories =
categoryService.getSubCategoriesForCategory(Long.valueOf(categoryId));
for (Category subCategory : subCategories) {
JSONObject jsonObject = new JSONObject();
jsonObject.put("value", subCategory.getId().toString());
jsonObject.put("label", subCategory.getName());
// put the jsonobjects into an array, to maintain the
sorted
// order.
jsonArray.put(jsonObject);
}
}
catch (Exception ex) {
logger.error(ex);
}
}
return jsonArray;
}
On Thu, Mar 12, 2009 at 12:19 PM, Joost Schouten (mailing lists) <
joost...@jsportal.com> wrote:
> Do you get an error on your server or in javascript? Because I too
> have been having problems with the JSONResponse.
> transport.responseJSON in my javascript is sometimes null. For some
> weird reason the problem resolved itself when using shorter variable
> names (scarry). Haven't had the time to look into it but maybe it is
> related.
>
> Just thought I'd share,
> Joost
>
> On Thu, Mar 12, 2009 at 7:05 PM, Peter Kanze <peterka...@gmail.com> wrote:
> > Hello
> >
> > I had implement a depended select box. This works fine in T 5.0.18. But
> > after I upgrade to 5.1 the dependent select doesn't work anymore.
> > Only sometimes. It seems that the response is sometimes filled correctly,
> > but most of the time it is empty. I then mostly get the error "Badly
> formed
> > JSON String"
> >
> > Can someone explain to me why this isn't working in T5.1 and how I can
> fix
> > this again?
> >
> > Thanks!
> > Peter
> >
>
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