PagedView and empty dataset

Question

Hello,
I am using PagedView to display my data and getPagingInfo()
for accessing pages directly.
My code looks like this:
var dsItems = new Spry.Data.XMLDataSet(sDataSetUrl, 'root'');
var pvItems = new Spry.Data.PagedView(dsItems, {pageSize:
20});
var pvInfo = pvItems.getPagingInfo();
<span spry:region="pvItems" spry:state="ready"
spry:if="{ds_PageNumber} > 1"><a href="#"
onclick="pvItems.previousPage()">Previous
Page</a></span>
Executing this with an
empty xml dataset I get the following error:
Caught exception in Spry.Data.Region.prototype.processTokens
while evaluating: > 1 Exception:SyntaxError: syntax error
ds_PageNumber seems to be empty.
How to fix this?
Best regards,
Tobias

Answer 1

yes, the master dataset is empty, too.
I had a look at SpryPagedView.js (from Spry 1.5). There are
only two positions where I found ds_PageNumber:
1) Spry.Data.PagedView.prototype.updatePagerColumns():
If there are no datasets numRows is zero and ds_PageNumber
is not defined
2) Spry.Data.PagedView.PagingInfo.prototype.extractInfo():
numRows is zero, ds_PageNumber not defined
For me it seems a bit like a bug.