PullToRefresh argument undefined

[Bastien]

Hi,

I've a problem with the 'pullToRefresh' feature of the mobile listview.

$("#posts").kendoMobileListView({

                    pageSize: configPageSize,

                    dataSource: ds,

                    template: kendo.template($("#tmpl-post").html(), {useWithBlock:true}),

                    endlessScroll: true,

                    scrollTreshold: 30, //treshold in pixels

                    appendOnRefresh: true,

                    pullToRefresh: true,

                    pullParameters: function(item) {

                        //additional parameters

                        return {

                            since: item.CreatedOn,

                            page: 1

                        };

                    },

                    click: function(e) {

                        //writeLog($(e.target).closest('li').attr('id'));

                    }

                });

'item' parameter of pullParameters function is UNDEFINED. Why is this happening? Am I doing something wrong? 

Thanks for help.
Bastien

[myTeamWorks]

any idea?

[Georgi Krustev]

Hi,

 
The argument passed to the pullParameters callback is the first item of the ListView. If the ListView is empty then the item can be undefined. I will suggest you check whether the item exists:

pullParameters: function(item) {
    var CreatedOn;
    if (item) {
         CreatedOn = item.CreatedOn;
    }

    return {
         since: CreatedOn,
         page: 1
    };
},

Kind regards,
Georgi Krustev
the Telerik team

[myTeamWorks]

Hi Georgi,

Thanks for your answer but my ListView is not empty and item is still undefined.

I think I've some problem with the DataSource because if I do this:

$("#posts").data("kendoMobileListView").items(0)

I can see all the items in my listview.

BUT, if I do this:

$("#posts").data("kendoMobileListView").dataSource.get(0);

it returns nothing. Even .dataSource.Total() returns 0...

How can the DataSource be empty and not the listview?

Thanks for help.
Bastien

[Georgi Krustev]

Hello again,

 
The items method returns all LI elements of the ListView and does not accept any parameters. I will need a simple test page (jsBin/jsFiddle), which replicates the issue. Thus I will be able to investigate the problem and advice you further.

Regards,
Georgi Krustev
the Telerik team