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I have a stock chart where I'm showing values from two years for comparison.  In my json, I have a field that shows the delta between the two values, ((thisyear - lastyear) / lastyear)

The problem I have is when the user zooms out of the chart, the delta gets aggregated incorrectly.

I want to know if I can create a series and add the formula that I showed, and have the chart calculate the delta instead of adding it to the json object.
Jonathan Travis
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Rank 1
 answered on 26 Mar 2014
11 answers
1.7K+ views

We have a datasource that has groups and aggregates specified.

dataSourcePipeline = new kendo.data.DataSource({             
    transport: {
        read: {
            url: "/Market/Pipeline",
            dataType: "json",
            type: "get",
            cache: true,
            data: {
                zip: zip
            }
        }
    },
    group: { field: "Stage", dir: "desc", aggregates: [
                { field: "PropertyName", aggregate: "count" },
                { field: "Area", aggregate: "sum"}]
    },
    aggregate: [ { field: "PropertyName", aggregate: "count" }, { field: "Area", aggregate: "sum" } ],
    sort: { field: "Area", dir: "desc" }
});

We have a grid bound to that datasource and is configured to allow grouping. Further, we have specified a groupFooterTemplate for one of the columns that displays the aggregate.

$("#marketPipeline").kendoGrid({
     dataSource: dataSourcePipeline,
     groupable: true,
     scrollable: false,
     sortable: { mode: "multiple" },
     filterable: true,
     columns: [
             { field: "PropertyName", title: "Property Name", template: '<div style="cursor: pointer;" class="pipelinePopupTrigger" rel="#=ID#"><img src="/Content/images/mapIcon.png" height="20" style="cursor: pointer; padding-right: 10px;" title="Show on map" onClick="CenterMap(#=Lat#,#=Lng#,\'PIPELINE\',\'#=ID#\')"/> #=PropertyName#</div>',
                 footerTemplate: "Total Count: #=count#", groupFooterTemplate: "Count: #=count#"
              },
             { field: "Address", title: "Address" },
             { field: "City", title: "City" },
             { field: "ZipCode", title: "Zip Code", width: 100,
                 footerTemplate: "<span style='float:right'>Total Area:</span>",
                 groupFooterTemplate: "<span style='float:right'>Area</span>"
              },
             { field: "Area", title: "Area", template: '<span style="float:right">#= kendo.toString(Area,"N0") #</span>', width: 100,
                 footerTemplate: "<span style='float:right'>#= kendo.toString(sum,'N0') #</span>",
                 groupFooterTemplate: "<span style='float:right'>#= kendo.toString(sum,'N0') #</span>"
             },
             { field: "Subclass", title: "Sub-Class" },
             { field: "Stage", title: "Stage", width: 200 }
         ]
 });

Everything works well until the user removes all groups for the grid. Once they drag a new column to the group area, the grid fails with this error:

count is not defined
/Scripts/kendo/kendo.web.min.js
Line 10

Thoughts?

Alexander Valchev
Telerik team
 answered on 26 Mar 2014
5 answers
299 views
For many reasons I am using a tab strip as action buttons on a form instead of buttons.

First question:

I want to be able to deselect a tab once I have called its action.  For example I have the following snippet.

      <div data-role="footer">
            <div data-role="tabstrip" id="tabstrip" data-select="onTabSelected">
                <a data-icon="home">Save</a>
                <a data-icon="info">Previous</a>
                <a data-icon="details">Next</a>
                <a data-icon="camera">Scan</a>
            </div>
        </div>

And here is the select event

        function onTabSelected(e)
        {
            var index = $(e.item).index();

            console.log("tab index="index);

            if(index == 1)
            {
                    // do something
            }
            else if(index == 2)
            {
                    // do something
            }

            // deselect the tab item so the user can select it again and fire the select event

            return;
        }

Second question:

Can I use standard jquery icons like data-icon="ui-icon-carat-1-e"

Thanks in advance 





Shawn
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 answered on 26 Mar 2014
6 answers
216 views
Kendo docs is a nice looking site ... http://docs.kendoui.com/getting-started/changes-and-backward-compatibility

I thought now if I can just make my Kendo Web UI site work like this I'll get a pay rise for sure!

Seems though that each treenode selection triggers a postback and so the entire page is returned along with lots of ugly viewstate.

So now I'm thinking .... how can I use the Kendo UI treeview like this as a page navigator and have it's state persist across postbacks? Do I need to have my "content" page in a frame?
Daniel
Telerik team
 answered on 26 Mar 2014
6 answers
273 views
When a column filter is set to a dropdownlist but no option label is set hitting filter does not filter the grid until the dropdownlist value is changed.  http://trykendoui.telerik.com/ojUV
Ryan
Top achievements
Rank 1
 answered on 26 Mar 2014
1 answer
149 views
After scrolling the window datetimepicker trigger close event immediately after open http://demos.telerik.com/kendo-ui/web/datetimepicker/index.html
Georgi Krustev
Telerik team
 answered on 26 Mar 2014
3 answers
177 views
Greetings,

I just published one of our web apps to a testing server to test the upgrade from 2013.3.1316 --> 2014.1.318. It looks good for the most part. I have found one issue I can not explain. In 2013.3.1316, the application rendered great for ie8,ie9,ie10,ie11, chrome and Firefox. After the latest update it seems all of the browser versions except ie9 are rendering correctly. There seems to be something off with the styling for ie9 standard mode. I have attached a few screenshots.

Thanks
Ross B.
Top achievements
Rank 1
 answered on 26 Mar 2014
1 answer
82 views
I need to subscribe my external edit template to grid edit, in order my update and cancel buttons work, but I don't know how to do it. Any help?

In the attached code I rendered all the information I need and how I wanted it,  but when I click in the update or cancel button, nothing happens.



Daniel
Telerik team
 answered on 26 Mar 2014
2 answers
89 views
We are binding the kendo grid widget to a dataset where columns are identified only by an index (their definitions/content are dynamic and are known only at runtime).

We use the following approach to bind columns:
for (var i = 0; i < 5; i++) {
    var entryIndex = "entries[" + i + "]";
    columns.push({
        field: entryIndex,
        title: "Column " + i
    });
}

Which is a mechanism that is used by others as well.

We just noticed that this approach breaks when aggregates(footerTemplate) are defined on such columns.

Example of such behavior (please uncomment marked code)

Is this a bug that can be fixed in kendo code? 
Is there a workaround you can suggest?

Thanks.

Alexander Popov
Telerik team
 answered on 26 Mar 2014
3 answers
165 views
Hi,

I've an unordered list of items which is convert to a Treeview. I want my tree to be have drag and drop functionality as well as check-boxes to unable multiple selection. Drag and drop is working perfectly but when i try to use check-boxes, check-boxes just dont show up. Due to project complexity i can't use data source to bind to treeview, it has to be unordered list. The List is not static, items are added at runtime. Kendo version used: 2013.2.716

Below is the sample code:
<div id="example" class="k-content">
            <div class="demo-section">
                <ul id="treeview">
                    <li data-expanded="true">
                        <span class="k-sprite folder"></span>
                        My Web Site
                        <ul>
                            <li data-expanded="true">
                                <span class="k-sprite folder"></span>images
                                <ul>
                                    <li><span class="k-sprite image"></span>logo.png</li>
                                    <li><span class="k-sprite image"></span>body-back.png</li>
                                    <li><span class="k-sprite image"></span>my-photo.jpg</li>
                                </ul>
                            </li>
                            <li data-expanded="true">
                                <span class="k-sprite folder"></span>resources
                                <ul>
                                    <li data-expanded="true">
                                        <span class="k-sprite folder"></span>pdf
                                        <ul>
                                            <li><span class="k-sprite pdf"></span>brochure.pdf</li>
                                            <li><span class="k-sprite pdf"></span>prices.pdf</li>
                                        </ul>
                                    </li>
                                    <li><span class="k-sprite folder"></span>zip</li>
                                </ul>
                            </li>
                            <li><span class="k-sprite html"></span>about.html</li>
                            <li><span class="k-sprite html"></span>contacts.html</li>
                            <li><span class="k-sprite html"></span>index.html</li>
                            <li><span class="k-sprite html"></span>portfolio.html</li>
                        </ul>
                    </li>
                </ul>
            </div>
            <script>
                $(document).ready(function () {
                    $("#treeview").kendoTreeView({
                        dragAndDrop: true,
                        checkboxes: {
                            checkChildren: true
                        }
                    });
                });
            </script>
        </div>
Alexander Popov
Telerik team
 answered on 26 Mar 2014
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