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5 answers
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In documentation it writes, that kendo.Observable inherits from kendo.Class. In documentation for Class I read "The base class of most Kendo objects. Provides simple inheritance support".

So with the upper statements this should work:
<div id="main">
    <div data-bind="html: value"></div>
    <div data-bind="html: value2"></div>
</div>
 
<script>
     
    var MVVM1 = kendo.observable(
            {
                value: "bla",
            });
 
    var MVVM2 = MVVM1.extend(
            {
                value2: "bla2",
            });
     
    kendo.bind($('#main'), this.MVVM2);
 
</script>
but it doesn't. 
Is there any way to inherit with MVVM? In my SPA I could share some MVVM and I don't want to duplicate code.
Insad
Top achievements
Rank 2
 answered on 09 Nov 2017
7 answers
1.6K+ views

Is there a limit on the number of rows you can export from the spreadsheet into excel?

Im having trouble with 15,000 rows, 31 columns.

Thanks

Veselin Tsvetanov
Telerik team
 answered on 08 Nov 2017
2 answers
661 views

I have multiselect field in grid with inline editing. When I enter 1st time edit mode, everything displays correct. but when I enter 2nd and more, selected values in multiselect box dissapear, but they are staying selected in dropdown list. How can I fix it?

Code below:

function authorMultiSelectEditor(container, options) {
    indexAuthor = options.model.Id
    $('<select data-bind="value:' + options.field + '"/>')
        .appendTo(container)
        .kendoMultiSelect({
            filter: "startswith",
            suggest: true,
            autoBind: false,
            valuePrimitive: true,
            dataTextField: "Name",
            dataValueField: "Id",
            dataSource: auhors,
            select: onSelectAuthor,
            deselect: onDeselectAuthor
        });
};
    let datasource = new kendo.data.DataSource({
        transport: {
            read: function (e) {
                $.ajax({
                    type: "GET",
                    url: '/Book/Index',
                    contentType: "application/json; charset=utf-8",
                    dataType: "json",
                    success: function (data) {
                        e.success(data);
                    },
                    error: function (data) {
                        e.error("", "400", data);
                    }
                });
            },
 
            update: function (e) {
                var postData = new createUpdatedBook(e.data);
                $.ajax({
                    type: "POST",
                    url: '/Book/Update',
                    contentType: "application/json; charset=utf-8",
                    dataType: "json",
                    data: JSON.stringify(postData),
                    success: function (data) {
                        $('#grid').data('kendoGrid').dataSource.read();
                        $('#grid').data('kendoGrid').refresh();
                    },
                    error: function (data) {
                        $('#grid').data('kendoGrid').dataSource.read();
                        $('#grid').data('kendoGrid').refresh();
                        e.error("", "400", data);
                    }
 
                });
            },
 
            create: function (e) {
                var postData = e.data;
                $.ajax({
                    type: "POST",
                    url: '/Book/Insert',
                    contentType: "application/json; charset=utf-8",
                    dataType: "json",
                    data: JSON.stringify(postData),
                    success: function (data) {
                        e.success(data);
                        $('#grid').data('kendoGrid').dataSource.read();
                        $('#grid').data('kendoGrid').refresh();
                    },
                    error: function (data) {
                        e.error("", "400", data);
                        $('#grid').data('kendoGrid').dataSource.read();
                        $('#grid').data('kendoGrid').refresh();
                    }
 
                });
            },
 
            destroy: function (e) {
                var postData = e.data.Id;
                $.ajax({
                    type: "POST",
                    url: '/Book/Delete/?id=' + postData,
                    contentType: "application/string; charset=utf-8",
                    dataType: "string",
                    data: postData,
                    success: function (data) {
                        e.success(data);
                    },
                    error: function (data) {
                        e.error("", "400", data);
                    }
                });
            }
        },
        batch: false,
        pageSize: 20,
        schema: {
            model: {
                id: "Id",
                fields: {
                    Id: { type: "string", editable: false, },
                    Name: { type: "string", validation: { required: true } },
                    IdPublisher: { type: "string", editable: false },
                    PublisherName: { type: "string", validation: { required: true } },
                    IdAuthor: { type: "string", editable: false },
                    AuthorName: { type: "string", validation: { required: true } },
                }
            }
        },
        change: function (e) {
            if (e.action === "itemchange" && e.field == "PublisherName") {
                var model = e.items[0],
                    currentValue = dataItem.Id;
                if (currentValue !== model.IdPublisher) {
                    model.IdPublisher = currentValue;
                    $("#grid").find("tr[data-uid='" + model.uid + "'] td:eq(3)").text(currentValue);
                }
            }
        },
        requestEnd: onRequestEnd
    });
    
 $("#grid").kendoGrid({
        dataSource: datasource,
        navigatable: true,
        pageable: true,
        height: 550,
        toolbar: ["create", "cancel"],
        columns: [
            { field: "Id", title: "id" },
            { field: "Name", title: "Book Name", width: 400 },
            { field: "Authors", title: "Authors", template: authorMultiTemplate, editor: authorMultiSelectEditor, width: 700 },
            { field: "IdPublisher", title: "IdPublisher" },
            { field: "PublisherName", title: "Publisher", editor: publisherAutoCompleteEditor, width: 300 },
            { command: ["edit", "destroy"], title: " ", width: 300 }],
        toolbar: ["create"],
        editable: "inline",
        dataBound: function (e) {
            this.hideColumn(0);
            this.hideColumn(3);
        }
    });
});

 

Dimitar
Telerik team
 answered on 08 Nov 2017
3 answers
342 views

Hello,

I want to ask, is in spreadsheet can add images on cells?

 

Thanks

Nencho
Telerik team
 answered on 08 Nov 2017
9 answers
553 views

Hi,

I'm currently using your File Uploader widget as part of an edit dialog in a Grid. When uploading I've managed to send a token as part of the header, but I can't get this to work when I'm trying to remove files? I've debugged in to the code and the event-object is missing the "XMLHttpRequest" property. Has this been added in later versions of Kendo(I'm using ) or is there another way I can append said token as part of the header?

My code for the "onUpload" and "onRemove" events are as follows:

01.function onUpload(e) {
02.                            var xhr = e.XMLHttpRequest;
03.                            xhr.addEventListener('readystatechange', function(e) {
04.                                //1 = Opened, append the Authorisation token with the request
05.                                if (xhr.readyState === 1) {
06. 
07.                                    // jscs:disable requireCamelCaseOrUpperCaseIdentifiers
08.                                    xhr.setRequestHeader('Authorization', 'Bearer ' + apiservice.getAccessToken()); //jshint ignore: line
09.                                    // jscs:enable requireCamelCaseOrUpperCaseIdentifiers
10.                                }
11.                            });
12.                        }
13. 
14.                        function onRemove(e) {
15.                            //Send file ids to the server
16.                            //This seems to always contain one file..
17.                            var fileIds = [];
18.                            for (var j = 0; j < e.files.length; j++) {
19.                                fileIds.push(e.files[j].fileid);
20.                            }
21.                            e.data = {fileIds: fileIds};
22.                        }
Plamen
Telerik team
 answered on 08 Nov 2017
2 answers
931 views

Hi.
I have this dropdown

function SomeFilter(element) {

$(element).attr('id', "SOmething");

element.kendoDropDownList(
{
  dataSource: {
    transport: {
      read:
      {
        type: "POST",
        url: "@Url.Action("SomeAction", "SomeController")"
      }
    }
  },
  filter: "contains",
  highlightFirst: true,
  delay: 300,
  optionLabel: "Select Something",
  dataTextField: "dataTextField",
  dataValueField: " dataValueField ",
  select: onSelect,
  dataBound: onDataBound,
  open: onOpen
});
}

that is a filter in my grid

columns.Bound(e => e.SomeValue).Title("SomeTitle").Width(85).Filterable(x => x.UI("SomeFilter").Extra(false));

So far, so good. This all works fine. What I need to need is if there is a way to do the filtering on dataValueField instead of dataTextField.

Rui
Top achievements
Rank 1
 answered on 08 Nov 2017
8 answers
3.6K+ views
i am using kendo grid.
is there any inbuilt API for generate Row Number  Column in kendo Grid.

i tried this way in onGridDataBound Event.

           gridName = gridName == null ? '' : '#' + gridName;
           var dataTable = $(gridName + ' .k-grid-header table');
           var ContentTable = $(gridName + ' .k-grid-content table tr');
           if(dataTable.find('th[role=RowNumber]').length == 0)
           {
              dataTable.first().find('thead tr th:eq(0)').before("<th  width='100px' scope='col' role='RowNumber' >Row Number</th>");
           }
           var hasRowNumber  = ContentTable.first().find('td.rownumber').length == 0 ? true : false;
           ContentTable.each(function(index, row){
                  if(hasRowNumber)
                  {
                    $(row).find('td').first().before("<td title='RowNumber' role='gridcell' class='rownumber' >"+ (index + 1)+"</td>");
                  }
                  else
                  {
                    $(row).find('td.rownumber').html(index + 1);
                  }
          });


but when i change data source client side then it's not working.

please help

Thanks,

Mayank

Dimo
Telerik team
 answered on 08 Nov 2017
1 answer
167 views

I'm working with grids that have a lot of columns.  Using your latest version (2017.3.1026), the 'Columns' menu for any column that is also filterable can no longer be scrolled using a trackpad or scroll wheel.  The dojo example below was copied from the column menu demo: http://demos.telerik.com/kendo-ui/grid/column-menu but more columns were added to demonstrate scrolling.  The undesired behavior can be seen on the first four columns which are filterable.  Beginning with the fifth column, 'Test 2', the 'filterable' property is set to 'false' and scrolling behaves as expected.  This is reproducible in the latest versions of Chrome and Firefox.

 

http://dojo.telerik.com/aQoxa

Stefan
Telerik team
 answered on 08 Nov 2017
1 answer
96 views

Need to show google icons into gantt chart column to see the status of task. Here is my code!

var tasksDataSource = new kendo.data.GanttDataSource({
    data:DS,
        schema: {
            model: {
                id: "id",
                fields: {
                sr: { from: "sr", type: "number" },
                    id: { from: "id", type: "string" },
                    runtimes: { from: "runtimes"},
                    parentId: { from: "parentId", type: "string", defaultValue: null, validation: { required: true } },
                    start: { from: "start", type: "date", format: "{0:MM/dd/yyyy}" },
                    end: { from: "end", type: "date", format: "{0:MM/dd/yyyy}" },
                    diff: { from:"diff", type: "string" },
                    title: { from: "title", defaultValue: "", type: "string" },
                    summary: { from: "summary", type: "boolean" },
                    expanded: { from: "expanded", type: "boolean", defaultValue: true }
                },
                computedRuntimes: function() {if (this.runtimes == JSON.stringify({"included":true,"pending":true,"executed":false}) ) {

x.push("a");

}
if (this.runtimes == JSON.stringify({"included":true,"pending":true,"executed":true}) ) {
x.push("b");
}
if (this.runtimes == JSON.stringify({"included":false,"pending":false,"executed":true}) ) {
x.push("b");
}
if (this.runtimes == JSON.stringify({"included":true,"pending":false,"executed":true}) ) {
x.push("c");
}
return x;
}
            },
        }
    });

Viktor Tachev
Telerik team
 answered on 08 Nov 2017
5 answers
343 views
Is it anyway that display legend title or add legend title?
Marin Bratanov
Top achievements
Rank 1
Iron
 answered on 08 Nov 2017
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