Questions on Kendo UI for jQuery Forum

0 answers

256 views

Grid memory leak?

I seem to be getting a memory leak on the grid widget. I pasted my code is below. In Firefox 12, when the application first runs up, Windows Task Manager says it is taking up around 60Mb of memory. If you click the add button, the memory used grows to around 85Mb, When you click the remove button, the memory does reduce a bit (after about 30 secs), but it only reduces to around 80Mb.

Is there leak in my code or kendo grid widget?

<!DOCTYPE html>

<html>

<head>

</head>

<body>

<div>

<button id="remove" value="remove">remove</button>

</div>

$(document).ready(function () {

$("#add").click(function () {

var data = [],

sharableDataSource,

i;

for (i = 0; i < 5000; i = i + 1) {

data.push({ field: "value " + i

});

}

sharableDataSource = new kendo.data.DataSource({ data: data });

$("#grid").kendoGrid({

groupable: false,

scrollable: true,

sortable: true,

pageable: false,

resizable: true,

selectable: "row",

dataSource: sharableDataSource,

columns: [{ field: "field", title: "field" }]

}).data("kendoGrid");

data = null;

sharableDataSource = null;

});

$("#remove").click(function () {

$("#grid").empty();

});

</script>

</body>

</html>

Grid

asked on 25 Jun 2012

0 answers

135 views

Show already uploaded files

Hi,
is there a standard way to show already uploaded files and provide a delete button for them?

Upload

asked on 25 Jun 2012

7 answers

521 views

[Solved] Grid Sample

Hi,

Trying to get the basic Grid sample to work. Getting the following errors...

SCRIPT5007: Object expected
kendo.all.min.js, line 1 character 13464
SCRIPT438: Object doesn't support property or method 'kendoGrid'
index.html, line 19 character 2

Here is my HTML - any help is appreciated as I'm sure it is a basic, newbie mistake.

<html>

<head>

<title>Test Kendo</title>

<link href="../js/kendo.common.min.css" rel="stylesheet" type="text/css" />

<link href="../js/kendo.kendo.min.css" rel="stylesheet" type="text/css" />

<script type="text/javascript" src="jquery-1.2.6.min.js"></script>

<script type="text/javascript" src="js/kendo.all.min.js"></script>

</head>

<body>

<div id="grid">

</div>

<script type="text/javascript">

$("#grid").kendoGrid({ columns: [{ field: "FirstName", title: "First Name" }, { field: "LastName", title: "Last Name"}], dataSource: { data: [{ FirstName: "Joe", LastName: "Smith" }, { FirstName: "Jane", LastName: "Smith"}]} });

</script>

</body>

</html>

General Discussions

answered on 25 Jun 2012

1 answer

253 views

Line Series - Break Line

I have a requirement that if the series type of line hits 0 to break the line and continue once the series has another value above 0.

Is this possible? Can I hide certain data points?

Let me know if a visual would help.

Charts

answered on 25 Jun 2012

4 answers

370 views

Dates on the category axis of line chart

Is there some way that I can get DataViz to automatically generate a nice looking axis when using dates on the category axis? It would be helpful if it for instance could choose an appropriate step size etc. automatically.

If this isn't possible I have another question. How do I make it step over some ticks cause I only want ticks where I have labels.

Thanks

Charts

answered on 25 Jun 2012

1 answer

406 views

Is there a way to reload the toolbar?

I have a grid with a custom toolbar, which have dynamical data showed related to data in the grid. When there are changes in the grid, the toolbartext must be updated to the new values.

Is there a way to refresh/reload the toolbar?

Grid

answered on 25 Jun 2012

5 answers

431 views

MVVM with Single Entity from Remote Server

Every sample I can find works on the premise of multiple rows of data coming back.

In our case there is only one row being returned because this is a single item edit screen.

I have a Web API request that returns an object. Here's the response from the call:

{
"FirstName": "James",
"LastOrCompanyName": "Hancock",
"MiddleName": "Robert",
"Salutation": "Mr.",
"Suffix": null,
"Individual": true,
<...more fields...>
}

It's formatted exactly like that with Json.

What I'm attempting to do is put text boxes that allow edit of those values.

Here's what I have:

var Contact = kendo.data.Model.define({
ID: "ID"
});

dataSource = new kendo.data.DataSource({
type: "json", // specifies data protocol
transport: {
read: { url: "/api/v1/contacts/GetContactByID?id=" + ContactID },
},
schema: {
model: {
id: "ID"
}
},
change: function (e) {
selectedContact = e;
},
error: function (e) {
debugger;
}
});

var viewModel = kendo.observable({
dataSource: dataSource,
hasChanges: false,
change: function () {
this.set("hasChanges", true);
}
});

kendo.bind($("#contact-info"), viewModel);

for sake of argument I also bound a grid to the datasource like so:

$("#g-contact-info").kendoGrid({
groupable: true,
scrollable: { virtual: true },
sortable: true,
pageable: true,
dataSource: dataSource
});

The grid doesn't display any data even though one item came back.

And I can't figure out any way to logically set the observable to the first item even if it did. I was expecting some sort of data control on the observable that allowed you to change which is the current item just like a BindingSource in Winforms or something.

Can someone help with the two issues? First being the data not coming back and binding properly, the second being how do I get the observable to set properly and get my selectedContact set with the right value.

Thanks!

MVVM

answered on 25 Jun 2012

3 answers

956 views

'sum is not defined' error on grid

Hi ,
I am developing an application using kendoui grid,and i am facing a problem
when grouping the records according to different columns.
I want to have records grouped by name column and at the same time have footerTemplate and groupFooterTemplate for quantity column.
When i add another column on grouping i get an error 'sum is not defined'.
I have looked around on kendo forums, and even the following forum topic:
http://www.kendoui.com/forums/ui/grid/groupable-aggregates-and-groupfootertemplate-problems.aspx

doesn't resolve me the problem.(which looks me more similar to my problem).
I am putting the columns,group,aggregates and fields using php variables:
$arr=array(array('field'=>'pol','title'=>'Part Number','width'=>'200px','aggregates'=> "count", 'groupHeaderTemplate'=> "Part Number: #=value#"),
array('field'=>'name','title'=>'PO ','aggregates'=> "count", 'groupHeaderTemplate'=> "PO Teknema: #=value#"),
array('field'=>'po_supp','title'=>'PO Supplier','aggregates'=> "count", 'groupHeaderTemplate'=> "PO Supplier: #=value#"),
array('field'=>'seltc','title'=>'Quantity Received','aggregates'=> "count", 'groupHeaderTemplate'=> "Quantity Received: #=value#"),
array('field'=>'pol_qty','title'=>'Qty to Receive','aggregates'=> "sum", 'footerTemplate'=> "Total Sum: #=sum#",'groupFooterTemplate'=> "Sum: #=sum#" ),
array('field'=>'qty_purchased','title'=>'Total Qty','aggregates'=> "count", 'groupHeaderTemplate'=> "Total Qty: #=value#"),
//array('field'=>'prod_name','title'=>'Part Number'),
array('field'=>'rif_ordine','title'=>'Rif.Ordine','aggregates'=> "count", 'groupHeaderTemplate'=> "Rif.Ordine: #=value#"),
array('field'=>'project','title'=>'Project','aggregates'=> "count", 'groupHeaderTemplate'=> "Project: #=value#"),
array('field'=>'po_ref','title'=>'PO Reference','aggregates'=> "count", 'groupHeaderTemplate'=> "PO Reference: #=value#"),
);
$columns=json_encode($arr);
$arr=array(
'pol'=>array('type'=>'string'),
'name'=>array('type'=>'string'),
'po_supp'=>array('type'=>'string'),
'seltc'=>array('type'=>'string'),
'pol_qty'=>array('type'=>'number'),
'qty_purchased'=>array('type'=>'number'),
//'prod_name'=>array('type'=>'string'),
'rif_ordine'=>array('type'=>'string'),
'project'=>array('type'=>'string'),
'po_ref'=>array('type'=>'string'),
);
$fields=json_encode($arr);
$arr=array('field'=>'name',
'aggregates'=>array(
array('field'=>'pol','aggregate'=>'count'),
array('field'=>'name','aggregate'=>'count'),
array('field'=>'po_supp','aggregate'=>'count'),
array('field'=>'seltc','aggregate'=>'count'),
array('field'=>'pol_qty','aggregate'=>'sum'),
array('field'=>'qty_purchased','aggregate'=>'count'),
array('field'=>'rif_ordine','aggregate'=>'count'),
array('field'=>'project','aggregate'=>'count'),
array('field'=>'po_ref','aggregate'=>'count'),
)
);
$group=json_encode($arr);
$arr=array(
array('field'=>'pol','aggregate'=>'count'),
array('field'=>'po_supp','aggregate'=>'count'),
array('field'=>'seltc','aggregate'=>'count'),
array('field'=>'pol_qty','aggregate'=>'sum'),
array('field'=>'qty_purchased','aggregate'=>'count'),
array('field'=>'rif_ordine','aggregate'=>'count'),
array('field'=>'project','aggregate'=>'count'),
array('field'=>'po_ref','aggregate'=>'count'),
);
$aggregate=json_encode($arr);

and then pass these variables on js

Please Help me to solve the problem.
Thanks in advance

Grid

answered on 25 Jun 2012

1 answer

181 views

Declarative Bindings Uniform Implementation/Documentation

We need uniform implementation and dedicated documentation similar to "Configuration" that describes how to declaratively bind controls. I'm having to do a lot of repetitive coding for binding that should be a simple declarative structure. You should be able to enable a property on your kendo framework and request it to declaratively data bind and off you go.  Very little coding necessary. For example:

<input id="siteList" class="ctrlDropDown" data-template="#siteListTemplate" data-dataurl="Layout/sites.json" data-selector="sites" />

    $(".ctrlDropDown")
    .each(function (index, htmlControl) {
        var control = $(htmlControl);
        var dataSourceUrl = control.attr("data-dataurl");
        //alert(dataSourceUrl);
        var dataSourceCallback = control.attr("data-datacallback");
        var template = control.attr("data-template");
        var dataType = control.attr("data-type");
        var dataText = control.attr("data-text");
        var dataValue = control.attr("data-value");
        var dataSelector = control.attr("data-selector");
        //alert(dataSelector);
        var dataSource = new kendo.data.DataSource({
            type: (dataType != null) ? dataType : null,
            transport: {
                read: {
                    url: dataSourceUrl,
                    jsonpCallback: (dataSourceCallback != null) ? dataSourceCallback : ""
                }
            }
        });
        dataSource.fetch(function (data) {
            //alert(JSON.stringify(data.sender._pristine));
            control.kendoDropDownList({
                autoBind: true,
                dataTextField: dataText,
                dataValueField: (dataValue != null) ? dataValue : dataText,
                template: (template != null) ? kendo.template($(template).html()) : null,
                dataSource: (dataSelector != null) ? eval("data.sender._pristine." + dataSelector) : data.sender._pristine
            });
        });
    });

Data Source

answered on 25 Jun 2012

1 answer

113 views

[Solved] Splitview on Trial Version is not available?

Hi all,

I'm looking at the splitview demo on this link http://demos.kendoui.com/beta/mobile/splitview/index.html and I try to create the prototype using its demo source code with kendo trial version, but I think the data-role 'splitview' and 'pane' didn't work well. Can anyone help me, please? Or this feature is available for only the licensing version?

Thanks

SplitView

answered on 25 Jun 2012