Questions on Kendo UI for jQuery Forum

5 answers

139 views

[Solved] remote data binding - json - http 304

Hey,

I have this use case:

On the server I have a JSON file that changes (for example) every 15 minutes.
The client typically leaves his browser open and wants to see the changes as fast as possible.

On the server I solved it this way:
When getting the json file, the server uses a http 304 to indicate that the file hasn't changed since the last request.

Client side I solved it this way:
I have a kendo datasource, and an interval that is doing datasource.read (polling mechanism):

Problem:
The data isn't changed, but still the "change" event of the datasource is triggered.

Is there any way of achieving this with kendo datasource, without reprogramming the entire datasource with $.ajax?

Or is this maybe a good feature request :-) ?
As an extra: I don't want to use polling, but look at the Expires http header, to know when to do the next request.

My code:

01.var datasource = new k.data.DataSource({

02. transport: {

03. read: {

05. url: 'test.txt',

06. dataType: 'json'

07. }

08. },

09. schema: {

10. data: function (data) {

11. return data.Layers || [];

12. }

13. }

14.});

15.

16.//polling..

17.var _interval = window.setInterval(function () {

18. datasource.read();

19.}, 5000);

20.

21.datasource.bind('change', function (e) {

22. //This shouldn't be triggered every 5 seconds

23. console.log(this.data().length);

24.});

The response received from the server looks like this:

HTTP/1.1 304 Not Modified

Last-Modified: Mon, 02 Sep 2013 08:02:11 GMT

Expires: Mon, 02 Sep 2013 08:15:00 GMT

Accept-Ranges: bytes

ETag: "383bbbab2a7ce1:0"

Server: Microsoft-IIS/7.5

X-Powered-By: ASP.NET

Date: Mon, 02 Sep 2013 09:23:10 GMT

Kind regards,

Data Source

answered on 04 Sep 2013

5 answers

378 views

Kendo Grid cell edit mode is not working in Internet explorer but in Google chrome

Hi Kendo Team,

We are using Kendo UI (Free download version) for our ASP.NET + CRM support application
development.
Kendo Grid and Datepicker are the controls we are facing issues with.

1) Grid cell edit does not work in IE8 browser but in Chrome browser
If you are editing Grid cell and hit TAB key or ENTER key, cell wont persist the newly added values while in IE8 but it will persist the newly added values if you are using Chrome.
If cell is of numeric type then while editing Increment and Decrements option within cell are not coming in IE8 but in chrome.

2) Date picker is not working in Kendo window We are placing Date picker control along with some other html controls in a div and assigning that div to Kendo window. On click of Date picker icon it is failing to open Date popup in any browser. Whereas we have Date picker in parent window and which is working absolutely fine there but not in kendo window (child modal window)

Please suggest us some solution on this to make it working.

--Thanks,
RP

Grid

answered on 04 Sep 2013

1 answer

164 views

Web ListView search and autocomplete

is there a way to tie autocomplete to listview results? What I'm trying to do it to use autocomplete search box, and as results come in, populat listview.

thanks

ListView

answered on 04 Sep 2013

1 answer

85 views

Architecture Question

First, let me say that I have a background in ASP.Net web development and have quite a bit of experience writing iOS client side apps in objective c and c# (via xamarin).

I have a client who wants us to start a mobile web site for them but doesn't quite feel comfortable going client side at the moment. If this project is successful, they may decide to go to a full blown client side iOS app. If I write the app using Kendo UI Web (HTML5), is there a clear migration path to Kendo UI mobile?

General Discussions

answered on 04 Sep 2013

3 answers

257 views

Problem when submitting data in a Keno UI Window

Hello,
I've got a problem with a page inside a Kendo ui page...
consider this code please

That's my main page calling a window

@{

ViewBag.Title = "Index";

}

<h2>

<button id="button" class="k-button">openWindow</button></h2>

@Html.Kendo().Window().Name("winTest").LoadContentFrom("Index", "TestWindow").Modal(true).Visible(false).Title("Prova");

<script>

$(function () {

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

$("#winTest").data("kendoWindow").open();

}

);

});

</script>

Here's the content of the window I load

@{

ViewBag.Title = "Index";

Layout ="";

}

@using (Html.BeginForm("Inserisci"))

{

<h1>Some text</h1>

<input type="submit" value="Click me" class="k-button" />

}

And the test controller

public class TestWindowController : Controller

{

//

// GET: /TestWindow/

public ActionResult Index()

{

return View();

}

public EmptyResult Inserisci()

{

return null;

//return EmptyResult

}

When I click on the button the main page is redirected to Index of TestWindow..... how can I fix this?

Another question how do I tell to the view inside the window to close itself after having done some update on the repository?

Thanks

Window

answered on 04 Sep 2013

2 answers

121 views

[Solved] Sortable grid

Dear Kendo Team,
I've grid with sortable,filterable, groupable and resizeable behaviors.
All works fine, excepted it is a bit hard to get the resizeable behavior due to the fact the cursor seems to get the css cursor style of the sortable behavior...
Could you provide me a solution in order to set the sortable behavior only on the title of a header column?
Thanks in advance

Grid

answered on 04 Sep 2013

2 answers

475 views

Get grid data on page load

Hi,

I have a kendo grid that will be initialized and loaded with data on page load. In many instances, due to slow network, the grid takes time to load. How do I get to find out when the grid has been initialized and loaded completely, so that I can take the data from the grid using dataSource.data() api ?

Thanks,
V N

Grid

answered on 04 Sep 2013

1 answer

169 views

[Solved] View event "beforeHide" is not firing

When I try out the order in which the events of a view are fired, like this:

    <div data-role="view" data-layout="phoneLayout"
        id="settingsView"
        data-model="app.viewBehind.settings.viewModel"
        data-before-show="app.viewBehind.settings.beforeShow"
        data-init="app.viewBehind.settings.init"
        data-show="app.viewBehind.settings.show"
        data-before-hide="app.viewBehind.settings.beforeHide"
        data-hide="app.viewBehind.settings.hide">
[...]
    </div>

the beforeHide event (described here: http://docs.kendoui.com/api/mobile/view#events-beforeHide) does not fire at all. Curiously enough, i cannot find any reference to "beforeHide" in the kendo.all.min.js sources. Is this a version related issue? I'm using kendoui.complete.2013.2.716.trial .

TIA Peter

General Discussions

answered on 04 Sep 2013

1 answer

82 views

Slider very hard to slide accurately on Mobile ( iPhone )

Hi,

Kendo UI 2013.2.716
PhoneGap 3.0.0

I have a slider in a view. On an iPhone it is very hard to capture the handle and slide it with a finger.
Most of the time the finger simply slides over it, without making it move; so the user has to try again and again until it captures the touch for the handle and starts moving.

Is there any way to improve this? It is really unusable the way it stands now.

Thanks

Slider

answered on 04 Sep 2013

1 answer

103 views

Performance/right usage of kendoComboBox

Hello,
We've being analysing kendo-ui before we buy it and we face what appears to be a performance issue(or not). As we are not costumers yet, we don't know if this is the right place to post this question, but here we go.

Attached to this thread there's a small html file that takes a quite long time to run despite its simplicity.
The questions are very simple:

1 - Are we using kendoComboBox in the wrong way?
2- There is a faster way to achieve the same result?
3- Is this performance considered normal?
4- If the answer for question 3 is `yes', do you have any guidelines to help us out to bypass these performance issues(number of elements per page, number of bindings per page etc)?

Ah, of course, it may be not a `performance issue' in other person point of view, so, when you read `performance issue' here, its our point of view :)
Despite that, neat library and great components.

ComboBox

answered on 04 Sep 2013