Questions on Kendo UI for jQuery Forum

2 answers

120 views

Grid + json

I'm having a problem getting my grid to bind to some json data. I've searched the forums for a solution but no luck.

The following code throws an error of 'Unable to get value of property 'length': object is null...':

$("#search-grid").kendoGrid({

dataSource: {

transport: {

read: {

url: "a URL"

}

},

schema: {

data: "data"

}

},

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

});

Based on some other forum posts, this is indicative of a bad json response so i copied and pasted the json from the response to a javascript variable and it works so I'm not sure what I'm doing wrong.

This works:

var testdata = { "data": [{ "Name": "TestY" }] };

var searchViewModel = kendo.observable({

init: function () {

$("#search-grid").kendoGrid({

dataSource: {

data: testdata,

/*

transport: {

read: {

url: "a URL"

}

},

*/

schema: {

data: "data"

}

},

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

});

}

I've validated my response by other means and it is valid json so I'm not sure what to try next. Something is "wrong" with it but I don't know what.

here is the raw response:

HTTP/1.1 200 OK

Content-Length: 27

Content-Type: application/JSON

Server: Microsoft-IIS/7.5

X-Powered-By: ASP.NET

Date: Fri, 07 Jun 2013 20:00:59 GMT

{"data":[{"Name":"TestY"}]}

Thanks in advance

Any ideas?

Grid

answered on 07 Jun 2013

2 answers

207 views

declaratively set options on custom widget

I know that I can set options on a custom widget if I instantiate the widget in code, so that the following should output "foo" to the console.

var MyWidget = kendo.ui.Widget.extend({

init: function(element, options) {

kendo.ui.Widget.fn.init.call(this, element, options);

console.log(options.myOption);

},

options: {

name: "MyWidget"

}

});

kendo.ui.plugin(MyWidget);

$("#widgetRoot").kendoMyWidget({ myOption: "foo" });

Is there any way that I can do the same thing using declarative binding? I get as far as

<span id="widgetRoot" data-role="mywidget" data-bind="X"></span>

but there doesn't seem to be anything I can put in for X that gives me access to the options parameter. I haven't been able to find anything in the blog posts or documentation to shed light on this.

MVVM

answered on 07 Jun 2013

4 answers

648 views

Toggle Button In first Column

I want to create a Grid with a Toggle button in the first column.

Each Row describes a layer for a map:

1) name, 2) size, 3) type, etc.

In column 0, I would like to put a two-state toggle button.

[KEEP/DELETE] (if this layer already exists)

or a different button if the layer does not exist

[ADD/SKIP]

I have seen the checkbox in the GRID: http://www.kendoui.com/forums/ui/grid/grid-checkbox.aspx , but I think that to add four columns to the row (and to change it to a radio) would be confusing.

Or is there some other UX idea that I am just blanking out on.

Once the user has determined which rows to keep, delete, or to download, I will go through the .data() and do the appropriate actions.

Grid

answered on 07 Jun 2013

3 answers

234 views

Validation call not triggered on grid column sort / filter

Validation used for a field in KendoGrid works fine on currently being edited cell when I try to select other cell.But It doesn't work when I try to sort any column or use filter. Is it possible to prohibit user from sorting or filtering till validation for the field passes.

Code used for validation in datasource for one of field.

01.Project:{

02.editable:true,

03.validation: {

04.custom: function(input) {

05.if(input.val()=="") {

06.input.attr("data-custom-msg", "Message");

07.return false;

08.}

09.else

10.return true;

11.}

12.}

13.}

Validation

answered on 07 Jun 2013

1 answer

6.6K+ views

programmatically select a value in dropdown

Hi

I want to store selected item state. I can't trigger 'select' event properly.

$('#groups').kendoDropDownList({

dataSource: [

{ text: "No group", value: "none" },

{ text: "By type", value: "type_label" },

{ text: "By route", value: "route_label" },

{ text: "By status", value: "status_label" }

],

dataTextField: "text",

dataValueField: "value",

select: function(e){

var selectedDataItem = this.dataItem(e.item.index());

set_global_setting ("group_state", dataItem.value);

// ... code which depends on selectedDataItem and works this.dataSource

}

}).data("kendoDropDownList").select(function(dataItem){

return dataItem.value === get_global_setting("group_state");

});

var groups_dropdown = $('#groups').data("kendoDropDownList");

groups_dropdown.trigger("select", {item : groups_dropdown.dataItem()}); // does not work since 'select' event expects 'e.item' as 'li'

When user changes selected value 'e.item' in 'select' event is a 'li'.
When I change selected value programmaticlly I should specify next selected item not as dataItem but as 'li'.
How can I do this?
Maybe I should somehow change 'selectedDataItem' definition in 'select' event?

DropDownList

answered on 07 Jun 2013

1 answer

119 views

Cascading List Views with knockout

Hi,

I have an viewmodel with an observable array of objects, and a computed selectedObject. I'm attempting to bind a KendoListView to an observable array in selectedObject, but the ListView doesn't get updated.

There's a fiddle demonstrating the issue here:

http://jsfiddle.net/JrJ2q/3/

I'd appreciate any support you could provide.

Thanks,
John

ListView

answered on 07 Jun 2013

2 answers

94 views

Sorting on Custom Edit Column

Hello,

I am having a problem sorting by the column that I enabled a custom editor for.

I basically followed the sample at http://demos.kendoui.com/web/grid/editing-custom.html

How would you go about sorting by the "Category" column? The column it self is an object, so I think is getting confused.

Any ideas?

Thanks!
Covo

Grid

answered on 07 Jun 2013

3 answers

170 views

Multiselect not rendering correctly, throbber always showing, lookups appearing above text field

This is for Kendo UI version 2013.1.514.340.

Here is my MVC view:

<script src="~/Scripts/jquery-1.7.1.js"></script>
<script src="~/Scripts/kendo.web.min.js"></script>
<script src="~/Scripts/kendo.aspnetmvc.min.js"></script>
<link href="~/Styles/examples.css" rel="stylesheet" />
<link href="~/Styles/kendo.common.min.css" rel="stylesheet" />
<link href="~/Styles/kendo.default.min.css" rel="stylesheet" />

@using Kendo.Mvc.UI
@model List<CV.Prototype.ViewModels.MyRecord>

@(Html.Kendo().MultiSelect()
      .Name("categoryMultiselect")
      .DataTextField("Name")
      .DataValueField("Id")
      //SERVER BINDING
          .BindTo(Model)
          .Value(Model)
      )

My controller is simply:
        public ActionResult Index()
        {

            var x = new List<MyRecord>
                {
                    new MyRecord {Id = 1, Name = "Name1"},
                    new MyRecord {Id = 2, Name = "Name2"},
                    new MyRecord {Id = 3, Name = "Name3"},
                    new MyRecord {Id = 4, Name = "Name4"}
                };
            return View(x);
        }

All the records display inside the grey boxes, but are not inside the input text box. Also the throbber is constantly displaying. Apart from this it functions correctly both with Server and Ajax binding. Any clues as to what I might be missing?

MultiSelect

answered on 07 Jun 2013

1 answer

266 views

DropDownList Remnants on View Change

Hi,

I'm not sure if this is a bug or just a misunderstanding on my part. I'm also putting this post here, but it may be more relevant for the SPA section!

When using a dropdownlist inside a view (rendered as part of an SPA layout), the following element is created at the foot of the body (as well as the normal markup):

<div style="display: none; position: absolute;" data-role="popup" id="dropdownlist1-list" class="k-list-container k-popup k-group k-reset"><ul aria-live="off" id="dropdownlist1_listbox" aria-hidden="true" role="listbox" tabindex="-1" style="overflow: auto;" unselectable="on" class="k-list k-reset">

On a view change, using layout.showIn(), I was to understand the the view and all its child elements would be removed from the DOM. As it is, these elements remain - if the view reference is retained it would appear that only one instance is created if the the view reference is recreated, a duplicate is formed when the view is rendered.

The JSFiddle here demonstrates the issue hopefully. Obviously if there are a lot of views being used with many dropdownlists, then the capacity for many of these remnants to be created could be significant. I haven't done exhaustive testing, but this doesn't seem to happen for (for example) the grid.

Grateful for any assistance!

Many thanks,

J.

DropDownList

answered on 07 Jun 2013

1 answer

90 views

mismatched quotation marks around the word groupable in kendo.all.min.js

Not sure what version of kendo I have, but the javascript parser add-in for Visual Studio detected an anomaly in the kendo.all.min.js file -- in one place the word groupable is quoted with a single quote on the left end and a double quote on the right end.

Grid

answered on 07 Jun 2013