Questions on Kendo UI for jQuery Forum

3 answers

252 views

Debugging Kendo ListView in Firefox Problem

When i try to step through an event handler for my listview's change event, Firefox locks up. Can not click on any of the debugger menu items. Can't switch back to the console window. Browser becomes completely unresponsive. I am logging to the console window from my event handler, and no errors are mentioned.

I know this has to be something silly on my part, just wondered if any one else has experienced this problem.

Here is the definition of my ListView :

var carriers = $("#carrierList").kendoListView({

selectable: true,

pageable : true ,

change: onChange,

dataBound : onDataBound ,

dataSource: t94StragglerCarriers,

template : kendo.template($("#carrierTemplate").html())

}).data("kendoListView");

Here is the event handler :

function onChange() {

var listView = $("#carrierList").data("kendoListView");

var index = listView.select().index();

var item = listView.dataSource.view()[index];

console.log("Item " + index + " selected. Text = " + item.val);

}

Again , this only happens when i try to debug this event handler in firefox.

Thanks in advance.

General Discussions

answered on 26 Nov 2013

1 answer

146 views

Is it Possible To Set Series Name in Chart?

I am trying to set the series name from another field in the model.

For example, my current code is:
series.Column(model => model.CallbackFrequency1).Name("FREQ 1").Color("#003366");
series.Column(model => model.CallbackFrequency2).Name("FREQ 2").Color("#999999");
series.Column(model => model.CallbackFrequency3).Name("FREQ 3").Color("#00ac36");
series.Column(model => model.CallbackFrequency4).Name("FREQ 4").Color("#e8b700");

The name of the series depends upon a date range selected by the user. I am returning the name I want to use in the model, but I can not figure out how to dynamically populate the series column name.

Is this possible?

General Discussions

answered on 26 Nov 2013

1 answer

165 views

Bindings not preserved through 'set' function

I need to be able to 'map' some certain data incoming to an existing javascript object that called upon the appropriate code of my MVVM framework, so I took my hand at trying it myself and I thought I had done a pretty good job, but I am running into a problem.

Edit

I have also created a jsBin to show this behavior exists even without my mapping. This is something that is occuring in the `set` function of kendo, and I want to find a way to stop it

jsBin

Basically, I draw a "mapping" like this, using Kendo's model system.

var Model = kendo.data.Model.define({

Id: "Id",

fields: {

Id: {

type: "string",

},

Name: {

type: "string",

},

Mutations: [],

Tags: []

},

mapping: {

Tags: {

children: function (data) {

return $.extend(data, {

onRemove: function (e) {

// execute code

}

});

}

},

Mutations: {

children: function (data) {

return $.extend(data, {

Label: null,

onRemove: function (e) {

// execute code

},

onEdit: function (e) {

// execute code

},

onSave: function (e) {

// execute code

}

});

}

});

I know that on the outside, this looks a bit unnecessary, but it works well for me and fits my thinking process. I'm open to suggestions for other ways to do it, but ...

Anyway, the purpose of this is to "map" the `onRemove` functions to the `Tags` array when it comes in from the server, and to map the `onRemove, onEdit, onSave` functions to each child in the `Mutations` array. I can do this 'after' they are loaded, but I wanted to try this approach to learn more about javascript.

So then, this is my mapping code.

kendo.data.ObservableObject.prototype.fromJSON = function (source, mapping) {

var name,

value,

observable = this;

// if there is mapping given, then pass it through that first

if (mapping) {

source = kendo.mapping(source, mapping);

}

for (name in source) {

if (observable.hasOwnProperty(name)) {

observable.set(name, source[name]);

}

This will call the following code, which I felt pretty proud of myself for writing, considering this is my first time trying to do anything like this in javascript.

kendo.mapping = function (source, mapping) {

var name,

value;

// if the user provides us a mapping, we can use that to help

// build the objects appropriately

for (name in source) {

if (source.hasOwnProperty(name)) {

// get the value for this property or item

value = source[name];

// try to determine if this is an array, or just a

// normal object. That will greatly dictate our choice of behavior

if (value instanceof Array) {

// if this is an array, then we will try to check for a

// key in the mapping schema

if (mapping[name].children) {

// if we discover a mapping key for this array, we

// will use it to reconstruct the array data

for (var i = 0; i < value.length; i++) {

source[name][i] = mapping[name].children(value[i]);

}

} else {

// attempt to match any non array type keys

if (mapping[name]) {

source[name] = mapping[name](value);

}

return source;

}

Now for a while, I thought this was awesome. It was working how I wanted, as demonstrated here;

// -------------------------------------------------------------

// create a kendo ui grid to show the existing prototypes

// -------------------------------------------------------------

widgets.grid = $('#grid').kendoGrid({

dataSource: {

transport: {

read: {

url: "/administrator/data/prototypes",

dataType: "json",

type: 'GET'

}

},

schema: {

total: "total",

data: "data"

},

page: 0,

pageSize: 15,

take: 15,

serverPaging: true,

serverFiltering: true,

type: "aspnetmvc-ajax"

},

pageable: {

refresh: true,

pageSizes: true

},

selectable: "row",

columns: [

{

field: "Id",

width: 25,

title: "Identity"

},

{

field: "Name",

width: 40,

title: "Name"

}

],

change: function (e) {

// get the selected row from the grid

var selected = this.select();

// get the data from the selected row

var data = this.dataItem(selected);

// update the model

viewModel.fromJSON(data.toJSON(), viewModel.mapping);

},

}).data("kendoGrid");

So this code goes to my controller and gets a JSON list of all of the relevant items from the database (stored in `RavenDB` as JSON). This returns flat items, which is exactly how I want them in the database (since the functions can't be serialized, obviously). But when I get them into my UI, I want those functions. So in the `change` function, I take the data and pass it through my `fromJSON` function, which accepts the mapping defined in the view model.

This works, it works very well I think. But then when I try to go further and have other bindings on the view model.. .like this..

viewModel.Mutations.bind("change", function (e) {

// do something else

});

This is really normal kendo code. I attach the `change` event to a function so that it runs whenever that `ObservableArray` changes. This works fine in my other pages where I don't use mapping, but on this one, once the mapping runs, it seems to become 'unbound'. I have found that if I put the `bind` code _after_ the mapping is done, it works.

So I have to assume that what is happening is that the code that does the binding is somehow hidden inside of the `ObservableArray`, and that it gets deleted when it runs the mapping.

Can anyone help me with this?

MVVM

answered on 26 Nov 2013

1 answer

220 views

Server Side Filtering With Automapper and ViewModels

Im trying to figure out a way to handle server side filtering where our controllers return viewmodels rather than the actual entity. Because a viewmodel is being bound to the grid, when ever I sort or filter the field that is being sent back to the controller is the property name from the viewmodel and does not match to the entity. Because of this I can't do a dynamic where clause as the where clause contains the field of the viewmodel (CarName) and not the entity (Name). Somehow I need a way to map the filter for the viewmodel fields back to the entity so that I can filter properly.

Here are the basic steps:
Call Repository Get IQueryable<Car> Entity
Filter and sort Data (With Dynamic Query)
Convert entity to viewmodel with Automapper
Return viewmodel

-- This represents my entity and view model, both the fields are the same but have slightly different names



public

class Car {

public string Name { get; set; }

}

public class CarViewModel {

public string CarName { get; set; }

}

Just to point out im using the Kendo UI Web and not the MVC wrappers.

Grid

answered on 26 Nov 2013

1 answer

418 views

Grid will not populate from JSON String

I have a kendo grid that I am pulling data from an API (same site)... I cannot grid to populate with the data.

Here is an example of the json string...

[{"clientID":8,"memoID":14,"memoTime":"2012-05-09T09:04:00","subject":"Letter","memo":"Sent Letter ","initials":"AA","code":1,"private":false,"sticky":false}, ... and so on ...]

The data has no 'structure name' returned so in the schema section below I am not sure what to put?

Here is the code calling the JSON: (This is from one of your online examples)
<div id="example" class="k-content">
<div id="grid"></div>
$(document).ready(function() {
var grid = $("#grid").kendoGrid({
dataSource: {
transport: {
read: {
url: "/memo/a/8/b/1",
dataType: "json",

}
},
schema: {
data: function (response) {
return response.data;
}

},
pageSize: 20,
serverPaging: true,
serverSorting: true,
serverFiltering: true
},
toolbar: kendo.template($("#template").html()),
height: 430,
sortable: true,
pageable: true,
columns: [
{ field: "MemoID", title: "MemoID", width: 100 },
{ field: "Subject", title: "Subject" },
{ field: "Initials", title: "Initials", width: 100 },
{ field: "Memo", title: "Memo" }
]
});

Data Source

answered on 26 Nov 2013

3 answers

427 views

[Solved] Problem charting NaN

Is it possible to not chart values that are Not A Number? NaN shows in chart as large value, sample attached.

Charts

answered on 26 Nov 2013

1 answer

673 views

Select event not firing on second click of treeview node

Hi,

I am developing a webmail client with angularjs and kendoui, it has two panes left for viewing user folders and right for message display / composition. For displaying the folders I am using kendoui treeview and when they select a node we display the proper messages for that folder.

Problem: When a user choose a folder, Drafts, then clicks on a message to finish composing that message they are unable to click on the Drafts folder node to navigate back to the Drafts folder gridview.

Code:

var theTree = $("#treeview").kendoTreeView({

dataSource: folderArray,

template: $("#foldersTemplate").html(),

expand: function(e) {

code for grabbing any sub-folders.

},

select : function(e) {

var treeviewInner = e.sender,

idFolder = treeviewInner.dataItem(e.node).id;

/* set-up angularjs controller scope */

window.location.href = "#/folder/" + idFolder; //navigates to the proper folder gridview when node seleced.

}

});

The issue I'm seeing is that once a node is selected, whenever you re-click on it, the select code does not fire.

Any thoughts on how to work around this?

TreeView

answered on 26 Nov 2013

5 answers

461 views

Chart Event After Refresh?

I am using the kendo.dataviz.ui.Chart via the MVC wrapper. I am looking to fire an operation after the chart refreshes...
$("#mychart").data('kendoChart').refresh();
Once the animations, etc, finishes for the refresh, I would like be notified by a promise or chart event.

Charts

answered on 26 Nov 2013

1 answer

595 views

Add progress bar to each row in a Kendo grid

Hi,

I have a Grid and want to add a progress bar to row based on a value stored in that row. is this possible?
Thanks,
Chris

Grid

answered on 26 Nov 2013

3 answers

229 views

Kendo UI 2013 Q3 and Issue with Bootstrap Moonlight Theme

Hi,

I'm trying to get a Bootstrap Metro theme in my application but a page renders with a default Bootstrap theme.
http://demos.kendoui.com/bootstrap/

Not sure if I'm loading all the necessary CSS and in in the right order.

        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">

        <style type="text/css">
            html {
                overflow-x: hidden; /* Prevent scroll on narrow devices */
            }
            body {
                padding-top: 60px;
            }
        </style>

        <link href="app/_libraries/bootstrap-3.0.2/css/bootstrap.min.css" rel="stylesheet" />

        <link href="app/_libraries/kendo-2013-Q3/styles/kendo.common-bootstrap.min.css" rel="stylesheet" />
        <link href="app/_libraries/kendo-2013-Q3/styles/kendo.moonlight.min.css" rel="stylesheet" />
        <link href="app/_libraries/kendo-2013-Q3/styles/kendo.dataviz.min.css" rel="stylesheet" />
        <link href="app/_libraries/kendo-2013-Q3/styles/kendo.dataviz.moonlight.min.css" rel="stylesheet" />
        <link href="app/_libraries/kendo-2013-Q3/styles/kendo.mobile.all.min.css" rel="stylesheet" />

        <link href="app/_resources/styles/application.css" rel="stylesheet" />

Thanks

General Discussions

answered on 26 Nov 2013