Pending Review
Last Updated: 01 Mar 2017 11:29 by Itamar
Add the options to open data source by pressing the "Down Arrow" in the keyboard in the next components: 
autoComplete/ dropDownList/ comboBox
Pending Review
Last Updated: 24 Feb 2017 23:19 by ADMIN
There are several undocumented methods on the data source which provide some really nice functionality. The DataSource is able to store multiple 'pages' of data in an internal collections of ranges that can be accessed and populated by the range() and prefetch() methods. It looks like this is used mostly to support virtual grid scrolling, but I have found it very useful for other applications where a data source uses server operations. This is a really great feature and I'd like to see it officially supported in the future!
Pending Review
Last Updated: 07 Feb 2017 18:21 by ADMIN
Created by: Luc
Comments: 0
Category: Data Source
Type: Feature Request
9
As of today, it is possible to create custom "simple" bindings as per this code sample:

http://demos.kendoui.com/web/mvvm/custom.html

This works fine, but it would be appreciated to be able to create custom bindings with "complex" syntax, such as this:

data-bind="foo: {condition: somePropertyOnViewModel, option1: A, option2: B }"
Pending Review
Last Updated: 10 Nov 2016 10:20 by ADMIN
Created by: JDBPocketware
Comments: 3
Category: Data Source
Type: Feature Request
3
When using serverFiltering=true on a listview, if you type quickly 'abcd' the datasource.read is fired 4 consecutive times, making 4 consecutive server requests. There is no cap. 'abcd' can be typed within even 1 second, that will result in 4 server request per second. Now imagine 20 users at the same time typing to filter and each keystroke firing a server request is kind of an unnecessary overload.
Pending Review
Last Updated: 10 Nov 2016 10:19 by ADMIN
Created by: Ricard Bertran Vall
Comments: 0
Category: Data Source
Type: Feature Request
1
Send filters even when the server filtering is disabled

As its documented on serverFiltering , data parameter contains filter property which follows this schema:

filter[logic]: and
filter[filters][0][field]: name
filter[filters][0][operator]: startswith
filter[filters][0][value]: Jane

When I set serverFiltering to false, data parameter doesn't contain any information about current filter. (See image attached in my first post)

And the only way I have to send the filter option in a different format is querying the DOM input element .

Shouldn't it work the same way? no matter whether filtering is set either client-side or server-side?
Pending Review
Last Updated: 03 Nov 2016 03:21 by Vivek
Currently we can only have the CRUD Operations on the remote data source. Atleast thats what it looks like. 

Is it possible to have more custom operations on Data source that can make remote calls. Or maybe there are and I am not aware of it. 
Pending Review
Last Updated: 04 Oct 2016 14:18 by ADMIN
Created by: Franz
Comments: 1
Category: Data Source
Type: Feature Request
19
It should be possible to specify a validate() method on each viewmodel that gets triggered each time a new model value is .set(). In case of an unsuccessful validation an error event or binding could be triggered.
Pending Review
Last Updated: 06 Sep 2016 09:21 by ADMIN
Created by: Misiu
Comments: 0
Category: Data Source
Type: Feature Request
11
Add functionality that will allow adding shared datasource to multiple components with individual filters.

This way we will be able to have one data source and multiple grids showing different part od data.
Completed
Last Updated: 30 Aug 2016 12:27 by Houssam
Created by: Telmo Silva
Comments: 21
Category: Data Source
Type: Feature Request
101
dataSource: {
       type: "odata",
       typeversion: "3"
}
Pending Review
Last Updated: 08 Jun 2016 09:06 by Il
Currently all "data*-template" options are limited to use ad #ID selector to pick the template script from the page.
This is problematic in big SPAs that have multiple pages dynamically loaded with possible collisions in IDs.
To avoid the hassle of mantaining unique ids across all pages (or having to dynamically generate ids) I therefore propose to allow for any jQuery selector in those options.

<script type="text/template" class="myAwesomeTemplate"></script>
<div data-bind="source: dataSource" data-template=".myAwesomeTemplate"></div>

To maintain retrocompatibility a first search with the "#" can be performed before executing the selector.

Since I am not very good with GitHub, here is the code that I did implement:

function parseOptions(element, options) {
    var result = {}, option, value, templateElement;
    for (option in options) {
        value = parseOption(element, option);
        if (value !== undefined) {
            if (templateRegExp.test(option)) {
                templateElement = null;
                if(!value) {
                    throw new Error("Missing template selector in option " + option);
                }
                try {
                    templateElement = $("#" + value);
                    if(!templateElement.length) {
                        templateElement = $(value).first();
                    }
                } catch (jQueryError) {
                    throw new Error("Invalid template selector " + value + " for option " + option);
                }
                if(!templateElement.length) {
                    throw new Error("Can't find a template with the specified " + value + " selector in option " + option);
                }
                value = kendo.template(templateElement.html());
            }
            result[option] = value;
        }
    }
    return result;
}
Pending Review
Last Updated: 11 May 2016 14:10 by ADMIN
Created by: Imported User
Comments: 0
Category: Data Source
Type: Feature Request
1
It would be really useful to be able to modify request parameters in the RequestStart event of the dataSource; this would be consistent with the functionality of the Kendo Tooltip RequestStart Event.
Pending Review
Last Updated: 11 May 2016 13:30 by ADMIN
Created by: Roman
Comments: 0
Category: Data Source
Type: Feature Request
3
Currently kendo.DataSource.get() and kendo.Datasource.getByUid() methods are very slow in case there some non-trivial amount of data stored. Actually, these methods loop on all items in dataSource on each call.
Why not add index for id field? Indexed access can boost up many real-life scenarios.
I prepared following jsfiddle to demonstrate the slowness:
http://jsfiddle.net/terikon/eb3tsjzf/9/
Pending Review
Last Updated: 11 May 2016 13:17 by ADMIN
Hello,

 I knew there was "set" function for kendo.data.ObservableObject, it could change value of specified field.

But after this action, we need call "sync" method for data source manually, and sync action will fire some events/ data bound again.

Is there another method, that we only hope sync value of specified field, without fire events and data bound again?

Thank you.
Pending Review
Last Updated: 11 May 2016 12:46 by ADMIN
Created by: Casimodo
Comments: 0
Category: Data Source
Type: Feature Request
3
It would be great to implement the "has" operator for OData V4 enum filter scenarios.

See http://www.telerik.com/forums/datasource---odata-v4---enums-not-supported-yet

Regards,
Kasimier Buchcik
Pending Review
Last Updated: 11 May 2016 12:27 by ADMIN
Created by: Jeff
Comments: 0
Category: Data Source
Type: Feature Request
10
The DataSource Model including validation should come from the server and not defined within javascript where possible.  There should be two primary ways to populate the model using the DataSource widget.

1.) Retrieved from the DataSource call itself as a JSON property off of the data call.  You should be able to define a schema: { parseModel: function(data) { return data.model } } to retrieve the model directly from the data call.

2.) You should be able to specify the schema: { model: new DataSource({ ... }) }.  The model itself should be DataSourcable so you can retrieve (with ETag/Last-Modified and Cache-Control) the model as a separate request alongside the data.

Given that you should be able to retrieve the model as a separate request,  you should be given the opportunity to augment/modify the model within the client side using something like schema: { changeModel: function(model) { // Supplement Model here
} }
Pending Review
Last Updated: 11 May 2016 12:27 by ADMIN
Create a datasource with a schema that has number fields.

Try to filter by one of these fields using a "contains" and an ignorecase and kendoui creates an expression like

(function(d, __f, __o) {
return ((d.MyNumber || '').toLowerCase().indexOf('12') >= 0)
})

this errors because the number does not have a toLowerCase() method.

Our code is generic and we do not want to have to change ignorecase depending on the data-type, as sometime the filter will be on a string and sometimes on a number. Can a fix be put in place to allow this combination to run without error.

Thanks.
Pending Review
Last Updated: 11 May 2016 12:22 by ADMIN
Created by: Greg
Comments: 0
Category: Data Source
Type: Feature Request
16
Add full support for syncing of changes made to the HierarchicalDataSource in a TreeView and Grid. Currently, sync() does not perform the correct sequence of CRUD operations that represent the changes made to the data source or control.
Pending Review
Last Updated: 11 May 2016 11:40 by ADMIN
Created by: Ross Micheals
Comments: 0
Category: Data Source
Type: Feature Request
2
The HiearchicalDataSource should support XML data binding. If not, then the examples and documentation should be updated until that support is present.
Pending Review
Last Updated: 11 May 2016 10:06 by ADMIN
Created by: Imported User
Comments: 1
Category: Data Source
Type: Feature Request
3
Would be good to have ability to to something like this on an observable object:
o.set({ a: 1 })
I.e. pass an object to the set function to update/add properties in o from that object.
Under Review
Last Updated: 11 May 2016 06:37 by ADMIN
Created by: Imported User
Comments: 2
Category: Data Source
Type: Feature Request
3
I ran into this problem wherein I receive a 'Maximum stack size exceeded error' when I try to bind a collection with circular references  to kendo ui grids and data viz charts.  My Angular SPA is using breeze to fetch server-side entity models. As these are entity models, they do have circular references. I am also using the angular-kendo library for the directives.

Current fixes include manual removal of such entities from the collection. It would be great if the controls can handle such collections.