Calculated fields and parent()

[Pierre]

Hey,

I have an observable object looking something like this:

1.viewModel = kendo.observable({

2.    anArray: ['item1', 'item2', '...'],

3.    filteredArray: function() {

4.        return this.get('actions').filter(function (el) {

5.            return someLogic(el);

6.        });

7.    }


8.});

So far so good. No I want to use this filtered array in a source binding (to generate a table, say) and I want to to the following:

1.<script id="row-template" type="text/x-kendo-template">
2.    <tr>
3.        [...]
4.        <td><select data-bind="source: availableDescriptions, value: Description"/></td>
5.    </tr>
6.</script>

Where availableDescription is an array contained in my viewModel.
This generates an error (Uncaught TypeError: Object [object Array] has no method 'parent' )

Apparently kendo is resolving 'availableDescriptions' by calling 'parent()' on the observable array that is the context for my template. To work around this I changed my implementation of filteredArray to look like this:

1.filteredArray: function () {
2.    var a = this.get('actions').filter(function (el) {
3.        return doSomething(el);
4.    });
5.    a.parent = function () { return this; };
6.    return a;
7.}

It works, but isn't particularly graceful. Is there a better way to do this ?

[Alexander Valchev]

Hi Pierre,

It seems that this issue is addressed in the latest build. Please download Q2 official release (v2013.2.716) and give it a try.

For convenience I prepared a small sample:

• http://jsbin.com/umilab/2/edit

Regards,
Alexander Valchev
Telerik