How to use kendo datasource when a REST service returns only one element

[pedro]

I have a service (ASP.NET WebApi) whose URL returns a single object:

http://localhost:60000/api/approvals/90a11073-cbfe-4442-9330-9b94d83d53a2

But I can't get the datasource to handle the scenario. The request is made and the response is ok but in the change event I don't have any data. the ok from qunit fails.

datasource.bind("change", function (e)
    {
        var element = datasource.get('90a11073-cbfe-4442-9330-9b94d83d53a2')
        ok(element);
        start();
    });

Also inspecting e.sender.data() shows that there are no elements in the result!

Is this supported? How?

Thanks,
Pedro

[Atanas Korchev]

Hi Pedro,

 The Kendo DataSource works with arrays. If your service returns a single element you need to convert it to array with one item. This is done by specifying the schema.data setting as a function:

schema: {
    data: function(response) {
     return [response]; // create an array from the response
    }
}

I hope this helps,
Atanas Korchev
the Telerik team

[pedro]

For reference here goes my solution:

// set the id of the model to the property named "id"

self.DefaultItem = kendo.data.Model.define({

        id: "id"

    });

 

self.dataSource = new kendo.data.DataSource({

        transport: {

            read: {

                url: self.serviceAddress

            }

        },

        schema: {

            model: self.DefaultItem,

            data: function (result) {

                if ($.isArray(result)) {

                    return result;

                }

                else {

                    return [result];

                }

            }

        },

// ... remaining datasource options

Rgds,
Pedro