Kendo Datasource Transport custom function not getting called - kendo-ui

Question

Im experiencing a rather annoying bug (?) in Kendo UI Datasource.
My Update method on my transport is not getting called when I pass a custom function, but it does work if I just give it the URL.
This works:
...
transport: {
update: { url: "/My/Action" }
}
...
This does not
...
transport: {
update: function(options) {
var params = JSON.stringify({
pageId: pageId,
pageItem: options.data
});
alert("Update");
$.ajax({
url: "/My/Action",
data:params,
success:function(result) {
options.success($.isArray(result) ? result : [result]);
}
});
}
}
...
The function is not getting invoked, but an ajax request is made to the current page URL, and the model data is being posted, which is rather odd. Sounds like a bug to me.
The only reason I have a need for this, is because Kendo can't figure out that my update action returns only a single element, and not an array - so, since I dont want to bend my API just to satisfy Kendo, I though I'd do it the other way around.
Have anyone experienced this, and can point me in the right direction?
I also tried using the schema.parse, but that didn't get invoked when the Update method was being called.
I use myDs.sync() to sync my datasource.

Answer 1

Works as expected with the demo from the documentation:
var dataSource = new kendo.data.DataSource({
transport: {
read: function(options) {
$.ajax( {
url: "http://demos.kendoui.com/service/products",
dataType: "jsonp",
success: function(result) {
options.success(result);
}
});
},
update: function(options) {
alert(1);
// make JSONP request to http://demos.kendoui.com/service/products/update
$.ajax( {
url: "http://demos.kendoui.com/service/products/update",
dataType: "jsonp", // "jsonp" is required for cross-domain requests; use "json" for same-domain requests
// send the updated data items as the "models" service parameter encoded in JSON
data: {
models: kendo.stringify(options.data.models)
},
success: function(result) {
// notify the data source that the request succeeded
options.success(result);
},
error: function(result) {
// notify the data source that the request failed
options.error(result);
}
});
}
},
batch: true,
schema: {
model: { id: "ProductID" }
}
});
dataSource.fetch(function() {
var product = dataSource.at(0);
product.set("UnitPrice", product.UnitPrice + 1);
dataSource.sync();
});
Here is a live demo: http://jsbin.com/omomes/1/edit