Save one row or save all rows

Hello Victor,

I'm afraid that this is not supported. As you have already noticed, the sync method will push all of the changes/dirty records. There is no way to "sync" just individual records via the DataSource.

However, you may consider manually updating the record, for example by posting it via a AJAX request and using pushUpdate DataSource method to accept it. Here is a test page which illustrate such approach.