Here is the second in a series of webcasts about the RIA/JS project. This extends from the last webcast (RIA/JS- The barebones demo) and switches from implicit-commit to look at the bufferChanges: true mode.

It’s only 8 minutes, so check it out – you can download the original to your ‘device’ of choice from vimeo here: http://www.vimeo.com/30170543 (the link to download is on the right halfway down the page).

Here is the code that I entered into the ‘console’ during the demo for reference (but watch the video, ok?).

var contacts = [];

var ds = $([contacts]).dataSource({
  serviceUrl: '/RiaJs-Demo1-ContactService.svc',
  queryName: 'GetContacts',
  bufferChanges: true });

ds.refresh();

$.observable(contacts[0]).setProperty('FirstName' : 'Barry');

ds.revertChanges();

$.observable(contacts).insert(0, {
  'FirstName' : 'Erik', 
  'LastName' : 'Porter'
});

$.observable(contacts[0]).setProperty('FirstName' : 'Jonjo');

ds.commitChanges();

Back soon with more…