Stores, Callbacks and Sync

[wizkid]

Consider this model:

Ext.regModel('EditableUserList',
{
    fields: [
              { name: 'LoginUserId', type: 'string' },
              { name: 'FirstName', type: 'string' },
              { name: 'LastName', type: 'string' },
              { name: 'IsNew', type: 'boolean' },
              { name: 'IsDirty', type: 'boolean' },
              { name: 'IsDeleted', type: 'boolean' }],
    proxy:
    {
        type: 'rest',
        url: '/Home/EditableUserListDataPortal/',
        reader:
        {
            type: 'json',
            successProperty: 'success'
        }       
    }
});

For right now I am using 'rest'

Now consider this code for me store:

var storeUsers = new Ext.data.Store({ model: 'EditableUserList' })

function getEditList() 
{
    storeUsers.load(
   {
        scope: this,
        callback: function (records, operation, success) 
       {
            console.log("Got Editable List");

            records[0].set('FirstName', 'Slouch');
            records[0].set('LastName', 'Man');
        }
    });

Now consider my save logic:

function saveUserList()
{
    storeUsers.sync({
        scope: this,
        callback: function (records, operation, success) {
            console.log("Saved Editable List");
        }
    });
}

My problem is perhaps a confusion or maybe a bug. I am not sure.

So, when I call storeUsers.sync(...) it calls my Web Server's HTTP Post. The entire list goes to the server and I persist what changed, and send down the new list, from within my HTTP Post. Then what happens is odd. The store also calls HTTP Put (right now I don't have one) with just the changed data.

Why is the store calling both my HTTP Post and my HTTP Put? I can see the argument for only sending a list of what changed... But I don't get calling both because the Post is sending my entire list including the changes.

I don't want my server to have two calls. How do I disable either one? Or am I doing something wrong?

My second question is the Sync does not call my call-back... Is this a bug? How in the world could you use a Sync without it (if it's not a bug)? I need to know if the entire operation worked or not!

Thanks again!