gistfile1.js

YUI().use('base', 'gallery-resource', function(Y){

    var MyClass, myClass, resource;
    
    // MyClass Def
    
    MyClass = function (config) {
        MyClass.superclass.constructor.apply(this, arguments);
    };
    
    Y.extend(MyClass, Y.Base, {
        
        initializer : function () {
            
            this.after('fooChange', function(e){
                var foo = e.newVal;
                this.get('resource').PUT({
                    params  : foo.id,
                    entity  : foo
                });
            });
        }
    
    }, {
    
        NAME    : 'myClass',
        ATTRS   : {
        
            foo         : {
                validator: Y.Lang.isObject
            },
            
            resource    : {
                validator : function (v) {
                    return ( v && Y.Lang.isFunction(v.sendRequest) );
                }
            }
        
        }
    
    });
    
    // Resource instance
    
    resource = new Y.Resource({
        uri     : 'some/path/{id}',                 // {id} is substituded
        headers : {
            'Content-Type'  : 'application/json',   // causes JSON serialization on request entity
            'Accept'        : 'application/json'    // causes JSON deserialization on response entity
        },
        on      : {
            putSuccess : function(e){
                Y.log('saved to server');           // logs to the console on every save
            }
        }
    });
    
    // MyClass instance
    
    myClass = new MyClass({ resource: resource });
    
    // Set and save foo to server
    
    myClass.set('foo', {
        id      : '1',
        bar     : 'bar',
        date    : new Date().getTime()
    });
    
    // PUT request will be made to some/path/1 with a JSON entity body

});