Using Y.ModelConsumer

gistfile1.js

// assumes existence of Y.UserModel

YUI.add('user-view', function (Y) {

    Y.UserView = Y.Base.create('userView', Y.View, [ Y.ModelConsumer ], {
        template: Y.Handlebars.templates['user'],

        initializer: function () {
            var user = this.get('user');

            this.after({
                'user:change': this.render
            });
        },

        render: function () {
            var content = this.template(this.get('user').getAttrs());

            this.get('container').setHTML(content);
            return this;
        }
    },
    {
        ATTRS: {
            user: {
                value: null,
                setter: '_setM',
                mClass: Y.UserModel
            }
        }
    }
);

}, '0.0.1', {
    requires: ['handlebars-base', 'view', 'templates', 'gallery-model-consumer']
});