gistfile1.js

Y.PullsList = Y.Base.create('pullsList', Y.ModelList, [], {
    sync: function (action, options, callback) {
        var url = 'https://api.github.com/repos/yui/yui3/pulls?callback={callback}';

        Y.jsonp(url, function (res) {
            var meta = res.meta,
                data = res.data;

            if (meta.status >= 200 && meta.status < 300) {
                callback(null, res);
            } else {
                callback(data.message, res);
            }
        });
    },

    parse: function (res) {
        return res.data.map(function (pull) {
            return {
                id      : pull.number,
                url     : pull.html_url,
                title   : pull.title,
                assignee: pull.assignee && pull.assignee.login
            };
        });
    },

    unassigned: function () {
        return this.filter({asList: true}, function (pull) {
            return !pull.get('assignee');
        });
    }
});