Ext.define('saas.util.BaseUtil', {
    request: function(url, params) {
        return new Ext.Promise(function (resolve, reject) {
            Ext.Ajax.request({
                url: url,
                params: params,
                success: function(response, opts) {
                    resolve(response);
                },
                failure: function(response, opts) {
                    console.log('server-side failure with status code ' + response.status);
                    return reject(response);
                }
            });
        })
    }
});