saas-one/frontend/operation-web/app/model/Base.js

Ext.define('saas.model.Base', {
    extend: 'Ext.data.Model',

    getPersistData: function () {
        var me = this,
            data = Ext.clone(this.getData({ persist: true }));
        if (Ext.isString(data.id) && data.id.indexOf(me.$className) == 0) {
            delete data.id;
        }
        return data;
    }
});