webix.ui({
    view:"datatable",
    rules:{
        title:webix.rules.isNotEmpty,
        rating:webix.rules.isNumber
    },
    on:{
        onValidationError:function(id, obj, details){
            var index = this.getIndexById(id)+1;
            webix.message({ type:"error", text:"Empty title for row "+index });
        }
     }
});