how to make a few events not deletable based on their database value… and the rest of all events should behave as normal… Is that possible??
You can use
scheduelr.attachEvent("onBeforeEventDelete",function(id){
if (scheduler.getEvent(id).some_property){
dp._in_progress[id] = true; //block any DB operation against event
return false; //block deleting
}
return true;
})