API Example: Change the function to compute what resource is overloaded

This functionality is available since version 2.3.0!

By default, the resource is marked as overloaded, if it has more items assigned than a limit. 

Imagine you want to mark the resource as overloaded only if the resource has more UNRESOLVED (i.e. open) items assigned than a limit.

Example: you want to achieve the situation as on the following screenshot: Steve Developer is overloaded on Dec-18  but not on Dec-19 because on that date all tasks are resolved, except one task (the only unresolved is EL-136).

To configure this, add the following script to Widget Properties > Advanced > Gantt Script

gantt.templates.checkOverloadedResource_function = function(start_date, end_date, resource, tasks){
    var unresolved_tasks =  tasks.filter(task => !task.resolved);    
    if(unresolved_tasks.length > 1){
        return true;
    }else{
        return false;
    }
};

Of course, you can write more complex scripts, e.g. taking into account partial assignments such as if the task does not load the resource to 100%.