Full Calender JS - unique event id's

I was working with full calendar js dragging and dropping my tasks on to the calendar as events for a timesheet app and ran into a wierd issue. When I loaded up the available tasks to be dragged I set the event object's id key equal to the task's id as shown below.

//---load in all of task to be dragged onto the calendar
var loadTasks = function(){
      
 $('##external-events div.external-event').each(function() {
                
  var self = $(this);
  
  var eventObject = {
   title: $.trim(self.text())
   ,id: $.trim(self.data("taskid")) //---RIGHT HERE
   ,taskID:$.trim(self.data("taskid"))
  };
  
  self.data('eventObject', eventObject);
  
  self.draggable({
   zIndex: 999,
   revert: true, 
   revertDuration: 0
  });
 });

};

This will work if you don't drag the same task on the calendar twice. If you worked on a task from 8am to 9am and 1pm to 2pm if you grabbed the 8am to 9am event and attempting to resize it to 8am to 8.30am, full calendar js would move it and then it would also move the 1pm to 2pm event as well to 1pm to 1.30pm.

Every event object you put on the calendar should have a unique id.

If found this little snippet on the web that helped me make unique id's for event objects.

http://snipplr.com/view/2574/

var uid = (
 function(){
  var id=0;
  return function(){
   return id++ ;
   };
  }
)();

And on the "drop" variable of the full calendar js invoking I reset the event's id and rerendered the event.

, drop: function(date, allDay, jsEvent, ui) {   
         
 var originalEventObject = $(this).data('eventObject');
 var copiedEventObject = $.extend({}, originalEventObject);
 copiedEventObject.id = uid(); //---RIGHT HERE
 copiedEventObject.start = date;
 copiedEventObject.end = new Date(date).hours().add(-1);
 copiedEventObject._end = new Date(date).hours().add(-1);
 copiedEventObject.allDay = allDay;

 $('##calendar').fullCalendar('renderEvent', copiedEventObject, true);
 
 saveEvent($(this).data("taskid"),'','',copiedEventObject.start,copiedEventObject.end,'');
 
}

This fixed the issue.