Is there a way to prevent overlapping events in jQuery FullCalendar?

Question

Is there a way to prevent overlapping events in jQuery FullCalendar?

Answer 1

Just add

eventOverlap: false

as one of your options outside of the events element.

You can also add the option

overlap

to a single event, which will override the eventOverlap on that single event.

events: [
                        {
                            title  : 'event1',
                            start  : '2017-05-27'
                        },
                        {
                            title  : 'event2',
                            start  : '2017-05-28',
                            end    : '2017-05-29'
                        },
                        {
                            title  : 'event3',
                            start  : '2017-05-30T12:30:00',
                            allDay : false, // will make the time show
                            draggable: true,
                            editable: true,
                            overlap: true,
                        },
                        {
                            title  : 'event3',
                            start  : '2017-05-30T09:30:00',
                            allDay : false, // will make the time show
                            draggable: true,
                            editable: true,
                        }
                    ],
                    eventOverlap: false

Answer 2

As of version 2.20 this change has been incorporated by default...

use

eventOverlap: false

http://fullcalendar.io/docs/event_ui/eventOverlap/

Answer 3

Same as Matthew Webb but Following worked for me since sometimes my end date was null when i was dragging the event from allDay to some time slot

function isOverlapping(event) {
    var arrCalEvents = $('#' + g_str_FullCalenderID).fullCalendar('clientEvents');
    for (i in arrCalEvents) {
        if (arrCalEvents[i].id != event.id) {
            if ((event.end >= arrCalEvents[i].start && event.start <= arrCalEvents[i].end) || (event.end == null && (event.start >= arrCalEvents[i].start && event.start <= arrCalEvents[i].end))) {//!(Date(arrCalEvents[i].start) >= Date(event.end) || Date(arrCalEvents[i].end) <= Date(event.start))
                return true;
            }
        }
    }
    return false;
}

Answer 4

Same as ecruz's answer but with logic that worked better for me.

function isOverlapping(event){
    // "calendar" on line below should ref the element on which fc has been called 
    var array = calendar.fullCalendar('clientEvents');
    for(i in array){
        if (event.end >= array[i].start && event.start <= array[i].end){
           return true;
        }
    }
    return false;
}

Answer 5

allowCalEventOverlap: [boolean | default: false] – Whether the calendar will allow events to overlap. Events will be moved or resized if necessary if they are dragged or resized to a location that overlaps another calendar event.

is that what you were looking for?

Answer 6

Try this:

$('#calendar').fullCalendar({slotEventOverlap : false});

As per the documentation.