FullCalendar Drop外部事件还原功能

Question

我正在尝试使用fullcalendar库创建事件日历并遵循演示external-dragging，我理解该概念只是想知道如何执行还原功能，如果我按下取消删除事件，则会将返回其原始位置。

我正在使用sweetalert2库替换默认JavaScript警报，以下是我的代码。

$('#calendar').fullCalendar({
            header: {
                left: 'prev,next today',
                center: 'title',
                right: 'month'
            },
            editable: true,
            eventConstraint: {
            start: moment().format('YYYY-MM-DD'),
            end: '2100-01-01' // hard coded goodness unfortunately
            },
            droppable: true, // this allows things to be dropped onto the calendar
            drop: function() {
                // is the "remove after drop" checkbox checked?
                if ($('#drop-remove').is(':checked')) {
                    // if so, remove the element from the "Draggable Events" list
                    $(this).remove();
                }
                swal({
                    title: 'Are you sure?',
                    text: "You want to change this event schedule?",
                    type: 'warning',
                    showCancelButton: true,
                    confirmButtonColor: '#3085d6',
                    cancelButtonColor: '#d33',
                    confirmButtonText: 'Yes, proceed'
                  }).then(function (result) {
                    if (result.value) {

                      swal(
                        'Success!',
                        'The event schedule was successfully changed to ',
                        'success'
                      )

                    }else{
                      revertFunc();
                    }
                  })
                 //end of drop  
            },

revertFunc();仅在eventDrop上可用，但我无知如何在drop事件上实施，任何建议都很棒

Answer 1

" drop"回调中没有" revertFunc（）"。它只是不存在。

我的解决方法（FullCalendar V4）是管理EventLeave和EventReceive：在第一个保存原始事件中，在第二个事件中，在第二个事件中删除了新事件并还原原始事件。

在这里简化版本：

// to map original events (event.id => event)
_oldEventsInfo = new Map();
eventLeaveHandler(info) {
    _oldEventsInfo.set(info.event.id, info);
}
eventReceiveHandler(info) {
    if (/* for any reason cannot be moved */) {
        this.revert(info);
    } else {
        _oldEventsInfo.delete(info.event.id);
    }
}
revert(info) {
    var oldInfo = _oldEventsInfo.get(info.event.id);
    if (oldInfo) {
        // build a new event to restore in the original calendar
        var oldCalendar = oldInfo.event._calendar;
        var restoredEvent = {
            id: oldInfo.event.id,
            // etc
        };
        oldCal.addEvent(restoredEvent);
        // delete the destination (dragged) event from dest calendar
        info.event._calendar.getEventById(info.event.id).remove();
        // remove the old event from my saved
        _oldEventsInfo.delete(info.event.id);
    }
}

Answer 2

在V5中有"恢复"在EventDrop上的功能。

在React中，您可以将此回调存储为参考变量

  const revertDropEvent = useRef<() => void>();
  const handleDropEvent = ({ event, revert }: EventDropArg) => {
      revertDropEvent.current = revert;
  }
  
  const handleCancelDrop = () => {
      if (revertDropEvent.current) revertDropEvent.current();
  }
  return (
  <div>
    <FullCalendar
       eventDrop={handleDropEvent}
       /* ... */
    />
    <ConfirmationModal onClose={handleCancelDrop}/>
  </div>