FullCalendar事件DragStart ui为空

Question

我用eventStartDrag设置了一个完整的日历。当我对事件中的UI变量进行日志记录时，它似乎是空的。有什么原因吗？传递的所有其他变量都可以。

var date=新日期（）；var d=date.getDate（）；var m=date.getMonth（）；var y=date.getFullYear（）；

        $('#calendar').fullCalendar({
            header: {
                left: 'prev,next',
                center: 'title',
                right: 'month,agendaWeek,agendaDay'
            },
            defaultView: 'agendaWeek',
            editable: true,
            droppable: true, // this allows things to be dropped onto the calendar !!!
            drop: function (date) { // this function is called when something is dropped
                // retrieve the dropped element's stored Event Object
                var originalEventObject = $(this).data('eventObject');
                // we need to copy it, so that multiple events don't have a reference to the same object
                var copiedEventObject = $.extend({}, originalEventObject);
                // assign it the date that was reported
                copiedEventObject.start = date;
                $('#calendar').fullCalendar('renderEvent', copiedEventObject, true);
                // is the "remove after drop" checkbox checked?
                if ($('#drop-remove').is(':checked')) {
                    // if so, remove the element from the "Draggable Events" list
                    $(this).remove();
                }
            },
            eventResize: function (event, delta, revertFunc) {
                event.isChanged = true;
            },
            eventDrop: function (event, delta, revertFunc) {
                event.isChanged = true;
            },
            eventDragStart: function (event, jsEvent, ui, view) {
                console.log(event);
                console.log(jsEvent);
                console.log(ui);
                console.log(view);
                var dragged = [ui.helper[0], event];
            },
            events: [
                {% for timeEntry in timeEntries %}
                {
                    id: {{ timeEntry.id }},
                    title: '{{ timeEntry.task.description }}',
                    taskId: '{{ timeEntry.task.id }}',
                    start: '{{ timeEntry.startTime|date("Y-m-d\TH:i:s") }}',
                    {% if timeEntry.stopTime is not null %}
                    end: '{{ timeEntry.stopTime|date("Y-m-d\TH:i:s") }}',
                    {% else %}
                    end: null,
                    {% endif %}
                    isNew: false,
                    isChanged: false
                },
                {% endfor %}
            ]
        });

Answer 1

从2.1.1版本开始，jQueryUI不再是依赖项（请参阅发行说明）。

由于方法签名保持不变，您将在源代码中看到它总是传递一个空对象：

//(... fullCalendar 2.1.1 source code ...)
// line 4544
dragStart: function(ev) {
    _this.triggerSegMouseout(seg, ev); // ensure a mouseout on the manipulated event has been reported
    _this.isDraggingSeg = true;
    view.hideEvent(event); // hide all event segments. our mouseFollower will take over
    view.trigger('eventDragStart', el[0], event, ev, {}); // last argument is jqui dummy
},

当eventDragStart被触发时，最后一个参数是jqui dummy