reactjs - React BigCalendar 拖放示例不起作用

Question

我刚刚浏览了 BigCalendar 拖放示例 HERE 。我尝试自己创建一个拖放的本地示例，只是为了看看拖放如何与 BigCalendar 配合使用。我创建了以下内容:

Dnd.js

import React from 'react'
import events from './events'
import HTML5Backend from 'react-dnd-html5-backend'
import { DragDropContext } from 'react-dnd'
import BigCalendar from 'react-big-calendar'
import withDragAndDrop from 'react-big-calendar/lib/addons/dragAndDrop';
import 'react-big-calendar/lib/css/react-big-calendar.css';

import 'react-big-calendar/lib/addons/dragAndDrop/styles.less';

const DragAndDropCalendar = withDragAndDrop(BigCalendar)

class Dnd extends React.Component {
  constructor(props) {
    super(props)
    this.state = {
      events: events,
    }

    this.moveEvent = this.moveEvent.bind(this)
  }

  moveEvent({ event, start, end }) {
    const { events } = this.state

    const idx = events.indexOf(event)
    const updatedEvent = { ...event, start, end }

    const nextEvents = [...events]
    nextEvents.splice(idx, 1, updatedEvent)

    this.setState({
      events: nextEvents,
    })

    alert(`${event.title} was dropped onto ${event.start}`)
  }

  resizeEvent = (resizeType, { event, start, end }) => {
    const { events } = this.state

    const nextEvents = events.map(existingEvent => {
      return existingEvent.id == event.id
        ? { ...existingEvent, start, end }
        : existingEvent
    })

    this.setState({
      events: nextEvents,
    })

    alert(`${event.title} was resized to ${start}-${end}`)
  }

  render() {
    return (
      <DragAndDropCalendar
        selectable
        events={this.state.events}
        onEventDrop={this.moveEvent}
        resizable
        onEventResize={this.resizeEvent}
        defaultView="week"
        defaultDate={new Date(2015, 3, 12)}
      />
    )
  }
}

export default DragDropContext(HTML5Backend)(Dnd)

index.js

import React from 'react';
import ReactDOM from 'react-dom';
import Knight from './knight/knight';
import Square from './square/square';
import Board from './board/board';
import Dnd from './bigcalender/dnd';
import { moveKnight , observe } from './game';
import BigCalendar from 'react-big-calendar'
import SimpleDrag from './simpleDrag/simpleDrag';
import moment from 'moment';

BigCalendar.momentLocalizer(moment);

const rootEl = document.getElementById('root');

ReactDOM.render(
    <Dnd />,
    rootEl
)

日历显示所有事件都很好，问题是拖放功能不太有效。该代码几乎是从 BigCalendar drag and drop source code 的来源复制粘贴的。 。那么为什么拖放示例在我的项目中不起作用？

我在本地创建的示例也可以在我的存储库中看到 here .

Answer 1

create-react-app 中似乎不支持 LESS默认情况下，所以 .less导入dragAndDrop在你的Dnd.js不管用。

您可以在项目中设置 LESS，也可以只导入 .css直接文件，因为它已经存在。

要使用.css文件，在您的 dnd.js 中文件，更改此导入...

import 'react-big-calendar/lib/addons/dragAndDrop/styles.less';

对此...

import 'react-big-calendar/lib/addons/dragAndDrop/styles.css';