javascript - 如何动态更改 Angular FullCalendar 事件颜色(特定事件)？

Question

我正在使用 PrimeNG Full Calendar 组件开发一个 Angular 应用程序，这个:https://primefaces.org/primeng/showcase/#/fullcalendar

这是基于 Angular FullCalendar 组件的，这个:https://fullcalendar.io/

在这里你可以找到我的完整代码:https://bitbucket.org/dgs_poste_team/soc_calendar/src/master/

我在尝试动态更改日历上呈现的事件的背景颜色时发现了一些困难。我必须根据不同的事件信息(开始事件时间)有不同的事件背景颜色，例如:如果一个事件从 07:00 开始是绿色，如果它从 15:00 开始它是红色，如果它从 23 开始: 00 它是蓝色的，但此时这个逻辑并不重要)。

在我的项目中，我将外部事件拖到我的日历中，如下所示:https://fullcalendar.io/docs/external-dragging-demo

所以我想要的是，当我将一个事件拖到我的日历中时，它的背景将具有基于开始时间的特定颜色。

所以，正如您在我的 BitBucket 存储库中看到的，我有这个 完整日历组件 处理包含从外部组件接收事件的日历的组件:

import { Component, OnInit, ViewChild, ElementRef } from '@angular/core';
import { EventService } from '../event.service';
import dayGridPlugin from '@fullcalendar/daygrid';
import timeGridPlugin from '@fullcalendar/timegrid';
import listPlugin from '@fullcalendar/list';
import interactionPlugin, { Draggable } from '@fullcalendar/interaction';
import { FullCalendar } from 'primeng';

@Component({
  selector: 'app-fullcalendar',
  templateUrl: './fullcalendar.component.html',
  styleUrls: ['./fullcalendar.component.css']
})
export class FullcalendarComponent implements OnInit {

  events: any[];
  options: any;
  header: any;

  //people: any[];

  @ViewChild('fullcalendar') fullcalendar: FullCalendar;


  constructor(private eventService: EventService) {}

  ngOnInit() {
    this.eventService.getEvents().then(events => { this.events = events;});

    this.options = {
        plugins:[ dayGridPlugin, timeGridPlugin, interactionPlugin, listPlugin ],
        defaultDate: '2017-02-01',
        header: {
            left: 'prev,next',
            center: 'title',
            right: 'dayGridMonth,timeGridWeek,timeGridDay'
        },
        editable: true,
        nextDayThreshold: '06:00:00',
        //eventColor: '#378006',

        dateClick: (dateClickEvent) =>  {         // <-- add the callback here as one of the properties of `options`
          console.log("DATE CLICKED !!!");
        },

        eventClick: (eventClickEvent) => {
          console.log("EVENT CLICKED !!!");
        },

        eventDragStop: (eventDragStopEvent) => {
          console.log("EVENT DRAG STOP !!!");
        },

        eventReceive: (eventReceiveEvent) => {
          console.log(eventReceiveEvent);
          eventReceiveEvent.event.setAllDay(false, {maintainDuration: true});
          eventReceiveEvent.eventColor = '#378006';
          eventReceiveEvent.event.eventColor = '#378006';
          eventReceiveEvent.event.css('background-color', '#378006');
          this.eventService.addEvent(eventReceiveEvent);
        }
    };

  }

}

我发现添加这个选项 事件颜色:'#378006'，我可以更改默认事件背景颜色...但是这样它是静态的，我无法为不同类型的事件处理不同的颜色(我只是更改所有事件的默认颜色，所以这对我的用例)。

我有这个方法用于修改拖到我的日历中的事件:

eventReceive: (eventReceiveEvent) => {
  console.log(eventReceiveEvent);
  eventReceiveEvent.event.setAllDay(false, {maintainDuration: true});
  eventReceiveEvent.eventColor = '#378006';
  eventReceiveEvent.event.eventColor = '#378006';
  eventReceiveEvent.event.css('background-color', '#378006');
  this.eventService.addEvent(eventReceiveEvent);
}

我在想它可能是放置这种行为的一个很好的候选位置......正如你在我的代码中看到的那样，我尝试使用某种方法来设置事件颜色，但它不起作用......我仍然获得呈现我的页面时的默认事件颜色。

为什么？怎么了？我错过了什么？如何获得所需的行为并通过代码设置事件颜色？

Answer 1

每个事件都支持一个属性 backgroundColor 来决定事件的背景颜色。

在这里查看:- https://fullcalendar.io/docs/event-object

为了在添加事件时自动进行此颜色决策，我将您服务中的 promise 更改为可观察。每当您通过 addevent 服务方法推送新事件时。您在组件的 ngoninit 中的订阅将接收更新的数据并应用背景颜色。这也将防止您的原始数据发生变化，因为只有您的组件需要这种颜色来显示。不是您的原始数据。

服务变化:-

  1. public eventData = new BehaviorSubject(this.events);
  2. getEvents(): Observable<any[]> {
      return this.eventData.asObservable();
     }
  3. addEvent(event) {
      //this.events.push(event);
      //console.log("EVENT:")
      //console.log(event.event.title);
      console.log(event.event.start);
      console.log(event);
      const newEvent = {id: 5, title: event.event.title, start: event.event.start, end: event.event.end};
      this.events.push(newEvent);
      this.eventData.next([...this.events]);
     }

更改后的完整服务:-

import { Injectable } from '@angular/core';
//import { Http } from '@angular/http';
import { HttpClientModule, HttpClient } from '@angular/common/http'
import { BehaviorSubject, Observable } from 'rxjs';

@Injectable()
export class EventService {

  private events = [
    {id: 1, title: 'All Day Event', start: '2017-02-01'},
    {id: 2, title: 'Long Event', start: '2017-02-07', end: '2017-02-10T7:00:00'},
    {id: 3, title: 'Repeating Event', start: '2017-02-09T16:00:00'},
    {id: 3, title: 'test', start: '2017-02-20T07:00:00'},
  ];

  private people = [
    {id: 1, name: "PERSONA 1"},
    {id: 2, name: "PERSONA 2"},
    {id: 3, name: "PERSONA 3"},
    {id: 4, name: "PERSONA 4"},
    {id: 5, name: "PERSONA 5"},
  ]

  public eventData = new BehaviorSubject(this.events);


  constructor(private http: HttpClient) {}

  /*
  getEvents(): Promise<any[]> {
    return this.http.get('assets/json_mock/calendarevents.json')
      .toPromise()
      .then(res => JSON.parse(JSON.stringify(res)).data)
      .then(res => {
        console.log(res);
        // you returned no value here!
        return res;
      })
  }
  */

getEvents(): Observable<any[]> {
  return this.eventData.asObservable();
}

addEvent(event) {
  //this.events.push(event);
  //console.log("EVENT:")
  //console.log(event.event.title);
  console.log(event.event.start);
  console.log(event);
  const newEvent = {id: 5, title: event.event.title, start: event.event.start, end: event.event.end};
  this.events.push(newEvent);
  this.eventData.next([...this.events]);
}

getPeople(): Promise<any[]> {
  return Promise.all(this.people)
      .then(res => {
        console.log(res);
        return res;
      })
}

}

在您的 fullcalendar.component.ts 中，您可以更改可观察到的颜色，您可以在其中接收来自服务的事件，例如:-

this.eventService.getEvents().subscribe(events => { this.events = events.map((event) => {
  var date = new Date(event.start);
  var hour = date.getHours();
  event['backgroundColor'] = hour === 5? 'red': (hour === 7 ? 'green' : 'black');
  return event;
})});

输出 :-



更改后的完整 fullcalendar.component.ts:-

import { Component, OnInit, ViewChild, ElementRef } from '@angular/core';
import { EventService } from '../event.service';
import dayGridPlugin from '@fullcalendar/daygrid';
import timeGridPlugin from '@fullcalendar/timegrid';
import listPlugin from '@fullcalendar/list';
import interactionPlugin, { Draggable } from '@fullcalendar/interaction';
import { FullCalendar } from 'primeng';

@Component({
  selector: 'app-fullcalendar',
  templateUrl: './fullcalendar.component.html',
  styleUrls: ['./fullcalendar.component.css']
})
export class FullcalendarComponent implements OnInit {
  //backgroundColor
  events: any[];
  options: any;
  header: any;

  //people: any[];

  @ViewChild('fullcalendar') fullcalendar: FullCalendar;


  constructor(private eventService: EventService) {}

  ngOnInit() {
    this.eventService.getEvents().subscribe(events => { this.events = events.map((event) => {
      var date = new Date(event.start);
      var hour = date.getHours();
      event['backgroundColor'] = hour === 5? 'red': (hour === 7 ? 'green' : 'black');
      return event;
    })});

    this.options = {
        plugins:[ dayGridPlugin, timeGridPlugin, interactionPlugin, listPlugin ],
        defaultDate: '2017-02-01',
        header: {
            left: 'prev,next',
            center: 'title',
            right: 'dayGridMonth,timeGridWeek,timeGridDay'
        },
        editable: true,
        nextDayThreshold: '06:00:00',

        dateClick: (dateClickEvent) =>  {         // <-- add the callback here as one of the properties of `options`
          console.log("DATE CLICKED !!!");
        },

        eventClick: (eventClickEvent) => {
          console.log("EVENT CLICKED !!!");
        },

        eventDragStop: (eventDragStopEvent) => {
          console.log("EVENT DRAG STOP !!!");
        },

        eventReceive: (eventReceiveEvent) => {
          console.log(eventReceiveEvent);
          eventReceiveEvent.event.setAllDay(false, {maintainDuration: true});
          this.eventService.addEvent(eventReceiveEvent);
        }
    };

  }

}

我将服务中的事件时间修改为以下，以实现图像中的输出。

private events = [
    {id: 1, title: 'All Day Event', start: '2017-02-01'},
    {id: 2, title: 'Long Event', start: '2017-02-07', end: '2017-02-10T7:00:00'},
    {id: 3, title: 'Repeating Event', start: '2017-02-09T16:00:00'},
    {id: 3, title: 'test', start: '2017-02-20T07:00:00'},
  ];