如何从此 PrimeNG FullCalendar 中动态删除事件（单击事件）？

Question

我正在开发一个使用 PrimeNG 完整日历组件的 Angular 应用程序，这个：https://primefaces.org/primeng/showcase/#/fullcalendar

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

在这里你可以找到我的全部代码：https://bitbucket.org/dgs_poste_team/soc_calendar/src/master/

所以我有一个这样的日历：

我在这个阶段试图实现的是当用户点击一个特定的事件时，这个日历中的所有事件都将被删除（在第二阶段我将实现只有特定的点击事件将被删除已删除，但目前我尽量保持逻辑简单。

所以这是 class 控制我的日历组件：

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;

  calendar:any;


  constructor(private eventService: EventService) {}

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

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

      //let events = this.calendar.getEvents();
      //events[

      console.log("EVENTS: " + this.events);

      if(hour === 7) {
        event['backgroundColor'] = 'red';
      }
      else if(hour === 15) {
        event['backgroundColor'] = 'green';
      }
      else if(hour === 23) {
        event['backgroundColor'] = '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: '09:00:00',
        allDayDefault: false,

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

        eventClick: (eventClickEvent) => {
          console.log("EVENT CLICKED !!!");
          console.log(eventClickEvent.event.id);
          //this.eventService.removeEventById(eventClickEvent.event.id);
          this.eventService.removeEventById(eventClickEvent.event.id).subscribe(events => console.log(events));


            /*
            events => { this.events = events.map((event) => {
            var date = new Date(event.start);
            var hour = date.getHours();

            console.log("EVENTS: " + this.events);

            if(hour === 7) {
              event['backgroundColor'] = 'red';
            }
            else if(hour === 15) {
              event['backgroundColor'] = 'green';
            }
            else if(hour === 23) {
              event['backgroundColor'] = 'black';
            }

            return event;
          })});
          */
        },

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

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



          //eventReceiveEvent['backgroundColor'] = 'red';
          this.eventService.addEvent(eventReceiveEvent);
        }
    };

  }

  ngAfterViewInit() {

    this.calendar = this.fullcalendar.getCalendar();
    console.log("CALENDAR: " + this.calendar);

  }

}

正如您在 ngOnInit() 方法中看到的那样，我正在订阅 getEvents() 服务的方法 return 作为 Observable 的渲染事件列表（我这样做是因为在 returned 输出中我为不同的事件类型处理不同的颜色，但这与我的问题并不严格相关......它有效很好）。

因此，如您所见，此组件 class 包含此挂钩方法 eventClick: (eventClickEvent) 处理对我日历事件的点击。我正在考虑调用定义到我的服务中的删除事件方法并再次呈现它，但它不起作用（我已经尝试了几次但它不起作用）。我也不确定这是解决问题的正确方法。

根据我对 ngOnInit() 方法的理解，我订阅了我的日历事件数组，因此链接此数组的内容，此更改已发布并且应该再次渲染，我也尝试了这个但是它不起作用......所以我认为我可能在 Angular 逻辑中遗漏了一些东西。

这是我的服务代码class:

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

@Injectable()
export class EventService {

  private events = [];

  /*
  private events = [
    {id: 1, title: 'All Day Event', start: '2017-02-01'},
    {id: 2, title: 'Long Event', start: '2017-02-07', end: '2017-02-10'},
    {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(): Observable<any[]> {
    return this.eventData.asObservable();
  }


  addEvent(event) {
    //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]);
    //console.log(this.events);
  }

  removeEventById(id:number): Observable<any[]>  {
    console.log("EVENTDATA: " + this.eventData.getValue());

    return this.eventData.asObservable();
  }


  /*
  removeEventById = (id:number) => {
    this.events = [];
    //return this.events.filter(each=>each.id!=id);

  }
  */

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

}

所以怎么了？我错过了什么？什么是正确处理我的问题的明智解决方案？

Answer 1

从fullcalendar.io开发的primeng fullcalendar，您可以过滤数据然后分配给eventData。我在 Demo

中创建了您的代码

 this.eventService.removeEventById(eventClickEvent.event.id).subscribe(events => console.log(events));

在你的方法中

removeEventById(id:number): Observable<any[]>  {
    this.events=this.events.filter(each=>each.id!=id);
    this.eventData.next([...this.events]);
    return this.eventData.asObservable();
}

Answer 2

当您使用 Observables 时，您可以将 map 运算符与 Array.prototype.filter 结合使用：

import { Injectable } from '@angular/core';
import { BehaviorSubject, Observable } from 'rxjs';
import { map } from 'rxjs/operators';

removeEventById(id:number): Observable<any[]>  {    
    return this.getEvents()
        .pipe(
            map(items => items.filter(item => item.id == id))
        );    
}

The whole work example can be seen at the stackblitz.

因此您的服务可能如下所示：

@Injectable()
export class MyServices {
    private events = [
        {   
          id: 1,
          title: 'Foo 1',
          date: '2020-06-07'
        },
        {
          id: 2,
          title: 'Foo 2',
          date: '2020-06-08'
        },
        {
          id: 3,
          title: 'Foo 3',
          date: '2020-06-05'
        }
    ];

    public eventData = new BehaviorSubject(this.events);

    constructor() { }

    sayHello() {        
        console.log("Say Hello");
    }

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


  addEvent(event) {
    const newEvent = {id: 5, title: event.event.title, 
        start: event.event.start, end: event.event.end};
    this.events.push(newEvent);
    this.eventData.next(Object.assign({}, this.events));
  }

  removeEventById(id:number): Observable<any[]>  {    
    return this.getEvents()
      .pipe(
        map(items => items.filter(item => item.id == id))
      );    
  }    
}

和your.component.ts可能看起来像这样：

export class AppComponent implements OnInit {
    options: any;
    eventsModel: any;
    @ViewChild('fullcalendar') fullcalendar: FullCalendarComponent;
    @ViewChild('external') external: ElementRef;

    constructor(private myServices: MyServices){
        this.myServices.sayHello();
    }

    eventClick(model) {
        this.myServices.removeEventById(model.id)
            .subscribe(s => this.eventsModel = s);       
    }

Answer 3

所以你应该准备好一些东西。

删除所有事件。

在events.service

public deleteEvents() {
   this.events = [];
   this.eventData.next(this.events);
 }

在fullCalendar.component.ts fullCalendar 选项中：-

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

用于删除特定事件。

首先，在您的日历中，每个事件都应该有一个唯一的 ID。目前在您的 addEvent 方法中，您为每个事件提供了相同的 Id。即 5. 首先让我们解决这个问题。

public currentId = 1;

public addEvent() {
      const newEvent = {id: this.currentId++, title: event.event.title, start: event.event.start, end: event.event.end};
   //Remaining Add Event Code.
}

这样，无论何时将事件添加到您的日历中，您都会有一个唯一的事件 ID。

现在，在单击事件时，您正在调用一个方法，即 removeEventById()。那应该写成：-

removeEventById(id): Observable<any[]>  {
    this.events = this.events.filter((event) => event.id!==+id);
    this.eventData.next(this.events);
    return this.eventData.asObservable();
}

注意：- 您从事件点击对象收到的 ID 是字符串，您在数组中的 ID 是数字。因此，我在上面的 id 中添加了 + 以解析它的数量以匹配 id 并删除必要的项目。没有它，删除将无法进行。

在fullCalendar.component.ts fullCalendar 选项中：-

eventClick: (eventClickEvent) => {
      console.log("EVENT CLICKED !!!");        
 this.eventService.removeEventById(eventClickEvent.event.id).subscribe(events => console.log(events));
    }

如何从此 PrimeNG FullCalendar 中动态删除事件（单击事件）？

How can I dynamically delete events from this PrimeNG FullCalendar (clicking on an event)?

fullcalendar

primeng

angular