Angular 2 ng-bootstrap模式:如何将数据传递到入口组件 [英] Angular 2 ng-bootstrap Modal: How to pass data to entry component

问题描述

我正在尝试将数据发送到自定义模式内容组件，因此我可以从任何其他组件中调用它，而无需重复代码.我是Angular 2的新手，并且已经按照ng-boostrap的作为内容的组件"演示以及Angular文档中的组件交互"进行了演示，但是还没有找到一种使之有效的方法或本例的示例

I'm trying to send data to a custom modal content component so I can call it from any other component and not repeat code. I'm new to Angular 2 and have followed the "Components as content" demo of ng-boostrap as well as the "Component Interaction" in the Angular docs and have not found a way to get this to work or an example for this case.

我可以打开模式，但不能包含动态内容.我尝试了@Input和可变方法，但没有成功.我还已将ModalService添加到app.module.ts中的提供程序.这是我无法使用的两种方法的结果:

I can get the modal to open, but not with dynamic content. I've tried the @Input and the variable approach with no success. I've also added ModalService to the providers in app.module.ts. This is what I have with both approaches that doesn't work:

page.component.html:

page.component.html:

<a (click)="modal('message')">
<template ngbModalContainer><my-modal [data]="data"></my-modal></template>

page.component.ts:

page.component.ts:

import { Component } from '@angular/core'
import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
import { ModalService } from '../helpers/modal.service'
import { ModalComponent } from '../helpers/modal.component'

@Component({
  selector: 'app-page',
  templateUrl: './page.component.html',
  styleUrls: ['./page.component.scss'],
  entryComponents: [ ModalComponent ]
})

export class PageComponent {
  data = 'customData'
  constructor (
    private ngbModalService: NgbModal,
    private modalService: ModalService
   ) { }

  closeResult: string
  modal(content) {
    this.data = 'changedData'
    this.modalService.newModal(content)
    this.ngbModalService.open(ModalComponent).result.then((result) => {
      this.closeResult = `Closed with: ${result}`
    }, (reason) => {
      this.closeResult = `Dismissed ${reason}`
    });
  }
}

modal.service.ts:

modal.service.ts:

import { Injectable } from '@angular/core';
import { Subject }    from 'rxjs/Subject';

@Injectable()
export class ModalService {
  private modalSource = new Subject<string>()
  modal$ = this.modalSource.asObservable()
  newModal(content: string) {
    this.modalSource.next(content)
  }
}

modal.component.ts:

modal.component.ts:

import { Component, Input, OnDestroy } from '@angular/core';
import { Subscription }   from 'rxjs/Subscription';
import { ModalService } from './modal.service'

@Component({
  selector: 'my-modal',
  template: `
    <div class="modal-body">
    {{data}}
    {{content}}
    </div>
  `
})

export class ModalComponent implements OnDestroy {
  @Input() data: string
  content = 'hello'

  subscription: Subscription
  constructor(
    private modalService: ModalService
  ) {
    this.subscription = modalService.modal$.subscribe(
      content => {
        this.content = content
    });
  }

  ngOnDestroy() {
    this.subscription.unsubscribe();
  }
}

使用angular v2.1.0，angular-cli v1.0.0-beta.16，ng-bootstrap v1.0.0-alpha.8

Using angular v2.1.0, angular-cli v1.0.0-beta.16, ng-bootstrap v1.0.0-alpha.8

推荐答案

只需提供一项服务并将其注入到VideoModalComponent和PageComponent中，您就可以使用此服务进行通信.

Just provide a service and inject it to VideoModalComponent and PageComponent then you can use this service to communicate.

请参见 https://angular.io /docs/ts/latest/cookbook/component-communication.html#!#bidirectional-service 了解更多详细信息和示例.

See https://angular.io/docs/ts/latest/cookbook/component-communication.html#!#bidirectional-service for more details and examples.

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