我如何在不使用按钮单击的情况下以角度7打开模态，

Question

如何在不单击按钮的情况下以角度7打开模态。当我从API之一获得响应而不使用按钮单击时，我需要打开一个模式。我是新来的角度。我的HTML：

<ng-template #Qpaper let-c="close" let-d="dismiss">        
<div class="modal-header text-white" >
  <div class="modal-title " id="modal-basic-title" >
    <h4>Draft  Selected Question</h4>
  </div>
  <button type="button" class="close text-white" aria-label="Close" (click)="d('Cross click')">
    <span aria-hidden="true">&times;</span>
  </button>
</div>
<div class="modal-body  p-0">
   <p>q paper preview </p>
</div>
<div class="modal-footer">
  <button type="button" class="btn btn-secondary" data-dismiss="modal" (click)="d('Cross click')">Cancel</button>
</div> 

我已经尝试过以下代码来触发模式事件：

this.modalService.open('Qpaper');
this.modalService.open(data.response , Qpaper)

Answer 1

您可以看到此示例https://stackblitz.com/edit/angular-modal-service?file=app%2Fapp.component.ts

然后在不单击按钮的情况下调用onCreateModal()中的AppComponent，您可以打开模态

Answer 2

您需要使用View Child并从模板中获取引用。

@ViewChild('Qpaper') private qpaper;

不要忘记导入ViewChild。

import { ViewChild } from '@angular/core';

最后您可以简单地做到这一点

this.modalService.open(qpaper);

Answer 3

您可以将模式包装在它自己的组件中。

my-modal.component.ts

import { Component, OnInit, Input } from '@angular/core';

import {NgbActiveModal} from '@ng-bootstrap/ng-bootstrap';

@Component({
  selector: 'app-my-modal',
  templateUrl: './my-modal.component.html',
  styleUrls: ['./my-modal.component.css']
})
export class MyModalComponent implements OnInit {
  @Input() response: any;

  constructor() { }

  ngOnInit() {
  }
}

my-modal.component.html

<div class="modal-header text-white" >
  <div class="modal-title " id="modal-basic-title" >
    <h4>Draft  Selected Question</h4>
  </div>    
  <button type="button" class="close" aria-label="Close" (click)="activeModal.dismiss('Cross click')">
    <span aria-hidden="true">&times;</span>
  </button>
</div>
<div class="modal-body  p-0">
   <p>q paper preview </p>
   <p class="card-text">ID: {{ response.id }}</p>
   <p class="card-text">Title: {{ response.title }}</p>
   <p class="card-text">Value: {{ response.value }}</p>
</div>
<div class="modal-footer">
    <button type="button" class="btn btn-secondary" data-dismiss="modal" (click)="activeModal.close('Close click')">Cancel</button>
</div>

然后可以将其导入父组件并根据要求打开。对于您而言，来自API请求的有效响应。

父组件

import { NgbModal } from '@ng-bootstrap/ng-bootstrap';

import { MyModalComponent } from './my-modal/my-modal.component';

export class AppComponent implements OnInit {
  constructor(private modalService: NgbModal) { }

  ngOnInit() {
    this._apiService.getDetails().subscribe(
      response => {
        this.openMyModal(response);
      },
      error => {
        console.error('Unable to retrieve data from API: ', e);
      }
    );
  }

  openMyModal(response: any) {
    const modalRef = this.modalService.open(MyModalComponent);
    modalRef.componentInstance.response = response;
  }
}

当您从API请求收到有效响应时，再调用openMyModal()函数。

此方法的一个优点是，与其他任何组件一样，它允许您在父组件中打开所需数量的模态。