从子组件

Question

我将数据保存到数据库后有一个场景我需要关闭Bs-modal弹出窗口，我的保存是在子组件中完成的，所以我使用（）输入了子组件中的Bs-modal并使用那里隐藏弹出窗口但无法在子组件中读取我的模态

HTML父组件

<div bsModal #lgModal2="bs-modal" class="modal fade" tabindex="-1" 
     role="dialog" aria-labelledby="myLargeModalLabel" aria-hidden="true">
      <div class="modal-dialog modal-lg">
        <div class="modal-content">
          <div class="modal-header">
          <h4 class="modal-title pull-left">Edit Product</h4>
          <button type="button" class="close pull-right" (click)="lgModal2.hide()" aria-label="Close">
          <span aria-hidden="true">&times;</span>
          </button>
          </div>
           <div class="modal-body">
           <app-edit-product [productId]="prodId" [modalId]="lgmodal2" #child ></app-edit-product>

           </div>
       </div>
     </div>
   </div>

子组件TS

import { BsModalRef } from 'ngx-bootstrap';
export class EditProductComponent implements OnInit {
  @Input() modalId:BsModalRef;
  somefunction(){
    this.modalId.hide();
  }
}

  

错误：发生了意外错误！TypeError：无法读取未定义的属性“hide”

也尝试了

@Output() closeModal:EventEmitter<Event> = new EventEmitter();
@Input() onHide:any;

然后

 somefunction(){
   this.closeModal.emit(this.onHide);
  }

任何帮助都将非常感谢！

Answer 1

HTML Parent ：

<div bsModal #lgModal2="bs-modal" class="modal fade" tabindex="-1" 
     role="dialog" aria-labelledby="myLargeModalLabel" aria-hidden="true">
      <div class="modal-dialog modal-lg">
        <div class="modal-content">
          <div class="modal-header">
          <h4 class="modal-title pull-left">Edit Product</h4>
          <button type="button" class="close pull-right" (click)="hideModal()" aria-label="Close">
          <span aria-hidden="true">&times;</span>
          </button>
          </div>
           <div class="modal-body">
           <app-edit-product [productId]="prodId" [modalId]="lgmodal2" (saveDone)="hideModal()" #child ></app-edit-product>

           </div>
       </div>
     </div>
   </div>

儿童成员TS：

export class EditProductComponent implements OnInit {
  @Output() saveDone: EventEmitter<any> = new EventEmitter<any>();
  somefunction(){
    this.saveDone.emit();
  }
}

PARENT COMPONENT TS：

import { Component, ViewChild } from '@angular/core';
import { ModalDirective } from 'ngx-bootstrap/modal';
export class ParentComponent implements OnInit {
    @ViewChild('lgModal2') lgModal2: ModalDirective;
    hideModal(){
       this.lgModal2.hide();
    }
}

希望这有帮助。

Answer 2

您需要传递事件而不是Modal本身：

<app-edit-product [productId]="prodId" (onHide)="lgModal2.hide()" #child ></app-edit-product>

然后在子组件上处理它：

@Input()
onHide = new EventEmitter<void>();

doHide() {
  this.onHide.emit();
}