Question

我正在尝试创建一个取消功能，该功能根据其ID取消特定的观看。我有一个视图模型，可以从firebase中检索它作为可观察的模型，然后将其输入到子div中。问题是，当我单击“取消”时，它总是取消页面上的第一次查看，而不是我单击的特定视图。

奇怪的是，我在与模态组件相同的级别上创建了一个新组件，以完全相同的方式输入数据，并且效果很好。它似乎只与不起作用的模式有关。

    <div class="col-md-3 buttons" [hidden]='!hidden' [@sliderDiv]="out">
      <button class="button button-primary button-sm button-green text-center"  (click)="updateViewingStatus()">Update Time</button>
      <button data-toggle="modal" data-target="#cancelModal" class="button button-primary button-sm button-previous text-center">Cancel Viewing</button>
</div >
    <viewings-cancel-modal [viewings]="viewings"></viewings-cancel-modal>
    <testing-cancel  [viewings]="viewings"></testing-cancel>
</div>

在这里我将viewings属性输入到子组件中。两者相同。

这是我的测试逻辑（仅使用一个按钮），可以很好地工作：

export class TestingCancelComponent implements OnInit {
  @Input() viewings: TenantViewingModel;
  private viewingsId;
  constructor(private _viewings: ViewingsService) {  }

  ngOnInit() {
    this.viewingsId = this.viewings.viewings_id;
    console.log(this.viewings.viewings_id)
  }

  updateViewingStatus() {
    this._viewings.updateViewingStatus(this.viewingsId);
  }

 }

这是我的模态逻辑（不起作用）：

export class PropertyViewingsCancelModalComponent implements OnInit {
  @Input() viewings: TenantViewingModel;
  private viewingsId;
  constructor(private _viewings: ViewingsService) {  }

  ngOnInit() {
    this.viewingsId = this.viewings.viewings_id;
    // console.log(this.viewings.viewings_id)
  }

  updateViewingStatus() {
    this._viewings.updateViewingStatus(this.viewingsId);
  }


}

再次相同。工作按钮的html如下：

<button (click)="updateViewingStatus()"></button>

和非工作模式：

<div class="modal" id="cancelModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalCenterTitle" aria-hidden="true">
  <div class="modal-dialog modal-dialog-centered" role="document">
    <div class="modal-content">
      <div class="text-center modal_title"> Are you sure you want to </div>
        <h1 class="text-center" id="exampleModalLongTitle">Cancel Viewing? {{viewingsId}}</h1>
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
        </button>
      </div>
      <div class="modal-body">
        <div class="container">
          <img src="/assets/img/site/cancel.svg" alt="" style="height: auto; width: 100%; padding: 25px">
          <div class="row">
            <div class="col-md-6">
              <button data-dismiss="modal"  class="button button-primary button-xs button-previous text-center" (click)="updateViewingStatus()">confirm</button>
            </div>
            <div class="col-md-6 text-right">
              <button data-dismiss="modal" (click)="logViewings()"  class="button button-primary button-xs button-blue text-center">back</button>
            </div>
          </div>
        </div>
      </div>
    </div>
  </div>
</div>

因此，作为一个概括：按钮测试效果很好，可以删除我要删除或取消的特定视图。但是使用模式，即使逻辑相同，也只会删除页面上的第一个视图，并且我以完全相同的方式将数据传递给每个子组件。

Answer 1

这里有一些工作示例，让我们尝试一下，

HTML文件

 <!--Pass your id as argument to your method.-->
 <button (click)="onCancel(id)" class="button button-primary button-sm button-previous text-center">Cancel Viewing</button>

<!--This button has been hiden element is used to call your method -->
<button type="button" class="hideElement" data-toggle="modal" data-target="#cancelModal" #cancelModal></button>

 <viewings-cancel-modal [viewings]="viewings"></viewings-cancel-modal>

打字稿文件

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

@ViewChild('cancelModal') private cancelModal: ElementRef;

public onCancel(id:number) {      
       //set some global variable has been id value
        localstorage.setItem("Id",id); //here set value as local storage.
       this.viewings.viewings_id=id;
       this.cancelModal.nativeElement.click();   //then here iam doing call that modal
    }

模式打字稿文件

export class PropertyViewingsCancelModalComponent implements OnInit {
  @Input() viewings: TenantViewingModel;
  private viewingsId;
  constructor(private _viewings: ViewingsService) {  }

  ngOnInit() {
    //this.viewingsId = this.viewings.viewings_id;
     this.viewingsId = localstorage.getItem("Id"); //here iam getting id value in localstorage
    console.log("View Id",this.viewingsId) //here you getting your id you can proceed your process in modal button click time.
  }

  updateViewingStatus() {
    this._viewings.updateViewingStatus(this.viewingsId);
  }    
}

这是实现方便的简单逻辑。希望对您解决问题有帮助。

谢谢

Muthukumar

从父组件Angular 5将数据输入模态

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