Angular 2 Nested Modal Dialog with PrimeNG doesn't work

问题

I am using the PrimeNG dialog component and I have a modal dialog from which, on the click of a button, I want to show another modal dialog.

What is happening is that my second modal dialog is not really modal, because I only see the content of the dialog following the button.

I do change [appendTo] attribute of the p-dialog for the second modal dialog but it does not seem to work properly.

How can I open nested dialog in a p-dialog?

Dialog in a angular 2 component:

<p-dialog header="Create/Edit Financial Flow"  [visible]="display$ | async" modal="modal" width="500" height="600" responsive="true" [resizable]="false" [closable]="false">
<financial-flowdialog #myfinancialflowdialog (onCloseDialog) ="closeDialog()" [flowdata]="selectedFlows$ | async"></financial-flowdialog>
</p-dialog>

When clicking a button whithin the first modal dialog, should open a second dialog. Below the definition of the nested dialog:

    <p-dialog header="Title" [(visible)]="display" [appendTo]="body" *ngIf="display" modal="modal" width="500" height="600" responsive="true"
        [resizable]="false" [closable]="false">
        <div class="container-fluid">
            <form (ngSubmit)="onSubmit()">

                <div class="pull-right top-buffer ">
                    <button type="button" class="btn btn-primary" (click)="closeDialog()">Cancel</button>
                    <button type="submit" class="btn btn-primary">Select</button>
                </div>
            </form>
        </div>
    </p-dialog>
    <button type="button" #mybtn [value]="value" ngDefaultControl [formControlName]="key" [id]="key" [ngStyle]="style" (click)="openDialog()">{{label}}</button>

I can open the first dialog but when I click on the button to open the second dialog, the content of dialog shows up like a normal div. Below the html rendered:

<section>
    <div id="nestediag" ng-reflect-form="[object Object]" class="ng-pristine ng-invalid ng-touched">
        <!--template bindings={
  "ng-reflect-ng-if": "true"
}--><p-dialog header="Title" height="600" modal="modal" responsive="true" width="500" ng-reflect-visible="true">
            <div class="container-fluid">
                <form class="ng-untouched ng-pristine ng-valid">

                    <div class="pull-right top-buffer ">
                        <button class="btn btn-primary" type="button">Cancel</button>
                        <button class="btn btn-primary" type="submit">Select</button>
                    </div>
                </form>
            </div>
        </p-dialog>
        <button ngdefaultcontrol="" type="button" value="Select a payee" ng-reflect-name="flowpayee" ng-reflect-ng-style="[object Object]" ng-reflect-value="Select a payee" ng-reflect-id="flowpayee" id="flowpayee" class="ng-pristine ng-valid ng-touched" style="width: 100%;">Select a payee</button>
    </div>
</section>

回答1:

You can solve this problem by appending the second dialog to the document body by using the appendTo attribute, e.g.

<p-dialog appendTo="body">
...
</p-dialog>

回答2:

Defining a componentref variable and using [appendTo]="Componentref" solve the issue. See discussion https://github.com/primefaces/primeng/issues/656

回答3:

This worked for me

<p-dialog #parentDialog id='parentDialog' name='parentDialog' header='Parent Dialog #1' modal='modal' [(visible)]='display1'>
  <p>A B C D E F G H I J K L M N O P Q R S T U V W X Y Z</p>
  <p-dialog #childDialog header='Child Dialog #2' modal='modal' [(visible)]='display2' appendTo='body'>
    1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 
    <p-footer>
      <button pButton type='button' (click)='display2=false' class='ui-button-primary' label='Close'></button>
    </p-footer>
  </p-dialog>
  <button type='text' (click)='showDialog2()' pButton icon='fa-external-link-square' label='Show'></button>
</p-dialog>
<button type='text' (click)='showDialog1()' pButton icon='fa-external-link-square' label='Show'></button>

and the typescript:

  display1: boolean = false;
  showDialog1() {
    this.display1 = true;
  }
  display2: boolean = false;
  showDialog2() {
    this.display2 = true;
  }

来源：https://stackoverflow.com/questions/41289430/angular-2-nested-modal-dialog-with-primeng-doesnt-work