Issues encountered while implementing a wrapper service for PrimeNG's MessageService in Angular 8

I have developed a custom wrapper service for the MessageService provided by PrimeNG, rather than directly calling the add() method within the application. However, I am facing an issue where the code is not functioning as expected and no compile-time or runtime errors are being thrown. I have verified that the code is executing properly through debugging. Interestingly, when I directly use the MessageService, it works fine.

Could it be possible that the MessageService needs to be injected into the component in order to interact with the HTML tag placed in app.component.html?

Feel free to take a look at the code snippet of the wrapper service below:

import { Injectable } from '@angular/core';
import { MessageService } from 'primeng/api';

@Injectable({
  providedIn: 'root'
})
export class ToastService {

  constructor(public messageService: MessageService) { }

  success(message: string) {
    this.messageService.add({ severity: 'success', detail: message });
  }

  error(message: string) {
    this.messageService.add({ severity: 'error', detail: message });
  }
}

Cheers!

Answer №1

Have you experimented with using NgZone?

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

constructor(private ngZone: NgZone)
this.ngZone.run(() => {
      showMessage(message: string) {
       this.notificationService.displaySuccess(message);
    }
});

Answer №2

Are you including the

<p-toast position="top-right"></p-toast>
in your component template? Or is it located at the root-level of the app.component.html file? Alternatively, you could use
<p-messages [(value)]="msgs"></p-messages>
where 'msgs' is defined in the component as msgs: Message[] = [];. It appears that your wrapper is correctly set up and you just need to add it to your template.

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