sannonaragao

It's a component to validate required fields, minimun length, patterns and custom validations.

Example 1 :  Validate: required, minlength and a pattern.
some.component.html
        <input pInputText type="text" name="email"  [(ngModel)]="user.email"
              ngModel #email="ngModel" required minlength="5"
              pattern="^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$">

        <app-input-validation [control]="email"

sannonaragao

PrimeNG has 2 different components to display messages: 

  The Messages component: https://www.primefaces.org/primeng/#/messages
  The Growl component: https://www.primefaces.org/primeng/#/growl
  
notifications.component.ts - is the notification component with both growl and services from PrimeNg:
    <p-growl [value]="growl"></p-growl>
    <p-messages [value]="message"></p-messages>

notifications.service.ts - is the service to be used to send messages do Growl and Messages.