In Angular 2, the process of activating an authentication popup or modal can be achieved by following these

Question

In Angular 2, the process of activating an authentication popup or modal can be achieved by following these

I am currently developing a login feature for my application using Angular 2 version rc-1. I am facing an issue where I need to figure out how to trigger the opening of my modal without the need for a button click.

Upon launching my application, I need to check whether the user is logged in or not (using localStorage). If the user is not logged in, the login modal should automatically appear.

Therefore, the opening and closing of the modal is based on a boolean condition rather than a button click event.

Can anyone guide me on how to open a login modal without requiring a button click?

Appreciate your assistance.

authentication typescript angular modal-dialog

Answer 1

Answer №1

Imagine you have a special component that controls your pop-up modal.

export class ModalController {
  constructor () {}

  public displayModal(): void {
     //code to show the modal
  }
}

Then, there is another component that checks the local storage and includes the ModalController as a child. If the user is logged in, the modal.displayModal() method is called.

export class ParentComponent {
  @ViewChild(ModalController)
  public modalController : ModalController;

  constructor() {}

  public ngAfterViewInit(): void {
    //check if user is logged in
    if(!userIsLoggedIn) {
       this.modalController.displayModal();
    }

  }
}

You can use an ngIf directive on a div element so that the ModalController is only displayed if a certain condition is met.

Answer 2

Imagine you have a special component that controls your pop-up modal.

export class ModalController {
  constructor () {}

  public displayModal(): void {
     //code to show the modal
  }
}

Then, there is another component that checks the local storage and includes the ModalController as a child. If the user is logged in, the modal.displayModal() method is called.

export class ParentComponent {
  @ViewChild(ModalController)
  public modalController : ModalController;

  constructor() {}

  public ngAfterViewInit(): void {
    //check if user is logged in
    if(!userIsLoggedIn) {
       this.modalController.displayModal();
    }

  }
}

You can use an ngIf directive on a div element so that the ModalController is only displayed if a certain condition is met.

In Angular 2, the process of activating an authentication popup or modal can be achieved by following these

Answer №1

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