What are the benefits of using nested views in Angular?

Currently, I am facing a challenge in using multiple controllers on one page for a website I am developing with Bootstrap and Angular. The layout consists of a top navbar (served as index html from Flask), and a content div containing ng-view where controllers are loaded via Angular $routeProvider. Within the navbar, there is a user icon and a "logout" button that need to update once a controller calls an API to log the user in. How can I achieve this without relying on redirects from the backend? It seems like rendering the navbar with another Angular controller might be a solution, but how do I establish communication between these components? Is there a mediator API available for this purpose? I came across a method involving ng-switch and ng-include which appears overly complex, and I prefer using Jinja2 inheritance in such scenarios. Can anyone guide me to a suitable manual outlining the process of building this setup using multiple views and routing?

javascriptangularjstwitter-bootstrap-3

Answer №1

If you want to have a shared service across all your controllers, you can create a singleton by defining a service.

var module = angular.module('myapp', []);

module.service('loginService', function() {
    return {loggedIn: false}
});

In your controllers, you can access this service like:

app.controller('SomeController', ['$scope', 'loginService', function($scope, loginService) {
  $scope.loginService= loginService;

  $scope.$watch('loginService.loggedIn', function(newValue, oldValue) {
       // Implement logic for handling login/logout
   });
}]);

An alternative approach is to inject the root scope into the login service and emit events when the user logs in or out.

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