AngularJS view is not refreshing

I am facing an issue with updating a view via a controller that fetches data from a service. Despite changing the data in the service, the view does not reflect these updates. I have created a simplified example from my application, which can be found here. I have experimented with various bindings (such as using `$scope.time = TimerService.value`, encapsulating it within a function, utilizing `$watch`) but without any success.

It's important to note that in my original application, the data is represented as an array of objects and it's the attributes of these objects that are modified.

-- script.js --

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

mod.service('TimerService', function() {
  this.value = 0;
  var self = this;
  setInterval(function() {
    self.value += 1;
  }, 2000)
});

mod.controller('TimerCtrl', ['TimerService', '$scope', function(TimerService, $scope) {
  $scope.time = TimerService.value;
  $scope.$watch(function() {
    return TimerService.value;
  }, function(newValue) {
    $scope.time = newValue;  
  }, true);
  $scope.otherValue = '12345';
}]);


angular.element(document).ready(function() {
  alert('start');
  angular.bootstrap(document, ['mymodule']);
});

-- index.html --

<!DOCTYPE html>
<html>

  <head>
    <script src="./angular.js"></script>
    <link rel="stylesheet" href="style.css" />
    <script src="script.js"></script>
  </head>

  <body>
      <div ng-controller="TimerCtrl">
          <h1>- {{ time }}-</h1>
          <h2>{{ otherValue }}</h2>
      </div>
  </body>

</html>

Answer №1

It took some trial and error, but I eventually discovered the solution to the issue at hand. In both my example above and in my actual application, the data was being modified outside of the Angular scope (via a controller button click, HTTP request, etc.), which prevented a digest cycle from being initiated. By switching to using $timeout() in my code, I was able to get it working. However, this didn't completely resolve the problem of external data changes in Angular (it seems like I need to integrate everything else into Angular as well).

Update

I found a way to make modifications outside of Angular by utilizing $rootscope within my service:

$rootscope.$apply(function() {
  // implement variable updates here.
  self.value += 1;
});

This approach effectively reflects changes in the view.

Answer №2

Give this a shot

$scope.currentTime = TimerService.currentTime;
if(!$scope.$$phase) {
    $scope.$digest();
}

Answer №3

Give it a shot

var app = angular.module('myApp', []);
            var value = 0;
            var timer = setInterval('Repeater()', 1000);
            var Repeater = function () {
                value++;
                var scope = angular.element(document.getElementById('myApp')).scope();
                console.log(scope);
                scope.$apply(function () {
                        scope.time = value;
                    });
                };
            app.controller('TimerCtrl', ['$scope', function( $scope) {

          }]);

Check out the original post at

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