Update a $scope object from run function in AngularJS

Question

I have my notification listener in the run function. When a notification is received I need to update a object present in $scope with a parameter present in notification object.

angular.module('app', ['ionic', 'chatsCtrl'])
.run(function($state, $ionicPlatform) {
  window.FirebasePlugin.onNotificationOpen(function(notification) {
    // Need to append this notification.parameter to a scope variable present in a controller  
  }
}
.controller('chatsCtrl', function($scope) {
  // $scope.chats
});

How can I go about doing this? I don't want to use $rootScope object as $scope.chat object will get very heavy.

Thanks

try using $broadcast toddmotto.com/…

Edison Augusthy
– Edison Augusthy

2017-03-30 08:43:29 +00:00
Commented Mar 30, 2017 at 8:43 — Edison Augusthy
– Edison Augusthy, Commented Mar 30, 2017 at 8:43

Sachila Ranawaka · Accepted Answer · 2017-03-30 07:47:14Z

1

you can't call scope variables/functions inside run block. since you don't want to use rootscope my suggestion is to create a service and assign values to a particular method in that service from the run block. Then get that value from the controller using the same service.

angular.module('app', ['ionic', 'chatsCtrl'])
.run(function($state, $ionicPlatform) {
  window.FirebasePlugin.onNotificationOpen(function(notification) {
     sampleService.setData(notification)
  }
}
.controller('chatsCtrl', function($scope,sampleService) {
   $scope.chats =  sampleService.getData()
});
.factory('sampleService', function() {
   var data;
   return {
     getData : function(){ return data},
     setData: function(param){ data = param},
   }
});

answered Mar 30, 2017 at 7:47

Sachila Ranawaka

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4 Comments

Edison Augusthy Over a year ago

here $broadcast may be a better way

Sachila Ranawaka Over a year ago

yeah but try to avoid listeners like broadcast as much as possible. it will reduce the performance and increase the complexity

Pradeep Rajashekar Over a year ago

@sachilaranawaka I implemented what you suggested. But the data was not persisting. So I had to store it in localStorage till I retrieved it in the controller. Or does the factory persist data?

Sachila Ranawaka Over a year ago

@Pradeep Rajashekar if you are not overriding the get method again data should be persistent

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