Angular calling shared service data update in controller - angularjs

Question

I am trying to write some very primitive angular code with 2 controllers and 1 service.
So when I call shared service from controller 1 and update data, I want to use same in my controller 2 $scope so that controller 2 $scope value can reflect on my DOM.
App.controller('oneCtrl', function($scope, $uibModal, $log, sharedProperties) {
// Call a new DOM element to so that ModalInstanceCtrl will be called
// Once controller 2 finishes, I want to update a $scope variable here
// $scope.projectList = getProjectList();
});
App.controller('ModalInstanceCtrl', function ($scope, $uibModalInstance, sharedProperties) {
// This is a new modal which uses sharedProperties
// Update setProjectList() in service
});
App.service('sharedProperties', function() {
var projectList = new Array();
return {
getProjectList: function() {
return projectList;
},
setProjectList: function(value) {
projectList.push(value);
},
}
});
Once controller 2 calls setProjectList(). I want to auto update $scope value in controller 1 using getProjectList()
Please let me know how I can do that? Also do let me know if any further details needed on same.

Answer 1

A service in angular is a singleton so if you change data on the service it will be reflected whenever you call that service.
var app = angular.module('plunker', []);
app.controller('FirstCtrl', function($scope, userData) {
$scope.favoriteBook = userData.favoriteBook;
$scope.getFavoriteBook = function(){
$scope.favoriteBook = userData.favoriteBook;
}
});
app.controller('SecondCtrl', function($scope, userData) {
$scope.changeBook = function(){
userData.favoriteBook = 'The Hobbyt';
}
});
app.factory('userData', function(){
var favoriteBook = 'Harry Potter';
return{
favoriteBook : favoriteBook
}
})
Here you got a service that exposes an object, you can change the value of that object in the second controller and see it reflected in the first controller. Call changeBook(), and then getFavoriteBook()
This is the plunker:
the plunker