This is my factory:
.factory('userService',()){
var user = {};
return {
getFirstname : function () {
return user.firstname;
},
setFirstname : function (firstname) {
user.firstname = firstname;
}
}
And I'm using this service in my two controllers MainCtrl and AccountEditCtrl I'm using my getFirstname() in my MainCtrl and setFirstname in AccountEditCtrl
.controller('MainCtrl',['userService', function(userService){
$scope.userName = userService.getFirstName();
}]);
.controller('AccountEditCtrl',['userService', function(userService){
userService.setFirstname("New First Name");
}]);
My problem is that when I use the userService.setFirstname() the $scope.userName don't change in MainCtrl.
In some case $watch is not working with factory object. Than you may use events for updates.
app.factory('userService',['$rootScope',function($rootScope){
var user = {};
return {
getFirstname : function () {
return user.firstname;
},
setFirstname : function (firstname) {
user.firstname = firstname;
$rootScope.$broadcast("updates");
}
}
}]);
app.controller('MainCtrl',['userService','$scope','$rootScope', function(userService,$scope,$rootScope) {
userService.setFirstname("bharat");
$scope.name = userService.getFirstname();
$rootScope.$on("updates",function(){
$scope.name = userService.getFirstname();
});
}]);
app.controller('one',['userService','$scope', function(userService,$scope) {
$scope.updateName=function(){
userService.setFirstname($scope.firstname);
}
}]);
When using same object across controllers ,you have to define your service using the .service method like below:
.service('userService',function(){
this.user = {};
this.getFirstname = function () {
return this.user.firstname;
};
this.setFirstname = function (firstname) {
this.user.firstname = firstname;
};
});
Use $timeout for broadcast event. it will help you.
app.factory('userService',['$rootScope', "$timeout", function($rootScope, $timeout){
var user = {};
return {
getFirstname : function () {
return user.firstname;
},
setFirstname : function (firstname) {
user.firstname = firstname;
$timeout(function(){
$rootScope.$broadcast("updates");
}, 1000)
}
}
}]);
app.controller('MainCtrl',['userService','$scope','$rootScope', function(userService,$scope,$rootScope) {
userService.setFirstname("bharat");
$scope.name = userService.getFirstname();
$rootScope.$on("updates",function(){
$scope.name = userService.getFirstname();
});
}]);
app.controller('one',['userService','$scope', function(userService,$scope) {
$scope.updateName=function(){
userService.setFirstname($scope.firstname);
}
}]);
You have two options to overcome this problem.
Solution 1st :
Adding a watch in your controller.
.controller('MainCtrl',['userService', function(userService) {
$scope.userName = userService.getFirstName();
$scope.$watch(function() {
return userService.getFirstName();
}, function(newValue) {
$scope.username = newValue;
});
}]);
Solution 2nd :
.controller('MainCtrl',['userService', function(userService) {
$scope.getUsername = function() {
userService.getFirstName();
};
}]);
Now your view should directly call this function.
<div class="username">{{getUsername()}}</div>
Now, according to Angular's doc, whenever the return value from a function call changes, Angular will update the values in the view.
sample factory with getter and setter example code
<div ng-app="myApp">
<div ng-controller="FirstCtrl">
<br>Input is : <strong>{{data.firstName}}</strong>
<button ng-click="setData()">setData</button>
</div>
<hr>
<div ng-controller="SecondCtrl">
Input should also be here: {{data.firstName}}
<button ng-click="getData()">getData</button>
</div>
</div>
var myApp = angular.module('myApp', []);
myApp.factory('Data', function(){
var service = {
FirstName: '',
setFirstName: function(name) {
// this is the trick to sync the data
// so no need for a $watch function
// call this from anywhere when you need to update FirstName
angular.copy(name, service.FirstName);
}
};
return service;
});
// Step 1 Controller
myApp.controller('FirstCtrl', function( $scope, Data ){
$scope.setData = function() {
Data.FirstName='Tridip';
};
});
// Step 2 Controller
myApp.controller('SecondCtrl', function( $scope, Data ){
$scope.FirstName = Data.FirstName;
$scope.getData = function() {
alert('get data '+Data.FirstName)
};
});
you should use $ watch so:
.factory('userService',()){
return {
user:{ 'firstname': 'defaultFirstname'},
getFirstname : function () {
return user.firstname;
},
setFirstname : function (firstname) {
user.firstname = firstname;
}
}
.controller('MainCtrl',['userService', function(userService){
$scope.userName = userService.getFirstname();
$scope.$watch('userService.user.firstname', function (newVal) {
$scope.userName = newVal;
});
}]);
.controller('AccountEditCtrl',['userService', function(userService){
userService.setFirstname("New First Name");
}]);
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