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Update service value from parent controller

I was looking for a clock on how to update a service value from a nested controller.
My child controller must update the value in the service. And this value should be displayed in the parent controller.

I made jsfiddle to make it more understandable and easy to use http://jsfiddle.net/jtsmduxw/3/

<body ng-app="MyApp">
    <div ng-controller="parentCtrl">
        <p>{{username}}</p>
        <div ng-controller="childCtrl">
            <p>{{username}}</p>
        </div>
    </div>
</body>

-

var app = angular.module("MyApp", []);

app.service('authenticationSrv', function () {
    var user = 'anonymous';
    return {
        getUser: function () {
            return user;
        },
        setUser: function (value) {
            user = value;
        }
    };
});

app.controller("parentCtrl", function ($scope, authenticationSrv) {
    $scope.username = authenticationSrv.getUser();
});

app.controller("childCtrl", function ($scope, authenticationSrv) {
    authenticationSrv.setUser('my name'); // I need this function to also update the scope of the parent
    $scope.username = authenticationSrv.getUser();
});

(I read and tried updating the parent region variable , but I could not get it to work with this service.)

Thanks!

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4 answers

user (). {{user.name}} .

, authenticationSrv.setUser() authenticationSrv.setUserName().

. : https://jsfiddle.net/rbwk3rqb/

var app = angular.module("MyApp", []);

angular.module("MyApp")
.service('authenticationSrv', function () {
    var user = {name: 'anonymous'};
    return {
        getUser: function () {
            return user;
        },
        setUserName: function (value) {
            user.name = value;
        }
    };
});

angular.module("MyApp")
.controller("parentCtrl", function ($scope, authenticationSrv) {
    $scope.user = authenticationSrv.getUser();
});

angular.module("MyApp")
.controller("childCtrl", function ($scope, authenticationSrv) {
    authenticationSrv.setUserName('my name');
    $scope.user = authenticationSrv.getUser();
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<body ng-app="MyApp">
    <div ng-controller="parentCtrl">
        <p>{{user.name}}</p>
        <div ng-controller="childCtrl">
            <p>{{user.name}}</p>
        </div>
    </div>
</body>
Hide result
+1

username.

app.controller("parentCtrl", function ($scope, authenticationSrv) {
    $scope.parentObject = {};
    $scope.parentObject.username = authenticationSrv.getUser();
});


app.controller("childCtrl", function ($scope, authenticationSrv) {
    authenticationSrv.setUser('my name'); 
    $scope.parentObject.username = authenticationSrv.getUser();
});


var app = angular.module("MyApp", []);


app.service('authenticationSrv', function () {
    var user = 'anonymous';
    return {
        getUser: function () {
            return user;
        },
        setUser: function (value) {
            user = value;
        }
    };
});

app.controller("parentCtrl", function ($scope, authenticationSrv) {
    $scope.parentObject = {};
    $scope.parentObject.username = authenticationSrv.getUser();
});

app.controller("childCtrl", function ($scope, authenticationSrv) {
    authenticationSrv.setUser('my name'); 
    $scope.parentObject.username = authenticationSrv.getUser();
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<body ng-app="MyApp">
    <div ng-controller="parentCtrl">
        <p>{{parentObject.username}}</p>
        <div ng-controller="childCtrl">
            <p>{{parentObject.username}}</p>
        </div>
    </div>
</body>
Hide result
+2

user , :

$scope.username = authenticationSrv.getUser();

user $scope.username. , user , "" $ .

: - , , . ( javascript , , .) , - , ? , .

( ) ( ).

+1
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The idea is to create an update object and not just a primitive:

$scope.user = {};
$scope.user.name = authenticateSrv.getUser();

and in the area of ​​child objects you just set it:

$scope.user.name = authenticateSrv.setUser('my name');

here is fiddle

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