Angularjs model not update view when modified by child controller - angularjs

Question

I have to update a parameter of the parent controller from a nested controller.
I'm able to read the parameter, but when I change it it does not update into the view (webpage)... help plz :)
This is my js:
app.controller('signalCtrl', [ '$scope', 'DB', function($scope, service) {
this.address = null;
}]);
app.controller('reportMap', ['$scope', function($scope) {
this.updateParent = function() {
$scope.$parent.tab.address = 'something';
}
}]);
And this is my HTML:
<div ng-controller="signalCtrl as signal">
<input type="text" ng-model="signal.address">
[...]
<div ng-controller="reportMap as map">
[...]
</div>
</div>

Answer 1

The address property in parent controller is not bound to $scope, but to this object, so you even can't reach that property that way. I suggest you to move your updating function to parent controller:
app.controller('signalCtrl', [ '$scope', 'DB', function($scope, service) {
var self = this;
self.address = null;
self.update = function(newValue) {
self.address = newValue;
}
}]);
app.controller('reportMap', ['$scope', function($scope) {
var self = this;
self.someValue = 'something';
}]);
HTML:
<div ng-controller="signalCtrl as signal">
<input type="text" ng-model="signal.address">
[...]
<div ng-controller="reportMap as map">
<button type="button" ng-click="signal.update(map.someValue)">Click!</button>
[...]
</div>
</div>
You don't call updating function in the presented code, so I added a button to show how to use it.

Answer 2

use signal instead of tab
app.controller('reportMap', ['$scope', function($scope) {
this.updateParent = function() {
$scope.$parent.signal.address = 'something';
}
}]);
see this link : https://plnkr.co/edit/RhQLfBy2heecJDuCcq9s?p=preview

Answer 3

Ok, probably the error is into te HTML:
(function () {
var app = angular.module('segnalazioni', ['filters', 'smart-table', 'smart-table-server']);
app.controller('nuovaSegnalazioneCtrl', [ '$scope', 'DB', function($scope, service) {
var self = this;
this.activatedTab = "tab_animale";
this.chipNumber = null;
this.indirizzo = 'ind';
this.setIndirizzo = function() {
self.indirizzo = "VIA ROMA";
console.log("AGGIORNAMENTO INDIRIZZO");
}
I call setIndirizzo from the child (i don't pass a value I know, but it is not the problem): into the console i read "AGGIORNAMENTO INDIRIZZO", but the value into the VIEW does not change...
this is a link to the complete html file.
https://www.dropbox.com/s/gzlm997ub8fot7r/html.txt?dl=0