Show a div by wrap with another controller doesn't work - html

Question

I have a button in a div with a controller named controllerBubble. I would like this button show a div controlled by an other controller : controllerDependance. Is it possible to wrap the button in a div and the hidden div with same controller but it doesn't works.
This is my HTML :
<div ng-app="app">
<div ng-controller="mainController" ng-show="myvalue" class="ng-cloak">
<div id="panelSap" ng-controller="controllerDependance">
My hidden div
</div>
</div>
<div id="containerDetailsTicket" class="clearfix" ng-controller="controllerBubble">
Div which contains the button
<div id="containerButton" ng-controller="mainController">
<button ng-click="showAlert()">Afficher</button>
</div>
</div>
</div>
This is my controllers :
var d3DemoApp = angular.module('app', [])
d3DemoApp.controller('controllerBubble', function() {
});
d3DemoApp.controller('controllerDependance', function($scope) {
$scope.myvalue = false;
$scope.showAlert = function() {
$scope.myvalue = true;
};
});
d3DemoApp.controller('mainController', function AppCtrl($rootScope, $scope) {
$scope.myvalue = false;
$scope.showAlert = function() {
$scope.myvalue = true;
};
});
I created a Plunker
Any idea what's happening ? Someone can do work on the Plunker. I Hope someone can help me.
Thanks a lot.

Answer 1

Look, not sure why you want to have such a nesting of controllers but I am pretty much sure that it ain't good. I'll tell you why. In your code, you are trying to use same controller at two DOM ele. So, they are having 2 different scope $scope and so they are not working.
I have made a working plunker for you by using $rootScopebut its not a clean approach as you'll be having a global variable ($rootScope.myvalue) declared. Declaring global variable should always be avoided unless forced to.
Another suggested approach in plunker is to use $emit as event notifier. The $on would take appropriate action when the event is triggered. You can even pass values that too to different controllers.
Service can also be used to pass values among controllers .
Let me know if you need more info
Update 1:
If you want to remove some div (not hide) then you should try to use ng-if.