How to share data between controllers in Ionic?

I want to know how it would be possible to share date between ionic controllers.

I have a controller where i’m retreiving a json object.

.controller('Ctlr1', function($scope, $http, $stateParams) {
    .success(function (response) {
        $scope.items = response;

And i’m showing the items on a list using ng-repeat like the example below :

     <a class="item"  ui-sref="page2"  ng-repeat="item in items" >
   <h3>{{}} </h3>

I have another view with another controller where I will need the id of the the item clicked !

.controller('Ctlr2', function($scope, $http, $stateParams) {

I was thinking about using $rootScope, I’m able to share one element from a controller to another, but I don’t how to do it depending on the item clicked.

 .controller('Ctrl1', function($rootScope,$scope) {
    $rootScope.resourceId = 4;


.controller('Ctrl2', function($rootScope,$scope) {

You’d typically keep your shared data in a service and have each controller depend on that shared service.

I’d suggest broadcast:

 .controller('Ctrl1', function($rootScope) {
    $rootScope.$broadcast('resourceChange', 4);


.controller('Ctrl2', function($scope) {
    $scope.$on('resourceChange', function (event, val) {

Thanks for your response ! but I want to pass the Id which depends on the item clicked.

Add the ng-click directive into your link

<a class="item"  ui-sref="page2"  ng-repeat="item in items" ng-click="itemSelected(item)" >

And in controller

$scope.itemSelected = function(item) {
     $rootScope.resourceId=item; //or (I don't know what is hidden behind your item object)

Thank you so much @DFull !! it works :smile:

Please I have a question @DFull ! this is working only when I click on one item, if return to the home page and I click on another item it doesn’t, I should reload the page to make it work, so it works only once each page load. so how to resolve this issue ?

Thanks @DFull I founded the solution I had to add cache: false, to may state in app.js

you shouldn’t use $rootscope for this.
go with @encodedmirko suggestion and build a little service which just provides an array where you store your data in.

Give me an example which can work on my present code.

Might need to change POST in the call to GET.

.controller('Ctlr1', function($scope, $http, $stateParams, myAwesomeNewService) {"")
    .success(function (data, status, headers, config) {
       This callback will be called asynchronously when the response is available.
       The callback was a success, get the data and sent it to the view.

      // Push the new values to the template.
      $scope.items = data;
    .error(function (data, status, headers, config) {
      // Called asynchronously if an error occurs or server returns response with an error status.
      console.log("request on failed");

.service('myAwesomeNewService', function ($rootScope, $localStorage, $http, $q) {
  return {
    call: function (url) {
      var deferred = $q.defer();
      var promise = deferred.promise;

        headers: {
          'Content-Type': 'application/x-www-form-urlencoded'
        method: "POST",
        url: url
      }).success(function (data) {
        if (data) {
        else {
          deferred.reject('No data available.');
      }).error(function (data, status, headers, config) {
        deferred.reject(data, status);

      promise.success = function (fn) {
        return promise;
      promise.error = function (fn) {
        promise.then(null, fn);
        return promise;

      return promise;

You can use a service.