AngularJS $http use response in multiple controllers

Question

I have an app where I am loading a bunch of albums in one partial and then when a user clicks on each individual album, they get details for the album like songs, etc. Right now I am pulling the data from database but doing it twice, once in ProjectsCtrl to show all the albums and then again in ProjectsDetailCtrl for the individual album info. I feel like there is a faster way to do this, but can't figure out how to save the data from the first time to use again in the 2nd controller

(function() {
    var app = angular.module('chp', ['ngRoute', 'projectControllers']);

    app.config(['$routeProvider',
      function($routeProvider) {
        $routeProvider.
          when('/', {
            templateUrl: 'partials/directory.html',
            controller: 'ProjectsCtrl'
          }).
          when('/album/:slug', {
            templateUrl: 'partials/album.html',
            controller: 'ProjectDetailCtrl'
          }).
          otherwise({
            redirectTo: '/'
          });
      }]);

    var projectControllers = angular.module('projectControllers', []);

    projectControllers.controller('ProjectsCtrl', ['$scope', '$http',
      function ($scope, $http) {
        $http.get('/get_albums').success(function(albums) {
            $scope.projects = albums;
            $scope.filters = { };
        });
      }]);



    projectControllers.controller('ProjectDetailCtrl', ['$scope', '$http', '$routeParams', '$sce',
      function($scope, $http, $routeParams, $sce) {


        $http.get('/get_albums').success(function(albums) {
            $scope.projects = albums;

            for(var i = 0; i < $scope.projects.length; i++) {
                if($scope.projects[i].slug === $routeParams.slug){
                    $scope.album = $scope.projects[i];
                    $scope.albumIdx = i;
                    break;
                }
            }    

            $scope.project = albums[$scope.albumIdx];

            $scope.showVideo = function(id) {
                var videoCode = $(this)[0].song.video;
                // videoCode = '<iframe width="560" height="315" src="'+video+'" frameborder="0" allowfullscreen></iframe>';
                $('#myModal .flex-video').html(videoCode);
                $('#myModal .track-number').html('<span style="color: #f86081; display: inline-block; margin-right: 4px;">' + ($(this)[0].$index+1) + '.</span> ' + $(this)[0].song.title);
                $('#myModal').foundation('reveal', 'open');
            }

        });

    }]);
})();

Answer 1

If $http.get('/get_albums') produces all of the data that you need for both controllers, then it sounds like you just need to use caching:

$http.get('/get_albums', { cache: true })....

Use that in both controllers and you'll only be hitting the server once.

Preferably, this would be placed in a factory so that the data retrieval logic is only in one place, but that's not an absolute requirement.