Angularfire forEach键返回undefined

Question

我有一些数据

{
    "projects" : [
        {
            "projectName" : "Test Project 1",
            "dueDate" : "20/05/2014",
            "owner" : "Test owners 1",
            "categories" : [
                "JavaScript",
                "HTML",
                "CSS"
            ],
            "open" : true,
            "tasks" : [
                {
                    "taskName" : "Test task 1",
                    "targetDate" : "02/04/2014",
                    "categories" : [
                        "JavaScript",
                        "HTML",
                        "CSS"
                    ],
                    "open" : true
                },
                {
                    "taskName" : "Test task 2",
                    "targetDate" : "10/04/2014",
                    "categories" : [
                        "JavaScript",
                        "HTML"
                    ],
                    "open" : true
                }
            ]
        },
        {
            "projectName" : "Test Project 2",
            "dueDate" : "12/07/2014",
            "owner" : "Test owners 2",
            "categories" : [
                "JavaScript",
                "HTML",
                "CSS"
            ],
            "open" : true,
            "tasks" : [
                {
                    "taskName" : "Test task 1",
                    "targetDate" : "13/05/2014",
                    "categories" : [
                        "HTML",
                        "CSS"
                    ],
                    "open" : true
                },
                {
                    "taskName" : "Test task 2",
                    "targetDate" : "03/06/2014",
                    "categories" : [
                        "JavaScript"
                    ],
                    "open" : true
                }
            ]
        }
    ]
}

然后我有一个简单的控制器，试图输出每个数组索引中包含的对象

TM.factories.getData = function(){
    var getProjects = new Firebase("https://<my-firebase>.firebaseio.com/projects");
    return getProjects;
};

TM.controllers = {};

TM.controllers.overviewCtrl = function($scope,$firebase){
    var taskArr = [];
    $scope.projectList =  $firebase(TM.factories.getData());
    $scope.projectList.$on("loaded", function() {
        $scope.projectList.$getIndex().forEach(function(key,i) {
            console.log($scope.projectList[key]);
        });
    });
};

不要担心它是如何布局的我正在尝试以不同的方式编写它并且它是非常早期的开发工作。

问题是为什么我在使用“key”或“i”时未定义 ？ 如果我控制日志只是“密钥”或“我”我得到0,1。

Answer 1

你能试一试吗：

TM.controllers.overviewCtrl = function($scope,$firebase){
    var taskArr = [];
    $scope.projectList =  $firebase(TM.factories.getData());
    $scope.projectList.$on("loaded", function(projectList) {
        projectList.$getIndex().forEach(function(value,key) {
            console.log(projectList[key]);
        });
    });
};