Javascript Firebase快照列表未定义

我对Firebase Api和列表快照列表的

ref.on（）

方法有一个问题。看：

客房工厂：

.factory('Rooms', function ($firebaseObject, ObjectFactory) {
    var ref = new Firebase(firebaseUrl + '/rooms');

    var onComplete = function (error) {
        if (error) {
            console.log('Data could not be saved: ', error);
        }
        else {
            console.log('Data saved successfully!');
        }
    };

    return {
        all: function () {
            ref.on("value", function(snapshot) {
                return snapshot.val();
            }, function (errorObject) {
                console.log("The read failed: " + errorObject.code);
            });
        },

.controller('RoomsCtrl', function ($scope, Rooms, $state) {
        var rooms = Rooms.all();

        console.log('All Rooms:', rooms);
        console.log('Rooms length:', rooms);

All Rooms: undefined
Rooms length: undefined

控制器：

.factory('Rooms', function ($firebaseObject, ObjectFactory) {
    var ref = new Firebase(firebaseUrl + '/rooms');

    var onComplete = function (error) {
        if (error) {
            console.log('Data could not be saved: ', error);
        }
        else {
            console.log('Data saved successfully!');
        }
    };

    return {
        all: function () {
            ref.on("value", function(snapshot) {
                return snapshot.val();
            }, function (errorObject) {
                console.log("The read failed: " + errorObject.code);
            });
        },

.controller('RoomsCtrl', function ($scope, Rooms, $state) {
        var rooms = Rooms.all();

        console.log('All Rooms:', rooms);
        console.log('Rooms length:', rooms);

All Rooms: undefined
Rooms length: undefined

输出：

.factory('Rooms', function ($firebaseObject, ObjectFactory) {
    var ref = new Firebase(firebaseUrl + '/rooms');

    var onComplete = function (error) {
        if (error) {
            console.log('Data could not be saved: ', error);
        }
        else {
            console.log('Data saved successfully!');
        }
    };

    return {
        all: function () {
            ref.on("value", function(snapshot) {
                return snapshot.val();
            }, function (errorObject) {
                console.log("The read failed: " + errorObject.code);
            });
        },

.controller('RoomsCtrl', function ($scope, Rooms, $state) {
        var rooms = Rooms.all();

        console.log('All Rooms:', rooms);
        console.log('Rooms length:', rooms);

All Rooms: undefined
Rooms length: undefined

或：

在我的

房间中添加了
$scope
，并且：

all: function () {
            $scope.result = {};

            ref.on("value", function(snapshot) {
                $scope.result = snapshot.val();
            }, function (errorObject) {
                console.log("The read failed: " + errorObject.code);
            });

            return $scope.result;
        },

但问题是continuos
未定义
，出现了新问题：

错误：[$injector:unpr]未知提供程序：$scopeProvider您的代码有很多问题。首先，Rooms.all（）实际上不返回任何内容。其次，Firebase调用是异步的，所以您需要使用AngularFire、$q，或者将函数包装为$Timeout

下面是一个使用$firebaseArray的示例

.factory('Rooms', function ($firebaseArray) {
    var ref = new Firebase(firebaseUrl + '/rooms');

    return {
        all: function () {
            return $firebaseArray(ref);
        },
     }
 })


.controller('RoomsCtrl', function ($scope, Rooms, $state) {
     var $scope.rooms = Rooms.all();
 });

通过将
rooms
绑定到范围，您可以在视图中看到输出。但是，如果您真的想使用
console.log
，则需要在下载数据后使用来记录。
问题是我需要将factory与controller一起使用，而firebase数据没有为我过滤。$loaded时也没有。使用工厂和snapshot.val（）的输出：所有房间：匿名（snapshot）