使用firebase,angularFire获取非规范化数据

现在让它工作了,感谢@Kato在线程上的答案: Firebase数据规范化.我该如何根据这个结构获取一个集合？(在创建这个线程之前尝试过但是没有让它工作,所以做了一些小改动,现在它可以正常工作).

为任何困扰相同情况的人发布解决方案:

$scope.flowers = {};

var flowerRef = new Firebase('https://URL.firebaseio.com/flowers/');
var keyRef = new Firebase('https://URL.firebaseio.com/users/'+checkAuth.auth.uid+'/flowers');

keyRef.on('child_added', function(snap) {
    var flowerId = snap.key();
    flowerRef.child(flowerId).on('value', function(snap) {
        $timeout(function() {
           if( snap.val() === null ) {
              delete $scope.flowers[flowerId];
           }
           else {
              $scope.flowers[flowerId] = snap.val();
           }
        });
    });
});

keyRef.on('child_removed', function(snap) {
    var flowerId = snap.key();
    $timeout(function(snap) {
        delete $scope.flowers[flowerId];
    });
});