当遍历AngularFire中的项目列表时，如何获得每个项的ID ?(复制)

This question already has an answer here:

这个问题已经有了答案:

• How do I get the UID of the new list item I just added to Firebase using AngularJS? 1 answer
• 我如何使用AngularJS添加到Firebase的新列表项的UID ?1回答

Controller:

控制器:

...

$scope.items = ItemService; // This is injected correctly, no problem here.

...

HTML:

HTML:

<div ng-repeat="item in items">
  <a ng-href="#/items/{{ item.id }}">{{ item.name }}</a>
</div>

My issue is... if I add items using .$add() (Firebase's .push()), I don't know how to get the auto-generated ID...

我的问题是…如果我添加了使用的项。$add() (Firebase的。push())，我不知道如何获得自动生成的ID…

Any ideas?

什么好主意吗?

3 个解决方案

#1

Turns out you can iterate over (key, value), which does the trick:

结果是，你可以迭代(key, value)，这是一个技巧:

HTML:

HTML:

<div ng-repeat="(id, item) in items">
  <a ng-href="#/items/{{ id }}">{{ item.name }}</a>
</div>

#2

In addition to iterating over key/value, each record in $firebase (assuming it's not a primitive value) will have the key attached as $id:

除了迭代键/值之外，每个$firebase的记录(假设它不是一个原始值)将有一个作为$id的键:

<div ng-repeat="item in items">
  <a ng-href="#/items/{{ item.$id }}">{{ item.name }}</a>
</div>

#3

This question is answered here: https://*.com/a/21996544/975669

这个问题的答案是:https://*.com/a/21996544/975669。

the answer:

答案是:

The angularFire $add method returns a promise, which when resolved will contain a Firebase reference to your newly pushed value. With that value, you can get the UID.

angularFire $add方法返回一个承诺，当解析将包含一个Firebase引用到您的新推送的值。有了这个值，就可以得到UID。

$scope.tests.$add({
  ...your object....
}).then(function(ref) { 

    //this is your id
    var id = ref.name(); 
  });