如何使用 AngularJS 获取刚刚添加到 Firebase 的新列表项的 UID? [英] How do I get the UID of the new list item I just added to Firebase using AngularJS?

问题描述

我正在向 Firebase 列表添加新子项，并且会自动创建唯一 ID.我需要某种方法来获取创建的 ID，以便我可以立即将 URL 位置路径更改为包含该 ID 的路由.这是我创建列表项的方式:

I am adding new children to a Firebase list and unique IDs are automatically created. I need some way to get the ID thats been created so I can immediately change the URL location path to a route containing that ID. Here is how I am creating the list items:

.controller('NewTestCtrl', ['$scope', 'syncData', '$location', function($scope, syncData, $location) {
  $scope.newTitle = null;
  $scope.tests = syncData('tests');
  $scope.createTest = function() {
     var newDate = new Date();
     if( $scope.newTitle ) {
        $scope.tests.$add({
           title: $scope.newTitle,
           createdDate: newDate,
           modified: newDate,
           user: $scope.auth.user.uid
        });

        $location.path("/test/" + [FIREBASE UNIQUE ID] + "/1");
     }
  };
}])

感谢您的帮助！

推荐答案

angularFire $add 方法返回一个 promise，当它被解析时，它将包含一个 Firebase 对您新推送的值的引用.使用该值，您可以获得 UID.

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.

$scope.tests.$add({
  ...your object....
})
  .then(function(ref) { 
    $location.path("/test/"+ref.name()); 
  });

这篇关于如何使用 AngularJS 获取刚刚添加到 Firebase 的新列表项的 UID?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！