首先更新为angularFire 0.6。看上去是0.3。* ish。angularFire已更改为$firebase并具有更强大，更简化的界面。
我将首先以困难的方式进行操作，因为我认为理解此处的基本原理非常有价值。这相当复杂，我只介绍基本要点。也有很多微小的情况需要处理：
angular.module(’app’, []) .controller(’UsersController’, function($scope, $firebase, $timeout, $routeParams){ var userId = $routeParams.userId; $scope.user = $firebase(new Firebase(’URL/user/’+userId)); // or, for 3-way binding and automatic writes back to Firebase var userRef = $firebase(new Firebase(’URL/users/’+userId)).$bind($scope. ’user’); // grab this users’ books using Firebase (the hard way) $scope.books = {}; var booksRef = new Firebase(’URL/books/’); // fetch the user’s book list dynamically because it may change in real-time var indexRef = new Firebase(’URL/user/’+userId+’/books’); // watch the index for add events indexRef.on(’child_added’, function(indexSnap) { // fetch the book and put it into our list var bookId = indexSnap.name(); booksRef.child(bookId).on(’value’, function(bookSnap) { // trigger $digest/$apply so Angular syncs the DOM $timeout(function() { if( snap.val() === null ) { // the book was deleted delete $scope.books[bookId]; } else { $scope.books[bookId] = snap.val(); } }); }); }); // watch the index for remove events indexRef.on(’child_removed’, function(snap) { // trigger $digest/$apply so Angular updates the DOM $timeout(function(snap) { delete $scope.books[snap.name()]; }); });});
然后是HTML（以下其他示例相同）：
<div data-ng-repeat='(bookId, book) in books'> {{bookId}}: {{book.title}}</div>
这里没有完全涵盖的一些边缘案例：
数据未按优先级排序从索引中删除记录时，应在数据路径上调用off（）索引顺序的更改不会更改数据记录的顺序索引的值未存储在任何地方以供参考（如果有关系）FirebaseIndex是一个简单的实用程序，它接受像书本清单这样的索引，并以更复杂的方式管理我们刚刚在上面创建的代码。
不幸的是，FirebaseIndex不支持value事件，因此由于angularFire的内部加载机制发生了变化，因此不能在0.5.0之后与angularFire一起使用。因此，它不像以前那么短而甜美。
angular.module(’app’, []).controller(’UsersController’, function($scope, $firebase, $timeout){ var userId = $routeParams.userId; $scope.user = $firebase(new Firebase(’URL/user/’+userId)); var fb = new Firebase(URL); var index = new FirebaseIndex( fb.child(’user/’+userId+’/books’) ); $scope.books = {}; // almost magic index.on(’child_added’, function(snap) { $timeout(function() { $scope.books[snap.name()] = snap.val(); }); }); index.on(’child_removed’, function(snap) { $timeout(function() { delete $scope.books[snap.name()]; }); });});
Firebase-util是功能更强大，更复杂的库，用于规范化路径。由于它返回的对象的工作方式与常规Firebase引用相同，因此也可以与angularFire0.5及更高版本无缝使用。
angular.module(’app’, []).controller(’UsersController’, function($scope, $firebase){ var userId = $routeParams.userId; $scope.user = $firebase(new Firebase(’URL/user/’+userId)); var fb = new Firebase(URL); var ref = new Firebase.util.intersection( fb.child(’user/’+userId+’/books’), fb.child(’books’) ); // magic! $scope.books = $firebase(ref);});解决方法
我想我已经接近了，我能够打印出属于用户的书的ID，但一直尝试从Firebase图书参考中获取属于用户的书的列表失败。
我在这里大致遵循该教程：http ://www.thinkster.io/pick/eHPCs7s87O/angularjs-tutorial-learn-to-rapidly-build-real-time-web-apps-with-firebase#item-526e9330d90f99661f00046c
并在此处阅读有关数据非规范化的文档：https : //www.firebase.com/blog/2013-04-12-denormalizing-is-normal.html
如果要在页面中显示用户，然后在所有书中显示该用户，该怎么办？
火基结构FB|--user| || --user1| || --name: 'test name'| --email: 'test@test.com'| --books| || '-JFZG3coHOAblHZ7XSjK': true| '-KJKJASDIUOPIWE9WEeJ': true| '-YtUTRGJLNL876F3SSwS': true|--books | --'-JFZG3coHOAblHZ7XSjK' | | | --title: 'book title 1' | --ownerId: 'user1' | --'-KJKJASDIUOPIWE9WEeJ' | | | --title: 'book title 2' | --ownerId: 'user1' | --'-YtUTRGJLNL876F3SSwS' | | | --title: 'book title 2' | --ownerId: 'user1'视图
<div data-ng-controller='UsersController' data-ng-init='findOneUser()'> <h2>Profile</h2> <img data-ng-src='https://www.6hehe.com/wenda/{{user.photoUrl}}'> <p>Name: {{ user.name }}</p> <p>Name: {{ user.email }}</p> <a data-ng-href='https://www.6hehe.com/wenda/21108.html#/users/{{ userId }}/edit'>Edit</a> <h2>Coffee Blends</h2> <div data-ng-repeat='book in user.books'> <p>---</p> <p>{{user.books}}</p> </div> <!--<div data-ng-controller='BooksController' data-init=''>--> <!--</div>--></div>控制者
’use strict’;angular.module(’ccApp.controllers.users’,[’ccApp.services.users’]) .controller(’UsersController’,[’$scope’,’$routeParams’,’$location’,’angularFire’,’Users’,function($scope,$routeParams,$location,angularFire,Users){ $scope.user = {}; $scope.userId = $routeParams.userId; $scope.findOneUser = function(userId){if (!!$scope.userId){ angularFire(Users.find($routeParams.userId),$scope,’user’);} }; $scope.updatePhotoUrl = function(url,user){$scope.fileUrl = url;console.log($scope.fileUrl[0].url);user.photoUrl = $scope.fileUrl[0].url; }; $scope.findUsers = function(){$scope.users = Users.collection(); }; $scope.findWholesalers = function(){$scope.wholesalers = Users.collection(); }; }]);服务
’use strict’;angular.module(’ccApp.services.users’,[’ccApp.services.firebaseRefs’]) .factory(’Users’,[’angularFireCollection’,’FireRef’,function(angularFireCollection,FireRef){ return{collection: function(cb){ return angularFireCollection(FireRef.users(),cb);},find: function(userId){ return FireRef.users().child(’/’+userId);} }; }]);
