angularfire

问题 This question is similar to AngularFire - How do I query denormalised data? but I really do want an answer that uses AngularFire (current version is 0.82). This is an example of the data structure I use: { "users": { "user1": { "name": "Alice", "lists": { "list1": "true" } }, "user2": { "name": "Bob", "lists": { "list2": "true" } } }, "lists": { "list1": { "title": "Example" }, "list2": { "title": "Example2" } } } or, in a different notation: to get all of one user's lists we need all of

问题 I'm working in a project where I have these entities: region, messages and a link between region and messages. In this link I also can configure some extra properties such as if the message can be show more than once for a region and if there is a pre-requisite message to be show before. My basic database concept: Below is how I'm making my database: I would like to be able to show a list with the message name, the show flag and the name of the pre-requisite message, if filled. I'm using the

问题 Hi I am using angularfire for my app I am listing my service and controller here. I am planning to get the count of comments which has been added to a particular post. this is my controller app.controller('PostViewCtrl', function ($scope, FIREBASE_URL,$routeParams, Post, Auth, $timeout,$interval,$http, $rootScope, $firebase) { var ref = new Firebase(FIREBASE_URL); $scope.post = Post.get($routeParams.postId); $scope.comments = Post.comments($routeParams.postId); $scope.user = Auth.user; $scope

问题 In the docs I see a lot of examples using index values as a part of the key name for a particular item --- but I don't understand how this is a consistent way to model your data. For example let's say I have a list of articles: https://gigablox.firebaseio.com/articles/ article1 article2 article3 When I'm ready to add article4 I know I can use: var length = Object.keys($scope.articles).length; And using AngularFire 0.5.0 I can save it with: var name = 'article' + length + 1; $scope.articles

问题 I have next database list (usernames + user id). How can i find object by user id and change his key (username)? I'm using AngularFire2 with Angular 5. 回答1: You can find a child node by its value with a query like this: var users = firebase.database().reference("usernames"); var query = users.orderByValue().equalTo("Sk6I..."ltA2"); By attaching a listener to this query you'll be able to find the reference and the key of the user (or "any users", since technically there may be more keys with

问题 I am doing a test app using the plugin cordova-plugin-firebase to do Push Notifications, following this tutorial: https://angularfirebase.com/lessons/ionic-native-with-firebase-fcm-push-notifications-ios-android/ . The problem appears when I try to compile the project with android with the following command: ionic cordova run android giving me a build failed where the error is the follows: Could not find support-v4.aar (com.android.support:support-v4:26.1.0) . Do you guys have some idea about

问题 This is a followup question from here: How to create 3 way data binding between angularFire 0.5.0 and latest ng-grid? where Kato nicely provided a solution: var app = angular.module('app', ['firebase', 'ngGrid']); var fb = new Firebase('https://nggrid-example.firebaseio-demo.com/'); app.controller('ctrl', function($firebase, $scope, orderByPriorityFilter) { $scope.data = $firebase(fb); $scope.myData = $firebase(fb); $scope.$watchCollection('data', function() { $scope.myData =

问题 Simple console timing shows that fb loads much slower than desired (just 50 chat items). load: 171.226ms fbload: 1723.570ms load: 182.672ms fbload: 2143.836ms The normal load is from my mongodb and fbload is firebase. Despite my mongo being not denormalized fb is order of magnitude slower. Is there something I can do to increase performance? I'm using angularfire and I can load the initial from my own database and then replace it with the fb data. For this solution is there some way I can get

问题 Can you help me? I can't get the user's profile information in Angularfire Authentication like their facebook's profile picture or facebook name. Please help. Thanks a lot! I've tried this code but its not working. I use Angular 2 TypeScript. var user = firebase.auth().currentUser; var name, email, photoUrl, uid; if (user != null) { name = user.displayName; email = user.email; photoUrl = user.photoURL; uid = user.uid; // The user's ID, unique to the Firebase project. Do NOT use // this value

问题 Let's say I have a collection of articles I am trying to paginate through. I'm using the $on("change") event to listen for changes to index and limit .controller('articlesCtrl', ["$scope", "$firebase", "$stateParams", function($scope, $firebase, $stateParams) { var limit = 2; var index = $stateParams.id; var articlesRef = new Firebase("https://example.firebaseio.com/articles").startAt(null, index).limit(limit); var obj = $firebase(articlesRef); obj.$on("change", function() { var keys = obj.