火力地堡3路数据和ControllerAs语法结合

本文介绍了火力地堡3路数据和ControllerAs语法结合的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我特林得到3路数据和火力点和angularfire约束力。你可以看到我在Plunker得：

I'm tring to get 3-way data binding with firebase and angularfire. You can see what I've got in Plunker: http://plnkr.co/edit/RGA4jZK3Y6n4RkPCHK37

app.js

angular.module('ideaBattle', ["firebase"]);

服务

angular
    .module('ideaBattle')
    .constant('FBURL', 'https://ideabattle.firebaseio.com/')
    .service('Ref', ['FBURL', Firebase])
    .factory('dataBank', function(Ref, $firebase) {
        return $firebase(Ref).$asArray();
    });

控制器

angular
    .module('ideaBattle')
    .controller('ideaListCtrl', displayIdeas);

displayIdeas.$inject = ['dataBank'];
function displayIdeas(dataBank){
    var vm = this;
    vm.ideas = dataBank;

    vm.upVote = function(idea){
        vm.ideas[idea.id].votes++;
    };
}

HTML

<div ng-controller="ideaListCtrl as vm">
    <div ng-repeat="idea in vm.ideas | orderBy: '-votes'">
        <div>
            <h2>{{idea.name}}</h2>
            <p>{{idea.desc|limitTo: 190}}</p>
            <span class="btn" ng-click="vm.upVote(idea)">Vote! <span class="badge"> {{idea.votes}}</span></span>
        </div>
    </div>
</div>

Plunker版本：

它做什么，它就会从火力点的数据，并正确地显示出来，但是当我按下按钮来调用函数给予好评，只在本地更新。我知道为什么它只能在本地，但我不知道如何使它的火力也会更新。

What it does, it gets the data from firebase and displays it correctly, but when I push the button to call upVote function it only updates locally. I know why it only works locally, but I don't know how to make it also update in firebase.

我试着$ bindTo，但是从我的理解它需要$范围的工作，我想用控制器作为虚拟机的格局没有注入$范围。

I've tried with $bindTo, but from what I understand it requires $scope to work, and I'm trying to use "Controller as vm" pattern without injecting $scope.

谁能告诉我该怎么咬？

tl;dr; — 3-way data-binding does not work with ControllerAs syntax. The `bindTo` method requires `$scope`.

You can use AngularFire with ControllerAs syntax, but you can't use it with ControllerAs with $bindTo.

$ bindTo 对 $范围硬依赖，这将打破没有它。

$bindTo has a hard dependency on $scope and it will break without it.

如果你想使用AngularFire与ControllerAs语法的示例，请查看 这Plunker演示

If you want an example of using AngularFire with ControllerAs syntax, check out this Plunker demo.

  angular.module('app', ['firebase'])

  // constant for the Firebase we're using
  .constant('FBURL', 'https://<your-firebase>.firebaseio.com/todos')

  // return the Firebase ref as a service
  .service('Ref', ['FBURL', Firebase])

  // return the Todos from Firebase by returning the
  // array from the factory
  .factory('Todos', function(Ref, $firebase) {
    return $firebase(Ref).$asArray();
  })

  // inject the Todos and assign them to "this"
  // for the ControllerAs syntax
  .controller('MainCtrl', function(Todos) {
    this.todos = Todos;
  });

这篇关于火力地堡3路数据和ControllerAs语法结合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！

controllerAs