angular.js:模型更新不会触发视图更新 [英] angular.js: model update doesn't trigger view update

问题描述

我目前正在开发基于 Web 的 twitter 客户端，因此我使用了 angular.js、node.js 和 socket.io.我通过 socket.io 将新推文推送到我的客户端，在那里服务等待新推文.当一条新推文到达时，该服务通过 $broadcast 发送一个事件.

i'm currently working on a web based twitter client and therefore i used angular.js, node.js and socket.io. i push new tweets via socket.io to my client, where a service waits for new tweets. when a new tweet arrives, the service send an event via $broadcast.

在我的控制器中是一个事件监听器，传入的推文在一个单独的函数中被处理.此函数只是将新推文推送到我的推文范围内.

in my controller is a event listener, where incoming tweets are being processed in an seperate function. this function simply pushes the new tweet in my tweet scope.

现在，我的问题是，我的视图没有更新，但我可以看到我的范围在扩大.也许你们中的一个人有一个想法，我该如何解决这个问题?

now, my problem ist, that my view is not updating but i can see my scope growing. maybe one of you have an idea, how i can solve this?

另外我的代码:

服务:

(function () {
    app.factory('Push', ['$rootScope', function ($rootScope) {
        socket.on('new-tweet', function (msg) {
            $rootScope.$broadcast('new-tweet', msg);
        });
    }]);
}());

控制器:

(function () {
    app.controller("StreamCtrl", function StreamCtrl ($scope, $rootScope, $http, Push) {
        $scope.tweets = [];

        $http
            .get('/stream')
            .then(function (res) {
                $scope.tweets = res.data;
            });

        $scope.addTweet = function (data) {
            $scope.tweets.push(data);
            console.log($scope.tweets);
        };

        $rootScope.$on('new-tweet', function (event, data) {
            if (!data.friends) {
                $scope.addTweet(data);
            }
        });
    });
}());

整个项目在这里:https://github.com/hochitom/node-twitter-client

推荐答案

在addTweet中添加下面这行代码，问题就解决了

Adding below line of code in addTweet and the problem would be solved

$scope.addTweet = function (data) {
            $scope.tweets.push(data);
            $scope.$apply();
            console.log($scope.tweets);
        };

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