如何使用角度1 - es6从Pubnub获取消息历史记录和传入消息

时间:2016-12-02 17:59:19

标签: angularjs ecmascript-6 pubnub

当我成功发布到我的Pubnub频道时,我希望看到消息历史记录以及传入消息。按照教程,我创建了以下控制器(component / chat / chat.controller.js)

/*jshint esnext: true */
'use strict';

  class ChatController {
    constructor($scope, $rootScope, Pubnub) {
        this.cardTitle = "chat window";
        $scope.messages = [];
        $scope.channel = 'Channel-jlinog5q8';

        $scope.messageContent = '';

        Pubnub.init({
            "publishKey": publishKey,
            "subscribeKey": subscribeKey,
        });

        // Subscribe to messages channel
        Pubnub.subscribe({
            channel: $scope.channel,
            triggerEvents: ['callback'],
        });
        // $scope.messageEvents = Pubnub.getMessageEventNameFor($scope.channel)

        Pubnub.history({
            channel:$scope.channel,
            callback: function(payload){
                console.log(payload);
                $scope.messages.unshift(payload.message);
            }
        })


        // Send the messages over PubNub Network
        $scope.sendMessage = function() {
            $scope.uuid = $rootScope.userInfo.first_name +' '+$rootScope.userInfo.last_name;

           // Don't send an empty message 
           if (!$scope.messageContent ||
                $scope.messageContent === '') {
                return;
            }
            Pubnub.publish({
                channel: $scope.channel,
                message: {
                    content: $scope.messageContent,
                    sender_uuid: $scope.uuid,
                    date: new Date()
                },
                callback: function(m) {
                    debugger
                },
                error: function (error) {
                    debugger
                    console.log('Error:', error);
                }
            });
            // Reset the messageContent input
            $scope.messageContent = '';

        }

        // Listenning to messages sent.
        $scope.$on(Pubnub.getMessageEventNameFor($scope.channel), function (ngEvent, envelope) {
            $scope.$apply(function () {
                debugger
                // add message to the messages list
                $scope.messages.unshift(envelope.message);
            });
        });


    }

  activate($rootScope, PubNub, $scope) {
    }
}

ChatController.$inject = ['$scope', '$rootScope', 'Pubnub'];

export default ChatController;

我能够看到消息成功发布,但我看不到我订阅的频道中的消息。

组件/聊天/ chat.html:

    <ul class="collection">
     <li ng-repeat="message in messages">
       <!-- <img src="{{avatarUrl(message.sender_uuid)}}" alt="{{message.sender_uuid}}"> -->
       <span class="title">{{ message.sender_uuid }}</span>
       <p>{{ message.date | date:"MM/dd/yyyy 'at' h:mma"}}</br> {{ message.content }}</p>
     </li>
  </ul> 

我认为问题出在$scope.$on,但我不知道该怎么办?

1 个答案:

答案 0 :(得分:1)

您使用的是哪个版本的PubNub Javascript SDK?从您提供的代码段,您看起来正在使用PubNub Javascript SDK v3的API。

init函数的语法看起来不对。

如果您将PubNub AngularJS SDK与PubNub JS SDK v3一起使用,它应该是:

Pubnub.init({
            publish_key: publishKey,
            subscribe_key: subscribeKey
        });

如果您将PubNub AngularJS SDK与PubNub JS SDK v4一起使用,它应该是:

Pubnub.init({
            publishKey: publishKey,
            subscribeKey: subscribeKey
        });

你应该更新方法以使用PubNub Javascript SDK v4的API: https://www.pubnub.com/docs/angularjs/api-reference-sdk-v4

如果它解决了您的问题,请告诉我。 马丁