在角度工厂使用插座

时间:2016-01-03 18:41:29

标签: javascript jquery html angularjs node.js

我试图使用角度服务,以便从我的节点js服务器传递到我的视图json对象。 我对服务函数进行了调查,发现它确实是在获取对象,但当我返回对象数组时,我正在使用$ scope.messages = undefined。

我的服务器代码:

var express = require("express");
var url = require("url");
var app = express(); // express.createServer();
var server = require('http').createServer(app);
var io = require('socket.io').listen(server);
server.listen(8080);
app.use(express.static(__dirname + '/public'));
var MongoClient = require('mongodb').MongoClient
, format = require('util').format;

var insertMsg, Collection;
var socketMap = {};

MongoClient.connect('mongodb://127.0.0.1:27017/EladGuy', function(err, db) {
    if(err) 
        throw err;
    Collection = db.collection('messages');
    console.log("connected to DB");
});

app.get("/*", function(request, response) {
    var screen = url.parse(request.url).pathname;
    check = String(screen).split("=");
    check2 = String(screen).split("/");
    if (check[0] != "/screen" && check2[1] != "html") {
        response.sendFile(__dirname + '/public/index.html');
    } else {
        if (check[1]>0 && check[1]<4) {
            saveScreen = check[1];
            response.sendFile(__dirname + '/public/oldIndex.html');
        } else if (check2[1] == "html") {
            response.sendFile(__dirname + screen);
        } else {
            response.sendFile(__dirname + '/public/index.html');
        }
    }
});

io.sockets.on('connection', function(socket) {
    socket.on('sendId', function(stationId) {
        socketMap[parseInt(stationId)] = socket;
    });
    socket.on('getMessages', function(unUsed) {
        res = [];
        Collection.find({"screensId":{'$eq': parseInt(saveScreen)}}).toArray(function(err, docs) {
            docs.forEach(function(doc) {
                res.push(doc);
            });
            socket.emit('sendMessages', res);
        });
    });
    socket.on('getAllMessages',function(unUsed){
        res = [];
        Collection.find().toArray(function(err, docs) {
            docs.forEach(function(doc) {
                res.push(doc);
            });
            console.log("STAM CHECK:" + res[0].name);
            socket.emit('sendAllMessages', res);
        });
    });
});

main.js代码(用于旋转,服务和控制器):

var myApp = angular.module('myApp', ['ngRoute']);

myApp.config(function($routeProvider) {
    $routeProvider
        .when('/',
            {
                controller: 'HomeController',
                templateUrl: 'menu.html'
            })
        .when('/stations',
            {
                controller: 'StationsController',
                templateUrl: 'messagesView.html'
            })
        .when('/',
            {
                controller: 'HomeController',
                templateUrl: 'menu.html'
            })
        .otherwise({redirectTo: '/'});
});
 var customersService = function ($http, $q) {
        var addsFactory = {};
        var socket = io.connect('http://localhost:8080');
        addsFactory.getMessages = function () {
            socket.emit('getAllMessages',null);
            socket.on('sendAllMessages',function (result) {
                return result;
            });
        };
        return addsFactory;
 };
  myApp.factory('customersService', ['$http', '$q', customersService]);


myApp.controller('StationsController',function($scope,customersService){
    $scope.messages = [];
    $scope.messages = customersService.getMessages();
});

myApp.controller('HomeController',function($scope){
    $scope.message="Loaded Menu!!";
});

可以帮助我知道我的问题是什么?

1 个答案:

答案 0 :(得分:-1)

您已将n == 1封装在变量addsFactory.getMessages中。然后在外部函数中,您尝试使用customersService调用它。您定义它的方式是customersService本身就是一个函数,并且其中有一个customersService.getMessages();对象,其函数为addsFactory。你能看到你的函数调用与那个不匹配吗?有各种各样的方法可以解决这个问题。您需要在外部范围中定义此函数:

getMessages

这样,您可以将function getMessages(socket) { socket.emit('getAllMessages',null); socket.on('sendAllMessages',function (result) { return result; }); }; 函数公开给控制器并为其指定getMessages个参数。然后你可以通过socket调用它并将返回的值传递给你想要的任何值。您应该阅读一些有棱角的最佳实践。我推荐John Papa's style guide