Question

创建一个具有Web应用程序的练习，该应用程序让用户输入其投票者ID并选择一个区号。然后，它显示了所有全州和地方选举比赛。全州范围内的区号为0，而本地人列出的特定区号为1到6。使用.find函数时，它仅适用于本地和全州范围，但是当使用$ or两者时，我得到一个“解析”错误：第55行出现意外的令牌：”。我安装了mongo，monogodb，mongoose，jquery，express，express-handlebars和body解析器。

const express = require('express');

let app = express();

let bodyParser = require('body-parser');
app.use( bodyParser.urlencoded( {extended: false} ) );

// Mongoose options
const options = { server: {socketOptions: {keepAlive: 1} } };

// Set up first mongoose connection
let mongoose1 = require('mongoose');
let db1 = mongoose1.createConnection('mongodb://ballotRO:XooRqtLAxe9ZKK@ds143953.mlab.com:43953/project5', options);
let Race = require('./models/race.js')(db1);

// Set up second mongoose connection
let mongoose2 = require('mongoose');
let db2 = mongoose2.createConnection('mongodb://disuser:RqCRfwUck5B7jYV@ds121192.mlab.com:21192/project5-results', options);
let Vote = require('./models/vote.js')(db2);

// Open the connections
db1.on('error', console.error.bind(console, 'connection error:'));
db1.once('open', function() { console.log("db1 connected"); });

db2.on('error', console.error.bind(console, 'connection error:'));
db2.once('open', function() { console.log("db2 connected"); });


// set up handlebars view engine
let handlebars = require('express-handlebars')
    .create({ defaultLayout:'main' });
app.engine('handlebars', handlebars.engine);
app.set('view engine', 'handlebars');

app.set('port', process.env.PORT || 3000);

app.use(express.static(__dirname + '/public'));


app.get('/', function(req, res) {
    res.render('home');
});

// Get the appliacable races and then render the ballot
// expects a form submission witha district and voterId
app.post('/ballot', function(req, res) {

    // Make sure the form contains a district and a voter id

    if(req.body && req.body.district && req.body.voterId) {

        const districtInt = parseInt(req.body.district);

        Race.find($or : [{districts: 0}, {districts: districtInt}]).then(function(races) {
            res.render("ballot", {
                voterId: req.body.voterId,
                district: districtInt,
                races: races,
            });
        }).catch(function(err) {
            console.log(err);
            res.redirect("/");
        });

    } else {

        res.redirect("/");
    }

});


app.post("/vote", function(req, res) {

    if(req.body.voterId) {
        console.log(req.body);

        const votes = Object.assign({}, req.body);
        delete votes.voterId;
        delete votes.disctrict;

        new Vote({
            voterid: req.body.voterId,
            district: req.body.district,
            votes: votes
        }).save().then(function(savedVote) {

        });

        res.redirect("/");
    }
});

// 404 catch-all handler (middleware)
app.use(function(req, res, next){
    res.status(404);
    res.render('404');
});

// 500 error handler (middleware)
app.use(function(err, req, res, next){
    console.error(err.stack);
    res.status(500);
    res.render('500');
});

app.listen(app.get('port'), function(){
  console.log( 'Express started on http://localhost:' +
    app.get('port') + '; press Ctrl-C to terminate.' );
});

解析错误：意外令牌：$ or之后

0 个答案: