Question

我正在node.js中编写快速应用程序，并且在更新此模型时遇到问题。

var reviewSchema = new mongoose.Schema({ 
    comment: {
        type: String,
        trim: true,
        max: 200
    },
    rating: { type: Number, trim: true, max: 10, min: 0 },
    user: {type: mongoose.Schema.Types.ObjectId, ref: 'User'}, 
    created: { type: Date, default:Date.now }
}); 


var eventSchema = new mongoose.Schema({ 
    name: { type: String, trim: true, max: 30 },
    venue: { type: String, trim: true, max: 30 },
    critic_review: String,
    user_reviews: [reviewSchema],  
});

此路线定义如下......

app.js

app.put('/event/:id/reviews', routes.events.addReview)

激活此功能

路由/ events.js

    // Route to update Event with a new Review
    exports.addReview = function(req, res, next) { 
        if(!req.params.id) return next(new Error('No event ID.'));
        req.models.User.findById(req.user, function(error, user) {

            // check if user's username is available to this route 
            if (req.user.username){console.log(req.user.username)}
            req.models.Event.findByIdAndUpdate(
                _id = req.params.id,
                {$push: {"user_reviews": 
                {comment: req.body.comment,    // correct
                 rating: req.body.rating,      // correct 
                 user: req.user.username       // causes error, see below
                }}},
                {safe: true},
                function(err, results)
                {
                    if (err) console.log(err);
                });
             res.redirect('/event');
            });
         }

应该更新事件模型。以下是玉石模板的一部分

视图/ event.jade

each review in item.user_reviews
    li #{review.user} says: #{review.comment} #{review.rating} # {review.created}

在localhost：3000 / event

中提供以下输出

says: test 5 Thu Jul 02 2015 17:51:53 GMT+0100 (GMT Daylight Time)

要检查＃{review.user}是空还是空，我添加了条件控制台日志（event.js：第6行），它给出了控制台输出

myname

所以req.user.username可用，但如果我尝试$ push它我会收到此错误：

[错误：无法使尚未添加到阵列的子文档无效]

我也试过传递

 user : req.session.passport.user

到$ push然后从模板中获取值，但这也不起作用。

我花了一些时间查找此错误消息，但我找不到任何有用的东西。如果有人能够对此有所了解，我将非常感激！谢谢你的阅读。

编辑

app.js

中的护照配置

var User = require('./models/user');
passport.use(new LocalStrategy(User.authenticate()));
passport.serializeUser(User.serializeUser());
passport.deserializeUser(User.deserializeUser());

// Registration 
app.post('/register', function(req, res) {
    User.register(new User({ email: req.body.email, username: req.body.username }), req.body.password,  function(err, user) {
        if (err) {
            console.log(err);
            return res.render('register', {info: "Sorry. That email already exists. Try again."});
        }

        passport.authenticate('local')(req, res, function() {
            console.log('Attempting auth');
            res.render('profile', { user: user });
            //res.redirect('/');
        });
    });
});

// Login authentication
app.post('/login', passport.authenticate('local'), function(req, res) {
    res.redirect('/');
});

app.js

中的应用曝光模型

// Expose models to app. 
app.use(function(req, res, next){ 
    if( !models.Article || !models.User || !models.Event ) 
        return next(new Error('No models.'));
    req.models = models;
    return next();
});

使用req.user对象更新文档

0 个答案: