Question

我正在尝试从不同的集合中查询用户名，然后才能插入另一个集合

这是 Post.js 文件

    var mongoose = require('mongoose');

    var user = require('./Users.js'); 

var PostSchema = mongoose.Schema({
    uid : String,
    text: String,
    usename: String,
    date: Date,
    upvotes: Number,
    downvotes: Number
}); 


var Post = module.exports = mongoose.model('Post', PostSchema);


module.exports.newPost = function(data){
    var userid = data.uid;
    var username = '';
    user.User.findOne({_id:userid}, function(err,data){
        if(err) req.flash('error_msg','Invalid username');
        console.log(data)
    });

};

这是路线Index.js 文件

var express = require('express');
var router = express.Router();

var Posts = require('../models/Post.js');
var uid = '';

router.get('/', ensureAuthenticated, function (req, res) {
    uid = req.query.uid;
    console.log(uid);
    res.render('index')
})


router.post('/', function(req, res){
    var post = req.body.post;
    var date = Date();
    var postData = {
        uid : uid,
        text: post,
        usename: uid,
        date: date,
        upvotes: 0,
        downvotes: 0
    };
    console.log(postData);
    Posts.newPost(postData);
});

function ensureAuthenticated(req, res, next){
    if(req.isAuthenticated()){
        return next();
    } else {
        req.flash('error_msg','You are not logged in');
        res.redirect('/users/login');
    }
}


module.exports = router;

这是 User.js 文件

var mongoose = require('mongoose');
var bcrypt = require('bcryptjs');

// User Schema
var UserSchema = mongoose.Schema({
    username: {
        type: String,
        index:true
    },
    password: {
        type: String
    },
    email: {
        type: String
    },
    name: {
        type: String
    }
});

var User = module.exports = mongoose.model('User', UserSchema);

当我运行服务器并提交以获取用户名时，我收到以下错误

TypeError: Cannot read property 'newPost' of undefined
   at /home/a0_/Projects/Node/forum/routes/index.js:26:12

整个代码位于https://github.com/nerditall/forum

Answer 1

在Mongoose实例中，方法应附加到架构：

PostSchema.methods.newPost = function(...) {...}

滚动到“实例方法”http://mongoosejs.com/docs/guide.html

无法读取未定义的属性'newPost'

1 个答案: