Question

我正在制作适合个人用户使用的待办事项应用程序。我可以在没有用户ID的情况下将数据粘贴到数据库中，但是当我尝试将google ID添加到架构和数据库时，将引发类型错误。我的猫鼬模式似乎坏了

TodoController.js

var bodyParser = require("body-parser");
var mongoose = require("mongoose");
const keys = require("../configs/keys");
const Todo = require("../models/todo-model")
//Connect to the database
mongoose.connect(keys.mongodb.tododbURL,() => {
    console.log("connected to mongodb server");
});

   

//var data = [{item:"get milk"}, {item:"walk nan"}, {item:"code for a bit"}];
var urlencodedParser = bodyParser.urlencoded({ extended: true });

const authCheck = (req, res, next) =>{
    if(!req.user){
        //executed if user isn't logged in
        res.redirect("/");
    } else {
        //if logged in
        next(); // fires to the next functionS
    }
};


module.exports = function(app){
    
    app.get("/todo", authCheck, function(req, res){
        //Get data from mongoDB andd pass through view
        Todo.find({}, function(err, data){
            if (err) throw err;
            res.render("todo", {todos:data});
        });
        console.log(req.user.googleID)
    });
    

    app.post("/todo", urlencodedParser,function(req, res){
        //get data from view and put it in the database
        var newTodo = Todo({item: req.body, googleID: req.user.googleID}).save(function(err, data){
            if (err) throw err;
            res.json(data);
        })
    });

    app.delete("/todo/:item", function(req, res){
        // delete requested item from the database
        Todo.find({item: req.params.item.replace(/\-/g, " ")}).remove(function(err, data){
            if(err) throw err;
            res.json(data);
        });
        
    });
};

req.user.googleID将返回诸如1374979743

todo-model.js

const mongoose = require("mongoose");


const todoSchema = new mongoose.Schema({
    todo: String,
    googleID: String 
});

const Todo = mongoose.model("Todo", todoSchema);
module.exports = Todo;

istening on port 3000
(node:2656) DeprecationWarning: current URL string parser is deprecated, and will be removed in a future version. To use the new parser, pass option { useNewUrlParser: true } to MongoClient.connect.
connected to mongodb server
connected to mongodb server
TypeError: Cannot read property 'googleID' of undefined

Answer 1

如果user是您发送到请求正文中的API（我做了这个结论，因为我没有在代码段中看到passportjs的用法），那么您会收到此错误，因为您使用req.user.googleID而不是req.body.user.googleID。 bodyParser从HTTP请求的正文中解析JSON，并将其放在req.body下。

Answer 2

发现了问题，我打电话给req.body而不是req.body.item。我必须调用item，因为我现在将两个item推送到数据库中了，但是现在可以正常工作了，我意识到在CS类中途可以使用一个数据库

猫鼬TypeError：无法读取未定义的属性“ googleID”

2 个答案: