当我创建新的博客文章并尝试提交时，我收到以下错误：“TypeError：无法读取未定义的属性'_id'”
以下是“id未定义”的代码
// CREATE ROUTE
router.post("/", function(req, res){
// Sanitizes blog body to prevent harmful content through it
req.body.blog.body = req.sanitize(req.body.blog.body);
// get data from form and add to blogs array
var title = req.body.title;
var image = req.body.image;
var body = req.body.body;
var author = {
id: req.user._id,
username: req.user.username
};
var newBlog = { title: title, image: image, body: body, author: author};
//Create blog
Blog.create(newBlog, function(err, newlyCreated){
//handle error if can't create post
if(err){
res.render("bposts/new");
//otherwise post it and redirect back to Blog Posts
} else {
console.log(newlyCreated);
res.redirect("/bposts");
}
});
});
此行正在触发错误：
var author = {
id: req.user._id,
username: req.user.username
};
我也在下面发布我的模型和app.js。当我对这个主题进行研究时，似乎所有人都无法通过req.something.whateverPropertyTryingToParse或在我的情况下req.user._id解析。我的身体解析器已安装并保存到package.json文件中，您将在我的app.js文件中看到。我不知道为什么它无法解析id。任何有关为何发生这种情况的帮助和解释都表示赞赏。
博客模型：
var mongoose = require("mongoose");
// SCHEMA
var blogSchema = new mongoose.Schema({
title: String,
image: String,
body: String,
created: {type: Date, default: Date.now},
author: {
id: {
type: mongoose.Schema.Types.ObjectId,
ref: "User"
},
username: String
},
comments: [
{
type: mongoose.Schema.Types.ObjectId,
ref: "Comment"
}
]
});
//MODEL
module.exports = mongoose.model("Blog", blogSchema);
用户模型：
var mongoose = require("mongoose");
var passportLocalMongoose = require("passport-local-mongoose");
var UserSchema = new mongoose.Schema({
username: {type: String, unique: true, required: true},
password: String,
// avatar: String,
firstName: String,
lastName: String,
email: {type: String, unique: true, required: true},
// resetPasswordToken: String,
// resetPasswordExpires: Date,
// isAdmin: {type: Boolean, default: false}
});
UserSchema.plugin(passportLocalMongoose);
module.exports = mongoose.model("User", UserSchema);
app.js
var express = require("express"),
app = express(),
bodyParser = require("body-parser"),
mongoose = require("mongoose"),
expressSanitizer = require("express-sanitizer"),
passport = require("passport"),
cookieParser = require("cookie-parser"),
LocalStrategy = require("passport-local"),
flash = require("connect-flash"),
session = require("express-session"),
moment = require("moment"),
User = require("./models/user"),
// seedDB = require("./seeds"),
methodOverride = require("method-override");
// APP CONFIG
mongoose.connect("mongodb://localhost/blog", {useMongoClient: true});
//PRODUCTION CONFIG - LIVE URL GOES HERE!
app.set("view engine", "ejs");
app.use(express.static(__dirname + "/assets"));
app.use(bodyParser.urlencoded({extended: true}));
app.use(expressSanitizer());
app.use(methodOverride("_method"));
app.use(cookieParser('secret'));
//require moment
app.locals.moment = require('moment');
// seedDB(); //seed test data!
// PASSPORT CONFIGURATION
app.use(require("express-session")({
secret: "It's a secret to everyone!!",
resave: false,
saveUninitialized: false
}));
app.use(flash());
app.use(passport.initialize());
app.use(passport.session());
passport.use(new LocalStrategy(User.authenticate()));
passport.serializeUser(User.serializeUser());
passport.deserializeUser(User.deserializeUser());
app.use(function(req, res, next){
res.locals.currentUser = req.user;
res.locals.success = req.flash('success');
res.locals.error = req.flash('error');
next();
});
// REQUIRE ROUTES
var commentRoutes = require("./routes/comments"),
bpostRoutes = require("./routes/bposts"),
indexRoutes = require("./routes/index");
//USE ROUTES
app.use("/", indexRoutes);
app.use("/bposts", bpostRoutes);
app.use("/bposts/:id/comments", commentRoutes);
//RUN SERVER
app.listen(process.env.PORT, process.env.IP, function(){
console.log("The Server Has Started!");
});
//MIDDLEWARE
var Comment = require('../models/comment');
var Blog = require('../models/blog');
module.exports = {
isLoggedIn: function(req, res, next){
if(req.isAuthenticated()){
return next();
}
req.flash('error', 'You must be signed in to do that!');
res.redirect('/login');
},
checkUserBlog: function(req, res, next){
Blog.findById(req.params.id, function(err, foundBlog){
if(err || !foundBlog){
console.log(err);
req.flash('error', 'Sorry, that Blog does not exist!');
res.redirect('/bposts');
} else if(foundBlog.author.id.equals(req.user._id) || req.user.isAdmin){
req.Blog = foundBlog;
next();
} else {
req.flash('error', 'You don\'t have permission to do that!');
res.redirect('/bposts/' + req.params.id);
}
});
},
checkUserComment: function(req, res, next){
Comment.findById(req.params.commentId, function(err, foundComment){
if(err || !foundComment){
console.log(err);
req.flash('error', 'Sorry, that comment does not exist!');
res.redirect('/bposts');
} else if(foundComment.author.id.equals(req.user._id) || req.user.isAdmin){
req.comment = foundComment;
next();
} else {
req.flash('error', 'You don\'t have permission to do that!');
res.redirect('/bposts/' + req.params.id);
}
});
},
isAdmin: function(req, res, next) {
if(req.user.isAdmin) {
next();
} else {
req.flash('error', 'This site is now read only thanks to spam and trolls.');
res.redirect('back');
}
},
isSafe: function(req, res, next) {
if(req.body.image.match(/^https:\/\/images\.unsplash\.com\/.*/)) {
next();
}else {
req.flash('error', 'Only images from images.unsplash.com allowed.\nSee https://youtu.be/Bn3weNRQRDE for how to copy image urls from unsplash.');
res.redirect('back');
}
}
};
答案 0 :(得分：0)
不应该是
var author = {
id: req.body.user._id,
username: req.body.user.username
};
您能否显示您要发布的数据格式？