尝试将已保存的游戏与保存该游戏的用户相关联时,我收到错误消息。错误显示“无法读取未定义的属性推送”
可以在控制台中读取用户和游戏。我认为这可能与用户初始创建期间的用户模型有关,但是我不确定。我确实注意到,如果我尝试console.log(user.favGames)
,它将返回未定义的状态。
我已经尝试了所有可以想到的事情,已经将控制器重写了大约10次,但无济于事。
用户模型
const mongoose = require('mongoose')
const bcrypt = require('bcrypt')
const SALT_ROUNDS = 6
const Schema = mongoose.Schema
const userSchema = new Schema(
{
username: { type: String, unique: true },
email: { type: String, unique: true, unique: true },
password: { type: String, required: true },
avatar: { type: String },
favGames: { type: Schema.Types.ObjectId, ref: 'Game', default: null },
comments: { type: Schema.Types.ObjectId, ref: 'Comment', default: null }
},
{
timestamps: true
}
)
userSchema.set('toJSON', {
transform: function(doc, ret) {
delete ret.password
return ret
}
})
userSchema.pre('save', function(next) {
const user = this
if (!user.isModified('password')) return next()
bcrypt.hash(user.password, SALT_ROUNDS, function(err, hash) {
if (err) return next()
user.password = hash
next()
})
})
userSchema.methods.comparePassword = function(tryPassword, cb) {
bcrypt.compare(tryPassword, this.password, cb)
}
module.exports = mongoose.model('User', userSchema)
游戏模型
const mongoose = require('mongoose')
const Schema = mongoose.Schema
let gameSchema = new Schema({
name: { type: String, required: true },
boxArtUrl: { type: String, required: true },
twitchID: { type: String, required: true },
comments: { type: Schema.Types.ObjectId, ref: "Comment"}
})
module.exports = mongoose.model('Game', gameSchema)
游戏路由器
const express = require('express')
const router = express.Router()
const gamesCtrl = require('../../controllers/gameCtrl')
function isAuthed(req, res, next) {
if (req.user) return next()
return res.status(401).json({ msg: 'Unauthorized ' })
}
router.get('/')
router.post('/', isAuthed, gamesCtrl.addGame)
module.exports = router
游戏控制器
const User = require('../models/user')
const Game = require('../models/Game')
function addGame(req, res) {
Game.create({
name: req.body.name,
twitchID: req.body.id,
boxArtUrl: req.body.box_art_url
})
.then(game => {
User.findById(req.user._id)
.then(user => {
console.log(game)
console.log(user.favGames)
// user.favGames.push(game)
// user.save()
})
.catch(err =>
console.log('error when updating user with new game', err)
)
})
.catch(err => console.log('error saving game', err))
}
module.exports = {
addGame
}
该错误在我的控制器中标记为user.favGames.push(game)
。请注意,当用户创建个人资料时,没有与其个人资料相关联的游戏。我很确定我要调用模型的实际数据实例,而不是模型本身。预先感谢您的协助。
答案 0 :(得分:0)
看起来好像要检查是否存在:
User.findById(req.user._id)
.then(user => {
if (!Array.isArray(user.favGames)) {
user.favGames = [];
}
user.favGames.push(game);
user.save();
})
答案 1 :(得分:0)
您的favGames(以及注释)必须在这样的用户模型中定义为数组。
const userSchema = new Schema(
{
username: { type: String, unique: true },
email: { type: String, unique: true, unique: true },
password: { type: String, required: true },
avatar: { type: String },
favGames: [{ type: Schema.Types.ObjectId, ref: 'Game', default: null }],
comments: [{ type: Schema.Types.ObjectId, ref: 'Comment', default: null }]
},
{
timestamps: true
}
)
也user.save()返回一个promise,所以您需要使用then阻止或等待。
所以addGame函数必须是这样的(我将代码转换为async / await)
async function addGame(req, res) {
try {
let game = await Game.create({
name: req.body.name,
twitchID: req.body.id,
boxArtUrl: req.body.box_art_url
});
let user = await User.findById(req.user._id);
if (user) {
user.favGames.push(game);
await user.save();
res.status(200).send("game and user saved");
} else {
console.log("user not found");
res.status(404).send("user not found");
}
} catch (err) {
console.log("Err: ", err);
res.status(500).send("Something went wrong");
}
}