[英]Node JS MongoDB Not Saving
我是Node JS的新手,所以我可能會缺少一些顯而易見的東西。 我最近一直試圖用貓鼬將一些數據保存到數據庫中,但是我的嘗試一直沒有成功。 盡管服務器告訴我它已保存,但是我數據庫中沒有數據跟蹤。
app.js(靠近底部的代碼的相關部分)
/* REQUIRES */
var express = require('express');
var mongoose = require('mongoose');
var bodyParser = require('body-parser');
var ejs = require('ejs');
var moment = require('moment');
var app = express();
var router = express.Router();
var port = 80;
moment().format();
/* MONGOOSE CONNECT & MODEL */
mongoose.connect('mongodb://127.0.0.1:27017/giveaway');
var Giveaway = require('./models/giveaway');
var Entry = require('./models/entry');
/* EXPRESS APP LISTEN */
app.listen(port, function() {
console.log('Magic happens on port %s.', port);
});
/* VIEW ENGINE, MIDDLEWARE SETUP, AND STATIC FILES */
app.set('view engine', 'html');
app.engine('html', ejs.renderFile);
app.use(express.static(__dirname + '/public'));
app.use(bodyParser.urlencoded({ extended: false }));
router.get('/:giveawayId', function(req, res, next) {
var giveawayId = req.params.giveawayId;
Giveaway.find({ _id: giveawayId }, function(err, giveaway) {
if (err) throw err;
if (Object.keys(giveaway).length < 1) {
/* NO GIVEAWAY WITH THAT TITLE */
console.log("error");
next();
} else {
res.render('pages/giveaway', { giveaway: giveaway });
}
});
});
router.post('/:giveawayId/enter', function(req, res, next) {
var giveawayId = req.params.giveawayId;
var name = req.body.name;
var email = req.body.email;
if (name !== "" && email !== "") {
Entry.findOne({ email: email }, function(err, entry) {
if (err) throw err;
if (entry !== null) {
/* ALREADY ENTERED */
console.log("error");
console.dir(entry);
next();
} else {
console.log("success");
var newEntry = new Entry({
name: name,
email: email,
giveaway: giveawayId
});
newEntry.save(function(err) { //PROBLEM IS HERE WHERE IT SAVES THE DATA
if (err) throw err;
res.redirect('/' + giveawayId);
});
}
});
}
});
app.use('/', router);
entry.js(相關模型)
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var entrySchema = new Schema({
name: String,
email: String,
giveaway: String,
dateEntered: Date,
winner: {
type: Boolean,
'default': false
}
});
entrySchema.pre('save', function(next) {
if (!this.dateEntered) {
this.dateEntered = new Date;
}
next();
});
var Entry = mongoose.model('Entry', entrySchema);
module.exports = Entry;
問題所在就是app.js
底部附近的代碼,其中將輸入程序保存到db中。 我假設這是我忽略的某種異步錯誤,但是所有幫助將不勝感激。 另一個可能有用的信息是入口變量的輸出。 即使數據未顯示在數據庫中,它也將顯示為查詢的結果。
error
model {
'$__':
InternalCache {
strictMode: true,
selected: undefined,
shardval: undefined,
saveError: undefined,
validationError: undefined,
adhocPaths: undefined,
removing: undefined,
inserting: undefined,
version: undefined,
getters: {},
_id: undefined,
populate: undefined,
populated: undefined,
wasPopulated: false,
scope: undefined,
activePaths: StateMachine { paths: [Object], states: [Object], stateNames: [Object] },
ownerDocument: undefined,
fullPath: undefined,
emitter: EventEmitter { domain: null, _events: {}, _eventsCount: 0, _maxListeners: 0 } },
isNew: false,
errors: undefined,
_doc:
{ __v: 0,
giveaway: 'NyX2sanGx',
email: 'test',
name: 'test',
dateEntered: Wed Nov 11 2015 19:13:50 GMT-0800 (PST),
_id: ObjectID { _bsontype: 'ObjectID', id: 'VD\u0003î½åwÑ89ì' } },
'$__original_save': { [Function] numAsyncPres: 1 },
save: [Function: wrappedPointCut],
_pres: { '$__original_save': [ [Object], [Object], [Object] ] },
_posts: { '$__original_save': [] } }
謝謝,卡梅隆·瓊斯
編輯:只是為了確認,我再次保存數據時,它顯示在數據庫內部完全沒有問題。 這只是最后一步。
讓Mongoose擱置一秒鍾,讓我們首先嘗試在Mongo上建模。
您的目標是每個贈品允許輸入1個電子郵件,因此您首先要創建唯一索引:
db.entry.ensureIndex({email:1, giveaway:1}, {unique:true});
接下來,要自動完成所有操作,您將使用upsert
(更新或插入)
編輯:刪除$ set部分
db.entry.update({
email: 'me@me.com',
giveaway: 1
}, {
$setOnInsert: {
name: 'John',
email: 'me@me.com',
giveaway: 1,
created: ISODate()
}
}, {
upsert: true
});
這意味着:嘗試使用電子郵件me@me.com
和贈品1
查找用戶,如果找不到該用戶,則使用名稱,電子郵件,贈品,創建和修改日期創建新條目。
要查看您的記錄:
db.entry.findOne()
{
"_id" : ObjectId("56441446e480d6b501bd0a93"),
"created" : ISODate("2015-11-12T04:23:34.086Z"),
"email" : "me@me.com",
"giveaway" : 1,
"name": "John"
}
貓鼬支持$ setOnInsert
var options = {
upsert: true,
'new': true,
setDefaultsOnInsert: true
};
var find = {
email: 'me@me.com',
giveaway: 1,
};
var setOnInsert = {
email: 'me@me.com',
giveaway: 1,
name: 'John',
created: new Date()
};
Entry.findOneAndUpdate(find, {$setOnInsert: setOnInsert}, options);
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.