mongoose save vs insert vs create

问题描述

使用Mongoose将文档（记录）插入MongoDB有哪些不同方法？

我当前的尝试：

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

var notificationsSchema = mongoose.Schema({
    "datetime" : {
        type: Date,
        default: Date.now
    },
    "ownerId":{
        type:String
    },
    "customerId" : {
        type:String
    },
    "title" : {
        type:String
    },
    "message" : {
        type:String
    }
});

var notifications = module.exports = mongoose.model('notifications', notificationsSchema);

module.exports.saveNotification = function(notificationObj, callback){
    //notifications.insert(notificationObj); won't work
    //notifications.save(notificationObj); won't work
    notifications.create(notificationObj); //work but created duplicated document
}

任何想法为什么插入和保存不在我的情况下工作？我试过创建，它插入2个文件而不是1.这很奇怪。

Any idea why insert and save doesn't work in my case? I tried create, it inserted 2 document instead of 1. That's strange.

推荐答案

.save（ ）是模型的实例方法，而 .create（）是直接从模型中调用的作为方法调用，本质上是静态的，并将对象作为第一个参数。

The .save() is an instance method of the model, while the .create() is called directly from the Model as a method call, being static in nature, and takes the object as a first parameter.

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

var notificationSchema = mongoose.Schema({
    "datetime" : {
        type: Date,
        default: Date.now
    },
    "ownerId":{
        type:String
    },
    "customerId" : {
        type:String
    },
    "title" : {
        type:String
    },
    "message" : {
        type:String
    }
});

var Notification = mongoose.model('Notification', notificationsSchema);


function saveNotification1(data) {
    var notification = new Notification(data);
    notification.save(function (err) {
        if (err) return handleError(err);
        // saved!
    })
}

function saveNotification2(data) {
    Notification.create(data, function (err, small) {
    if (err) return handleError(err);
    // saved!
    })
}

导出你想要的任何功能。

Export whatever functions you would want outside.

更多信息，请访问，或考虑阅读原型的参考在Mongoose。

More at the Mongoose Docs, or consider reading the reference of the Model prototype in Mongoose.

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