将猫鼬文档中的默认日期设置为现在+ [以某种增量] [英] Set default date in Mongoose document to now + [some increment]

问题描述

希望将文档的默认时间戳设置为现在+ 1分钟/小时/天.我将如何进行修改以做到这一点:

Looking at setting a default timestamp for a document to now + 1 minute/hour/day. How would I go about modifying this to do so:

date: { type: Date, default: Date.now }

推荐答案

您可以定义 默认 ，具有以下功能:

You can define a default with a function:

var minuteFromNow = function(){
    var timeObject = new Date();
    timeObject.setTime(timeObject.getTime() + 1000 * 60);
    return timeObject;
};

new Schema({
    date: { type: Date, default: minuteFromNow }
})

---

-编辑-

您还可以使用 momentjs 库，该库在日期上有一些很棒的方法对象，尤其是您的 add() 函数用例:

You can also use the momentjs library which has got some fantastic methods on the date object, in particular the add() function for your use case:

var moment = require('moment');
var hourFromNow = function(){
    return moment().add(1, 'hour');
};

new Schema({
    date: { type: Date, default: hourFromNow }
})


/* OR */
new Schema({
    date: { type: Date, default: function(){return moment().add(1, 'hour');} }
})

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