猫鼬日期字段 - 将默认设置为date.now + N天

问题描述

在mongoose模式中，例如：

In a mongoose schema such as:

var EventSchema = new Schema({
	title: {
		type: String,
		default: '',
		trim: true,
		required: 'Title cannot be blank'
	},
	description: {
		type: String,
		default: '',
		trim: true
	},
	start: {
		type: Date,
		default: Date.now,
		required: 'Must have start date - default value is the created date'
	},
	end: {
		type: Date,
		default: Date.now + 7 Days, // Date in one week from now
		required: 'Must have end date - default value is the created date + 1 week'
	},
	tasks: [{
		type: Schema.ObjectId,
		ref: 'Task'
	}]
});

在结束字段的行上，默认日期应设置为+7天。我可以添加预设钩子并将其设置在那里，但想知道是否有一种方法可以在默认字段中内联。

On the line for the "end" field the default date should set to +7 days. I can add presave hook and set it there, but wondering if theres a way to do this inline in the default field.

推荐答案

您可以将7天转换为毫秒转换为当前日期，如此

You can add 7 days converted to milliseconds to current date like this

default: new Date(+new Date() + 7*24*60*60*1000)

甚至喜欢这个

default: +new Date() + 7*24*60*60*1000

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