mongodb - Mongoose 中的自动递增ID

Question

如何在 mongoose 中使用自动增量 ID？我希望我的 ID 以 1、2、3、4 开头，而不是 mongodb 为您创建的奇怪 ID 数字？

这是我的架构:

var PortfolioSchema = mongoose.Schema({
    url: String,
    createTime: { type: Date, default: Date.now },
    updateTime: { type: Date, default: Date.now },
    user: {type: Schema.Types.ObjectId, ref: 'User'}
});

Answer 1

使用 mongoose 自动增量: https://github.com/codetunnel/mongoose-auto-increment

var mongoose = require('mongoose');
var autoIncrement = require('mongoose-auto-increment');
var connection = ....;
autoIncrement.initialize(connection);

var PortfolioSchema = new mongoose.Schema({
    url: String,
    createTime: { type: Date, default: Date.now },
    updateTime: { type: Date, default: Date.now },
    user: {type: Schema.Types.ObjectId, ref: 'User'}
});

//Auto-increment
PortfolioSchema.plugin(autoIncrement.plugin, { model: 'Portfolio' });

module.exports = mongoose.model('Portfolio', PortfolioSchema);

或者，如果您更喜欢使用附加字段而不是覆盖 _id，只需添加该字段并将其列在自动增量初始化中:

var PortfolioSchema = new mongoose.Schema({
    portfolioId: {type: Number, required: true},
    url: String,
    createTime: { type: Date, default: Date.now },
    updateTime: { type: Date, default: Date.now },
    user: {type: Schema.Types.ObjectId, ref: 'User'}
});

//Auto-increment
PortfolioSchema.plugin(autoIncrement.plugin, { model: 'Portfolio', field: 'portfolioId' });