mongoose-virtualプロパティ

mongooseはバーチャルプロパティ(virtual property)をサポートしています、このトピックで紹介します。

var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/test01');

var PersonSchema = new mongoose.Schema({
  name:{
      first:String,
      last:String
  }
});
PersonSchema.virtual('name.full').get(function(){
    return this.name.first + ' ' + this.name.last;
});
PersonSchema.virtual('name.full').set(function(name){
    var split = name.split(' ');
    this.name.first = split[0];
    this.name.last = split[1];
});

var db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', function callback () {

    var PersonModel = mongoose.model('Person',PersonSchema);

    var person1 = new PersonModel({
      name:{first:'koma',last:'endia'}
    });
    console.log("person1=" + person1.name.first + " " + person1.name.last);
    console.log("person1=" + person1.name.full);

    var person2 = new PersonModel({});
    person2.name.full = "koma endia";
    console.log("person2=" + person2.name.first + " " + person2.name.last);
    console.log("person2=" + person2.name.full);
});

$node virtual.js
person1=koma endia
person1=koma endia
person2=koma endia
person2=koma endia