MongoDB用Mongoose得到的对象不能增加属性完美解决方法(两种)

一，先定义了一个goods(商品)的models

var monGoose = require('mongoose');
var Schema = mongoose.Schema;
var productSchema = new Schema({
  "productId":String,
  "producName": String,
  "salePrice":Number,
  "productImage":String
});
module.exports=mongoose.model("Good",productSchema,'goods');