Question

我有一个带有嵌入式鉴别器的方案，我想克隆它。但是，当我从此克隆模式创建模型并尝试创建文档时，与该标识符相关的某些属性就消失了。

代码在这里

const mongoose = require('mongoose');

const propertiesSchema = new mongoose.Schema({
  name: { type: String },
},
{ discriminatorKey: 'type', _id: false });

const collectionSchema = new mongoose.Schema({
  name: { type: String },
  properties: [propertiesSchema]
});

const propertiesArray = collectionSchema.path(`properties`);

propertiesArray.discriminator(`type1`,
 new mongoose.Schema({ type1: String }, { _id: false })
);

propertiesArray.discriminator(`type2`,
 new mongoose.Schema({ type2: String }, { _id: false })
);

const Collection = new mongoose.model('Collection', collectionSchema);
const Clone = new mongoose.model('Clone', Collection.schema.clone());

const data = {
  name: "Collection",
  properties: [
    { type: "type1", type1: "type1-1" },
    { type: "type2", type2: "type2-2" }
  ]
}


console.log(new Collection(data));
console.log(new Clone(data));

结果是：

{ _id: 5d1b583e6d2d8b519c8849b8,
  name: 'Collection',
  properties:
   [ { type: 'type1', type1: 'type1-1' },
     { type: 'type2', type2: 'type2-2' } ] }
{ _id: 5d1b583e6d2d8b519c8849b9,
  name: 'Collection',
  properties: [ { type: 'type1' }, { type: 'type2' } ] }

问题是-为什么文档不同，如何正确克隆或在克隆方案中“重新应用”鉴别符？

节点：v10.15.3 猫鼬：5.6.2

Answer 1

问题将在5.6.4版中修复

Github fix commit

阵列中带有嵌入式鉴别符的架构未正确克隆

1 个答案: