使用 mongoose 時如何在子文檔中允許唯一字段？

Question

我正在使用 mongoose 來定義 2 個模式。

雇員.js

const mongoose = require("mongoose");
const uniqueValidator = require("mongoose-unique-validator");
const Role = require("./role");

const employeeSchema = mongoose.Schema({
  code: { type: String, required: true, unique: true, index: true },
  names: { type: String, required: true },
  last_names: { type: String, required: true },
  role: Role.schema,
  dui: { type: String, required: true, unique: true, index: true },
  nit: { type: String, required: false, unique: true, index: true },
  sex: { type: String, required: false },
  civil_status: { type: String, required: false },
  birthday: { type: Date, required: false },
  telephone: { type: String, required: true },
  city: { type: String, required: true },
  address: { type: String, required: true },
  active: { type: Boolean, required: true },
});


employeeSchema.plugin(uniqueValidator);

module.exports = mongoose.model("Employee", employeeSchema);

和角色.js

const mongoose = require("mongoose");
const uniqueValidator = require("mongoose-unique-validator");

const roleSchema = mongoose.Schema({
  code: { type: String, required: true, unique: true, index: true },
  description: { type: String, required: true }
});

roleSchema.plugin(uniqueValidator);

module.exports = mongoose.model("Role", roleSchema);

我遇到的問題是，每當我插入帶有重復角色代碼的文檔時，由於唯一驗證，我都會收到錯誤消息。 我試過刪除

roleSchema.plugin(uniqueValidator);

來自 role.js，我也嘗試過使用 .set 來改變角色中的字段。

const mongoose = require("mongoose");
const uniqueValidator = require("mongoose-unique-validator");
const Role = require("./role");

const subRole = Role.schema.clone().set('code', {unique: false}).set('code', {index : false});

const employeeSchema = mongoose.Schema({
  code: { type: String, required: true, unique: true, index: true },
  names: { type: String, required: true },
  last_names: { type: String, required: true },
  role: subRole,
  dui: { type: String, required: true, unique: true, index: true },
  nit: { type: String, required: false, unique: true, index: true },
  sex: { type: String, required: false },
  civil_status: { type: String, required: false },
  birthday: { type: Date, required: false },
  telephone: { type: String, required: true },
  city: { type: String, required: true },
  address: { type: String, required: true },
  active: { type: Boolean, required: true },
});


employeeSchema.plugin(uniqueValidator);

module.exports = mongoose.model("Employee", employeeSchema);

我總是收到一條錯誤消息，指出角色代碼必須是唯一的。 我使用.set 不正確嗎？ 或者我錯過了什么？ 非常感謝你提前。

Answer 1

解決它改變：

const subRole = Role.schema.clone().set('code', {unique: false}).set('code', `{index : false});`

到

const subRole = Role.schema.clone().set('excludeIndexes', true);

刪除了員工的集合，以便使用正確的索引重新創建它，這樣就成功了。

在 github 的貓鼬問題之一中提到了它： https://github.com/Automattic/mongoose/issues/11547

據說他們實施了一些關於它的東西，但我沒有得到它。 以上雖然對我有用。