我使用mongoose来定义2个模式。
employee.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role.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);

我遇到的问题是，每当我插入一个角色代码重复的文档时，都会因为唯一验证而得到一个错误。

roleSchema.plugin(uniqueValidator);

js中，我还尝试使用.set来更改role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);

我总是得到一个错误，说角色代码需要是唯一的。我是不是用错了.set？还是我遗漏了什么？提前非常感谢。