阻止 Mongoose 为子文档数组项创建 _id 属性 [英] Stop Mongoose from creating _id property for sub-document array items

问题描述

如果您有子文档数组，Mongoose 会自动为每个数组创建 id.示例:

If you have subdocument arrays, Mongoose automatically creates ids for each one. Example:

{
    _id: "mainId"
    subDocArray: [
      {
        _id: "unwantedId",
        field: "value"
      },
      {
        _id: "unwantedId",
        field: "value"
      }
    ]
}

有没有办法告诉 Mongoose 不要为数组中的对象创建 id?

Is there a way to tell Mongoose to not create ids for objects within an array?

推荐答案

很简单，你可以在 subschema 中定义:

It's simple, you can define this in the subschema :

var mongoose = require("mongoose");

var subSchema = mongoose.Schema({
    // your subschema content
}, { _id : false });

var schema = mongoose.Schema({
    // schema content
    subSchemaCollection : [subSchema]
});

var model = mongoose.model('tablename', schema);

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